Road

The Avail Advanced is that riding buddy who’s up for any adventure on the road—from solo backroad explorations to after-work shop rides to all-day epic rides with friends. Designed for performance and capable on any surface, this road warrior is ready to take you as far as you can go, which is always farther than you think. Lightweight Advantage - The Avail Advanced delivers lightweight efficiency, thanks to an all-new Advanced-grade composite frame and an Advanced-grade composite fork, which boosts your climbing abilities and makes you virtually uncatchable over long distances. Superior Compliance - Ride longer without riding harder, with the reengineered frame and fork, optimized for the smoothest, most efficient riding experience. The innovative Liv Contact D-Fuse handlebar and D-Fuse seatpost absorb more road vibrations than round-shaped tubing, without sacrificing efficiency on corners and climbs. Maximum Control - The Liv Contact D-Fuse handlebar features an ergonomic shape and 8-degree flare drop, for total control on those sunrise-to-sunset rides. Wide, alloy rims are designed for high-volume tubeless tires (up to 38mm), providing predictable handling and stability from asphalt to pavé.

The avail advanced is that riding buddy who’s up for any adventure on the road—from solo backroad explorations to after-work shop rides to all-day epic rides with friends. designed for performance and capable on any surface, this road warrior is ready to take you as far as you can go, which is always farther than you think. Lightweight Advantage The Avail Advanced delivers lightweight efficiency, thanks to an all-new Advanced-grade composite frame and an Advanced-grade composite fork, which boosts your climbing abilities and makes you virtually uncatchable over long distances. SUPERIOR COMPLIANCE - Ride longer without riding harder, with the reengineered frame and fork, optimized for the smoothest, most efficient riding experience. The innovative Liv Contact D-Fuse handlebar and D-Fuse seatpost absorb more road vibrations than round-shaped tubing, without sacrificing efficiency on corners and climbs. MAXIMUM CONTROL - The Liv Contact D-Fuse handlebar features an ergonomic shape and 8-degree flare drop, for total control on those sunrise-to-sunset rides. Wide, alloy rims are designed for high-volume tubeless tires (up to 38mm), providing predictable handling and stability from asphalt to pavé. ADVANCED COMPOSITE TECHNOLOGY - Liv’s High-Performance Grade raw carbon material is used to produce this frameset in our own composite factory. Using state-of-the-art materials and manufacturing techniques, Liv’s Advanced-Grade Composite frames are designed to offer lightweight and stiffness with optimal compliance. COMPACT ROAD DESIGN - When introduced by Giant in 1990s, Compact Road revolutionized the look and feel of high-performance road bikes forever. A downward sloping toptube (from the headtube to the seattube) creates smaller front and rear triangles for a lighter, stiffer bike. It also makes it easier for riders of all sizes to have a perfect fit. D-FUSE SEATPOST - The proprietary "D" shaped composite seatpost damps vibration, resulting in a smooth, compliant ride. OVERDRIVE - Designed to provide precise front-end steering performance, this fork steerer tube technology uses oversized headset bearings (1 1/4" lower and 1 1/8" upper for road, 1 1/2" lower and 1 1/8" upper for mountain) and tapered steerer tube work in conjunction to provide optimal steering stiffness. TUBELESS SYSTEM - Engineered with proprietary Dynamic Balanced Lacing technology, this tubeless-ready composite WheelSystem delivers superior efficiency, pinpoint control and comfort.

Break out of the box and expand your road riding adventures. From smooth pavement to bumpy backroads, this ultra-capable road bike has built-in compliance and high-volume tires, so you can ride any road with confidence and control. Frame is specifically engineered to produce a balanced, all-rounder feel that blends confident rider positioning with agile cornering and acceleration. Innovative D-Fuse seatpost reduces road shocks and vibrations, and a Giant WheelSystem lets you run tubeless tires up to 38mm for a smoother ride quality and reduced risk of flats. Seamless disc brake integration, including flat mounts and 12mm front and rear thru-axles, produces more consistent braking power for better control, even in wet weather and on rough roads.

Some roads are smooth, others are rough. This smooth-riding all-rounder handles it all, taking you from the main route to more adventurous options with confidence and control. Key Performance Factors Balanced road geometry Frame is specifically engineered to produce a balanced, all-rounder feel that blends confident rider positioning with agile cornering and acceleration. Smooth ride quality Innovative D-Fuse seatpost reduces road shocks and vibrations, and a Giant WheelSystem lets you run tubeless tires up to 38mm for a smoother ride quality and reduced risk of flats. Total control Seamless disc brake integration, including flat mounts and 12mm front and rear thru-axles, produces more consistent braking power for better control, even in wet weather and on rough roads.

