This was one of the fastest gravel bikes we’ve built. It’s a Custom Serrai Carbon Fiber gravel bike built with Sram Red eTap AXS components and Enve wheels and cockpit. The bike was built for a 6’5″ rider with 195mm cranks paired with a Sram Red AXS power meter.
Frame: Serrai Carbon Fiber Gravel bike
This bike frame was built from the ground up, custom for the rider after he went through a full Ultimate Bike fit with Lennard Zinn and Jason Williams at the Specialized Performance Center in Boulder, Colorado. Each tube of this frame has a custom layup to optimize the weight and ride quality for the rider. We have the ability to build custom carbon fiber bikes for riders well over 300lbs. There is no mainstream bike brand making a carbon fiber frame that will work for a rider that big. The craftsmanship of this frame is 2nd to none in the world and the bike weighed in at less than 18lbs for a 6’6″ rider.
Wheels: Enve G23 700C gravel wheelset
Beyond the range of your trail bike and the capabilities of your road bike there is terrain littered with a contradicting challenge—mountain bike toughness and road machine efficiency. It requires a wheel with the ride quality to make long days on the road invigorating and inspire absolute confidence everywhere else. Enter the G23.
LIGHTNESS AND WIDTH
We set out to create a wheel that would maximize speed, fun and reliability while riding out-there terrain. At only 330 grams, the G23 is the lightest 700c tubeless rim ENVE produces. This makes for instant acceleration and endless ascending capability. The wide and shallow rim geometry gives a compliant ride quality over chatter, and allows for use with a wide range of tire sizes. Big tires = big grip, which gives the G23 confidence-inspiring descending capability over its road-oriented siblings.
TIRE SAVING TECH
With an inner rim width of 23mm, the G23 is designed to be paired with gravel treads between 35 and 45mm. Tires in these widths provide control and traction that optimize the experience of gravel riding endeavors. Many tires in this spec however do not offer much by way of pinch-flat protection. The forward-looking G23 uses our Wide Hookless Bead anti-flat technology to combat ride-ending pothole encounters. Wide beads provide a larger, more forgiving surface during bottom outs, protecting the tire from the dreaded pinch-flat. This technology means you can ride the tire pressures you want, confidently, without limitations.
TUBELESS DOMINANCE
G series wheels are intended for tubeless applications and feature a molded bead-lock to ensure that your tires will remain secure and sealed to the rim over even the roughest terrain. Despite ‘minimum PSI’ markings to the contrary, many riders are experimenting with pressure setting in the 20s, thanks to the bead-lock and Wide Hookless Bead technologies.
Simply put, the G23 exceeds the performance and ride quality demands of serious mixed surface cyclists. Armed against pinch flats, with a tough, relentless but refined character, it is the king of the road, path and trail.
Cockpit: Enve carbon fiber seatpost, stem, and handlebar
We used Enve Carbon Fiber components for the seatpost, stem, and handlebar on this bike to keep the weight down and optimize the vibration damping for the rough gravel roads. Not only are these components made with an extremely high level of quality and craftsmanship, the look really nice, especially with the matte black frame. This bike’s aesthetics work from front to back and all parts look like they were made for each other.
Drivetrain: Sram Red eTap AXS
The shifting quality and ease of use with Sram Red eTap AXS components is unparalleled in our opinion. The flat top chain rolls smoothly and quietly and each shift is a sound of perfection. We paired these components with our Driveline 195mm cranks to work best with the 6’6″ rider’s leg length. We firmly believe that every rider’s cranks should be proportional to their leg length. This creates and optimal pedaling stroke and increases efficiency while also decreasing fatigue and joint pain. We also make very short cranks for riders who need shorter than 165mm.