Some roads are smooth, others are rough. This smooth-riding all-rounder handles it all, taking you from the main route to more adventurous options with confidence and control. Key Performance Factors: Balanced road geometry Frame is specifically engineered to produce a balanced, all-rounder feel that blends confident rider positioning with agile cornering and acceleration. Smooth ride quality Innovative D-Fuse seatpost reduces road shocks and vibrations, and a Giant Wheel System lets you run tubeless tires up to 38mm for a smoother ride quality and reduced risk of flats. Total control Seamless disc brake integration, including flat mounts and 12mm front and rear thru-axles, produces more consistent braking power for better control, even in wet weather and on rough roads.

With effortless efficiency and quiet compliance, this lightweight endurance road machine helps you ride stronger and longer. The composite frame and purpose-built components smooth out rough roads and minimize fatigue. Key Performance Factors Functional simplicity Free of cumbersome gimmickry, the frameset is one of the lightest in its category. With a perfect balance of high-performance reactivity and all-day comfort, it offers a “less is more” experience for modern endurance road riding. Engineered compliance Advanced-grade composite frame and fork are specifically engineered for endurance road riding, delivering a smooth and efficient ride quality that minimizes fatigue on long rides. The new D-Fuse components work together to further absorb road shocks and vibrations. Total control New Contact D-Fuse handlebar features ergonomic shaping and an 8-degree flare for comfort and control on all-day rides. Wide, alloy rims are optimized for high-volume tubeless tires (up to 38mm), providing predictable handling and stability from asphalt to cobbles.

Maximize your watts during sprints, breakaways and solo attacks. This aero road machine is built to give you a real advantage against the wind. Because small gains lead to big wins. KEY PERFORMANCE FACTORS: Integrated aerodynamics AeroSystem Shaping, a result of CFD analysis and dynamic wind-tunnel testing, optimizes aerodynamic performance at every yaw angle. The truncated ellipse airfoil tube shapes and all-new Contact SL Aero cockpit produce superior aero performance. Race-winning efficiency Advanced-grade composite frame and hybrid alloy/composite fork deliver optimal stiffness and weight savings. The result is an even greater stiffness-to-weight advantage. Easier adjustability All-new cable routing through the handlebar and frame makes it quicker and easier to adjust or change cockpit components and fine-tune performance and riding position. HIGHLIGHTS OF THE PROPEL ADVANCED AERO BIKE Engineered with AeroSystem Shaping technology and Advanced-grade composite material, the all-new Propel Advanced combines proven aero performance and one of the lightest framesets in its category. New cable routing through the stem and head tube makes it quick and easy to adjust and dial in rider positioning. The lightweight, easily adjustable Vector composite seatpost further minimizes drag. AEROSYSTEM SHAPING Through CFD (Computational Fluid Dynamics) and wind-tunnel data, engineers optimize each tube shape to deliver superior aerodynamic performance. ADVANCED COMPOSITE High-performance grade raw carbon material is used to produce this custom material in our own composite factory with a high stiffness-to-weight ratio. AERO TUBELESS WHEELSYSTEM Engineered with proprietary Dynamic Balanced Lacing technology, this composite aero WheelSystem and tubeless tires deliver superior efficiency, pinpoint control, and superior aerodynamics. OVERDRIVE AERO Found inside the head tube of the all-new Propel range, the D-shaped fork steerer tube and corresponding spacers provide an extremely aerodynamic, easier-to-service system of internally routed brake and derailleur cables. FULL COMPOSITE FORK D-shaped steerer tube and fork legs are constructed entirely from Giant’s Advanced-grade composite for light weight and superior handling. POWERCORE A massively oversized bottom bracket area features a fully integrated 86.5mm wide design. Asymmetric chainstays provide additional stiffness on the drive-side and stability on the non-drive-side. VECTOR SEATPOST This full-composite, lightweight and aerodynamic seatpost is engineered specifically for performance road riding. NEW CABLE ROUTING Frame and handlebar feature unique cable porting for a sleek, non-cluttered appearance and easier adjustability. DISC-BRAKE INTEGRATION The frame and fork are engineered specifically for flat-mount disc brakes, including front and rear 12mm thru-axles for reliable braking performance in all weather and road conditions. AERO HANDLEBAR/STEM Aero handlebar and stem are designed to reduce overall drag while minimizing weight. AERO BOTTLE CAGES Custom-engineered down tube and seat tube-specific water bottle cages help minimize overall aerodynamic drag.

Ride roads, gravel or dirt with this versatile aluminum all-rounder. A composite fork gives it a smooth ride, and a flip chip lets you adjust wheelbase and tire clearance. Key Performance Factors: Confident handling Frame is designed with endurance positioning and shorter chainstays for precise handling, agility and control. A longer reach, shorter stem and lower bottom bracket drop improves stability on rugged terrain. Tuned compliance Dropped seatstays with thin tubing absorb road shocks and vibrations. The D-Fuse handlebar and seatpost work as a system to add compliance without sacrificing stiffness while cornering, sprinting or climbing. Adaptable to the terrain A flip chip on the rear dropout adjusts the wheelbase: short for quicker handling and acceleration, or long for improved stability at speed. The long setting allows for larger diameter tires up to 53mm. You can choose the included D-Fuse seatpost for maximum compliance, or switch to a 30.9mm round or dropper post.

GRAVEL CRUSHER For those who like their gravel riding fast and free, this lightweight composite flyer lets you choose your objective: Pin on a number and go for the win, or chart a weekend adventure and discover how far you can go. With its composite frame, adjustable wheelbase, and internal storage to carry your essentials, the Revolt Advanced is ready for anything. FAST AND VERSATILE An Advanced-grade composite frame and fork combine for lightweight efficiency and smooth control. A two-position flip chip on the rear dropout lets you adjust the wheelbase: short for quicker handling, or long for added tire clearance (up to 53mm) and improved stability. You can use the included D-Fuse seatpost* for more flex and compliance, or switch to a traditional 30.9mm round seatpost or dropper post. TUNED COMPLIANCE Dropped seatstays with small-diameter tubing absorb road shocks and vibrations on all types of gravel. The Contact SL XR D-Fuse alloy handlebar and carbon D-Fuse seatpost help smooth out rough tracks, improving control and minimizing fatigue over long distances. SMART INTEGRATION Internally routed cables offer clean, uncluttered cockpit aesthetics and improved aero performance. An easily accessed storage compartment inside the top tube lets you securely carry tools, snacks and other essentials. And additional integrated mounts on the top tube, fork and rear dropout make it easy to modify with additional packs or fenders. All-new, molded, chainstay and down tube protection help defend the frame against impacts and quell nois

Fast gravel, rough gravel, pavement or dirt. However you choose to roll, this bike does it all. A new composite frameset and adjustable wheelbase make it more capable than ever. With a lightweight Advanced-grade composite frame that's engineered for compliance, Revolt Advanced lets you push your limits on variable terrain. A composite fork eats up bumps, and the D-Fuse seatpost and handlebar absorb shocks and vibrations. A flip chip on the rear dropout adjusts wheelbase and tire clearance, and you can choose the included D-Fuse seatpost for maximum compliance or a 30.9mm round or dropper post. Details including a smart mount system for racks and accessories give you a head start on any gravel riding mission.

GRAVEL CRUSHER Now lighter, smoother and more adaptable to variable conditions and terrain, this reengineered composite gravel bike combines ultra-efficient performance with next-level handling and control. Key Performance Factors: FAST AND VERSATILE Lightweight Advanced-grade composite frame and Advanced SL composite fork combine for race-winning efficiency and smooth control. A two-position flip chip on the rear dropout lets you adjust the wheelbase: short for quicker handling, or long for added tire clearance (up to 53mm) and improved stability. You can use the included D-Fuse seatpost for more flex and compliance, or switch to a traditional 30.9mm round seatpost or dropper post. TUNED COMPLIANCE Dropped seatstays with small-diameter tubing absorb road shocks and vibrations on all types of gravel. The Contact SLR XR D-Fuse carbon handlebar and D-Fuse SLR seatpost help smooth out rough tracks, improving control and minimizing fatigue over long distances. SMART INTEGRATION Internally routed cables offer clean, uncluttered cockpit aesthetics and improved aero performance. An easily accessed storage compartment inside the top tube lets you securely carry tools, snacks, and other essentials. And additional integrated mounts on the top tube, fork, and rear dropout make it easy to modify with additional packs or fenders. All-new, molded chainstay and down tube protection help defend the frame against impacts and quell noise.

Superlight, ultra-efficient and rides like a dream. This well-rounded race bike blends industry-leading composite frame engineering with fully integrated components to help you climb, corner and descend with astonishing speed and sublime road handling. SYSTEM OPTIMIZATION The frameset, wheels, cockpit and other parts are engineered, developed and tested together to perform as a system. The all-new OverDrive Aero steerer tube technology is combined with a Contact SL AeroLight stem and Contact SL handlebar to incorporate internal cable routing that integrates the top cap, cables and spacers in a more aerodynamic, user-friendly setup. WINNING EFFICIENCY Featuring a greater stiffness-to-weight ratio than the previous generation, along with new aero tube shaping and a lighter overall weight, this uncompromising race bike delivers explosive acceleration and unyielding pedaling stiffness. The result is race-winning performance in the moments that count. INTEGRATED AERODYNAMICS All tube shapes are engineered and developed using Computational Fluid Dynamics (CFD) modeling and wind-tunnel testing. From the truncated ellipse shape of frameset tubing to a new cockpit design and component integration, it all adds up to a more streamlined profile that improves overall aero performance compared to the previous generation.

HAUL ASS, NOT CARGO In 2019, Áspero took the gravel world by storm, heralding a “new era of speed in gravel.” Fun, but flat out. The new Áspero remains true to its original brief, but with some improvements: a threaded BB shell, neater cable routing, and a UDH-compatible derailleur hanger for those who want to use SRAM’s Transmission drivetrains. And it’s more aero, of course. In the case of Áspero, aerodynamic performance is less about pure speed as a result of drag reduction, and more about conservation of energy. After a big day in a headwind, the three watts saved over the previous Aspero might add up to one less energy gel your stomach has to digest—WORTH IT. In addition to the drag reduction, we also dropped the seat stays to give a bit more compliance out back, and reduced front-end stiffness slightly to make the last hours of a long race less painful. Between those dropped seat stays, we added in a bit more clearance for mud, too, taking what we learned from R5-CX (and the Unbound mudfest in 2023). It’s a lot of seemingly small improvements, but they add up to a lot. The result is a bike that feels a lot like the original Áspero, but is faster, more comfortable, and more versatile. THREADED BOTTOM BRACKET Aspero uses the asymmetrical T47a threaded bottom bracket we pioneered on R5-CX. It’s a simple, rider-serviceable interface that allows us to deliver the benefits of BBRight in a more user-friendly form. UNIVERSAL DERAILLEUR HANGAR We used SRAM’s Universal Derailleur Hanger (UDH) standard on the new Aspero. It’s ideal if you want to live your best ‘business in the front, party in the back’ life with one of SRAM’s Transmission drivetrains today, and ensures compatibility for future drivetrain developments. INTERNAL CABLE ROUTING Aspero shares the same bearing dimensions as R5, Soloist, R5-CX, and Caledonia, which means you can use any combination of bearing caps and stems. Want a super-racy, fully-internal look? Grab the ST31 and HB13 from R5.

HAUL ASS, NOT CARGO A new breed of rider is emerging-one who loves the freedom and exploration that gravel culture was founded upon but who has a hunger to ride hard, to go all out, and to explore not just geography but personal limits. This frontier requires a new kind of gravel machine, one engineered not to roam the trails, but to race them. For these athletes, we engineered Aspero for pure, unapologetic speed, ready to take down finish lines, KOMs, PRs, and FKTs. A bike built without limits, for the riders looking to test them. It's stiff, Classics-racing stiff, and performs like you'd want a road bike to perform off-road. We think that makes sense, and it's what we were trying to do when we were stuffing bigger tires into our existing frames and swapping in aftermarket forks to get a 40mm tire up front. The flip-chip in the fork-we call it the Trail Mixer-keeps the trail measurement consistent whether you choose 700c or 650b tires. This maintains the bike's personality and handling characteristics when you switch from mid-fats to full-fat. There are as many different ways to do gravel as there are gravel bikes these days, but if you're toeing the start line, looking to stay with the lead group, and contend for the victory, Aspero is the bike to get you there.

HAUL ASS, NOT CARGO In 2019, Áspero took the gravel world by storm, heralding a “new era of speed in gravel.” Fun, but flat out. The new Áspero remains true to its original brief, but with some improvements: a threaded BB shell, neater cable routing, and a UDH-compatible derailleur hanger for those who want to use SRAM’s Transmission drivetrains. And it’s more aero, of course. In the case of Áspero, aerodynamic performance is less about pure speed as a result of drag reduction, and more about conservation of energy. After a big day in a headwind, the three watts saved over the previous Aspero might add up to one less energy gel your stomach has to digest—WORTH IT. In addition to the drag reduction, we also dropped the seat stays to give a bit more compliance out back, and reduced front-end stiffness slightly to make the last hours of a long race less painful. Between those dropped seat stays, we added in a bit more clearance for mud, too, taking what we learned from R5-CX (and the Unbound mudfest in 2023). It’s a lot of seemingly small improvements, but they add up to a lot. The result is a bike that feels a lot like the original Áspero, but is faster, more comfortable, and more versatile. THREADED BOTTOM BRACKET Aspero uses the asymmetrical T47a threaded bottom bracket we pioneered on R5-CX. It’s a simple, rider-serviceable interface that allows us to deliver the benefits of BBRight in a more user-friendly form. UNIVERSAL DERAILLEUR HANGAR We used SRAM’s Universal Derailleur Hanger (UDH) standard on the new Aspero. It’s ideal if you want to live your best ‘business in the front, party in the back’ life with one of SRAM’s Transmission drivetrains today, and ensures compatibility for future drivetrain developments. INTERNAL CABLE ROUTING Aspero shares the same bearing dimensions as R5, Soloist, R5-CX, and Caledonia, which means you can use any combination of bearing caps and stems. Want a super-racy, fully-internal look? Grab the ST31 and HB13 from R5.

Flat Out. That's how Aspero debuted under the characters of the Wednesday Night Rough Club two years ago, and that's how it's stayed. And because at Cervelo we know that flat out doesn't stay flat out for long without a little help from science, we've come back from the drawing board with a new Aspero. A faster Aspero, a lighter Aspero, and—dare we say it—an even better-looking Aspero. Our engineers like to say, "If it looks fast, it probably is"—but there's some truth to it, and Aspero-5 looks fast standing still. No cables in the wind, tubes derived from our library of aerodynamically proven shapes, and just a hint of a cut out in the seat tube to squeak out just a bit more tire clearance, add up to a bike that proves the adage. Lightweight Speed Some might say aero doesn't matter on a gravel bike, but if you've battled a headwind across an open prairie, the thirty-two grams of drag you'll save with the Aspero-5 come as a welcome respite. Most gravel racing is done without the benefit of a World Tour peloton—or World Tour tactics—and when it's your nose in the wind all day, it's nice to know your bike's shouldering a bit of the load. Two-Position Adjustment "Trail", or front wheel response to rider input, is the most critical factor in high-velocity handling. The ability to adjust trail with the two-position "Trail Mixer" to compensate for the extreme range of tire sizes ensures a uniform ride experience. Multiple Configurations We engineered the bike to fit most 700x42 or 650x49 tire/wheel combos, comfortably. Of course, there are variables—rim width, tire casing/tread depth—which will affect final clearance. IMPORTANT NOTE: We always recommend there to be 4mm of clearance around whichever tire/wheel combo is installed on the bike.

Caledonia doesn't fit in a box nicely, and we like it that way. It was conceived on our Thursday night rides-routes that often play fast and loose with 'road ride.' Modern road riders are looking for bikes to handle long-distance, high pace, no limits, and offer maximum fun - the Caledonia delivers performance, comfort, and speed. Oh, and you can fit a 34mm tire in there. Or 31mm with fenders. - Removable FDM Our bolt-on front derailleur mount is made from high-strength aluminum alloy and attaches to the frame with two countersunk screws. This allows for easy replacement in the event of damage but also enables you to adapt to new standards as they become available or remove the front derailleur mount completely if you choose a 1x system. - Integrated Accessory Mounts Integrated mounts enable the use of fenders, lights, and computers without compromising the aerodynamics or structure of your bike. The built-in mount systems provide a simple and clean-looking solution.

A BIKE FOR THE WAY RIDERS RIDE Caledonia doesn't fit in a box nicely, and we like it that way. It was conceived on our Thursday night rides-routes that often play fast and loose with 'road ride.' As we tried to stuff bigger tires into our R5s and streamline our Asperos, a new kind of bike was born. When we design a bike, we start with our library of tube shapes. These shapes are tubes we've used on other models that we know to have various qualities-aerodynamic, stiff, ultralight, etc.-and they help get us to the refinement stage on a bike more quickly. In the case of Caledonia, we wanted durability, lightweight, and aerodynamics to be in balance and selected a package that achieved the performance demands of this kind of race bike. Caledonia uses a standard round bar, stem, and seat post, giving riders the option to build their ultimate ride without compromise. Integrated accessory mounts and hidden fender mounts keep the bike's refined lines so you can ride with lights and computers in a downpour and still look fast. Because we all know if it looks fast, it probably is. Rather than designing multiple versions of the bike with various fit profiles (R5, R-Series, etc.) like we've done in the past, we designed a system that enables a broad range of fits on a single bike while maintaining the aesthetic and functional cleanliness we demand. Modern road riders are looking for bikes to handle long-distance, high pace, no limits, and offer maximum fun. By placing lower modulus carbon in key areas to mitigate the brittleness of hi-mod fiber-the Caledonia delivers performance, comfort, and speed. Oh, and you can fit a 34mm tire in there. Or 31mm with fenders.

The S5 is a sport-wide benchmark for speed and aerodynamic efficiency—with the race results to back it up. From Wout van Aert winning the Green Jersey by the biggest margin of victory in modern history, to Simon Yates riding himself into the maglia rosa, S5’s iconic V-stem and bayonet fork are a fixture at the front of the professional peloton. The new S5 builds on that legacy of speed by getting even faster. The new bike is over 6 Watts faster than its predecessor, 124 grams lighter, and retains the handling, poise, and stability that riders everywhere love. The biggest changes are at the front of the bike, where the most significant aerodynamic performance comes from. The fork legs and head tube got quite a bit deeper, and the all-new, one-piece handlebar/stem builds on the original V-stem concept—and gets even faster. Cervélo and Reserve co-developed the new Reserve 57|64 Turbulent Aero wheels specifically for use in the S5 frame, completing the aerodynamic system. Aero Aero Aero The new S5 is 6.3 Watts faster than its predecessor. These gains are realized primarily at the front end of the bike, but the integration of the asymmetric profiles of the seat tube and rear wheel are a significant source as well. Cervélo has long been the aerodynamic leader in the peloton, and we’re confident that the new S5 is at least 5 Watts faster than the bikes of our competitors. One-Piece Handlebar/Stem HB19 uses our “Plus-Four” concept, meaning the dimension at the hoods is 4cm narrower than in the drops (e.g. 38cm/42cm). This approach helps riders maintain a more aero body position while their hands are on the hoods, and provides stability in the drops for descending and sprinting. All bar sizes are UCI-legal, even in light of the most recent regulations change. Not just faster. Lighter, too. Despite an increase in surface area, the new S5 is 124 grams lighter than its predecessor. While the increase in fork and head tube depth added weight, we optimized the layup and hardware to make the system lighter. Reserve 57|64 Designed for S5: The new Reserve 57|64 wheelset was co-developed by Reserve and Cervélo, and designed for use in the new S5. The rear wheel’s asymmetry matches the seat tube, ensuring air flows smoothly over both. The new wheelset is 3 Watts faster than the 52|63 wheels, and weighs the same.

Our engineers like to joke that, "if it looks fast, it probably is." But there's some truth to that, and Áspero-5 looks fast standing still. No cables in the wind, tube shapes from our aerodynamically-proven library, and a hint of a cut-out in the seat tube, all add up to a bike that proves the adage. - Lightweight Speed Some might say aero doesn't matter on a gravel bike, but if you've battled a headwind across an open prairie, the thirty-two grams of drag you'll save with the Áspero-5 come as a welcome respite. Most gravel racing is done without the benefit of a World Tour peloton—or World Tour tactics—and when it's your nose in the wind all day, it's nice to know your bike's shouldering a bit of the load. - Two-Position Adjustment Trail—front-wheel response to rider input—is the most critical factor in high-velocity handling. Flipping the two-position "Trail Mixer" to compensate for the difference in circumference between a 650b and 700c tire maintains consistent handling by maintaining consistent trail figures. - Multiple Configurations We designed Aspero with clearance for up to 700c x 40mm tires or 650b x 49mm tires. Of course, there are variables—rim width, tire casing, and tread depth—which will affect final clearance. We (and the International Organization for Standardization, or ISO), always recommend 4mm of clearance between the tire and frame. **New Shimano road (not gravel) 12-speed front derailleurs reduce tire clearance in the rear of the frame to 700 x 38c or 650b x 45c. - SRAM Integrated Power Red and Force build include Quarq Zero power meters integrated into the crank. The integration of a power meter results in better stiffness, lighter weight, and improved accuracy over aftermarket solutions—and the DZero delivers power measurement accurate to +/- 1.5%, even in variable temperatures.