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Otso Waheela C GRX 800

Otso Waheela C GRX 800
  • Color: Gloss Goldenrod/Yellow
  • Color: Matte Slate/Gray
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The Waheela C is a carbon-framed drop bar bike with adjustable geometry, unrivaled ride quality, and enormous tire clearance for 700c x 54mm, 650b x 54mm, or 29" x 2.1" tires. It has extra frame and fork mounting points for bottles and racks, easily accessible internal cable routing options, compatibility for 1x or 2x electronic or mechanical drivetrains, and the ability to run a dropper post. No matter the road ahead (or under the tire), the Waheela C is ready.

Gravel comes in all shapes and sizes, from the packed limestone of Southeast Minnesota to the chunky roads of the Flint Hills of Kansas. The Waheela C is equipped with tire clearance to handle the terrain of your next race. Where most gravel bikes can fit 650b x 50mm but only 40mm with bigger wheels, the Waheela C keeps on rolling, with space for 700c x 54mm tires. It'll run 700c x 35mm when the roads are tacky and tidy, 700c x 42mm when there's a bit more uncertainty, 700c x 54mm when the gravel road turns to ATV trails, and anything in between. The Waheela C can also fit 29" x 2.1", 27.5" x 2.1", or 650b x 54mm if 700c isn't really your thing. In short, the Waheela C is ready for the road ahead.

Like all Otso bikes, the Waheela C sports our patented Tuning Chip rear dropout system, which allows you to change the length of your wheelbase and the height of your bottom bracket. Put the Tuning Chip in the back position to get the stability and comfort of a longer wheelbase for a full day of riding gravel. Switch to the front position to get the agile handling and responsiveness required by your next CX race. And the middle position? That's the best of both worlds. The adjustable geometry of the Waheela C allows you to ride any road or any trail without needing to switch bikes.

Our proprietary Waheela geometry was developed by our engineers for stability, confidence, and comfort on rough terrain. Where many gravel bikes put extra weight on the front wheel, the Waheela C centers the rider over both wheels. This makes for a more stable ride while allowing the compliant rear triangle to come into play and absorb the bumps of a gravel road. Meanwhile, the lightweight EPS molded carbon frame adds responsiveness and readiness for a sprint up that next hill. After a long day on the saddle, you'll find yourself adding a healthy amount of miles to tomorrow's ride.

Waheela C features fork bottle bosses, extra down tube mounting points (6 total), as well as top tube gas tank mounting points. Numerous braze-ons allow Waheela C to accommodate water bottles, fenders, racks, frame bags, and more.

Internal brake and shifter routing with sleeves, carbon access door under the bottom bracket for easier routing, front and rear thru-axle, and threaded bottom bracket for reliable, easy service. This also allows you to run that dropper post you've been dreaming about.

Waheela C is 1x and 2x compatible with mechanical and electronic drivetrains. It's also fully compatible with both Shimano Di2 and SRAM eTap AXS, in case you don't want to take advantage of internal routing options.

Designed by the Otso engineering team, Waheela C frames are manufactured in one of the premier carbon fiber factories in Taiwan and come with a 5-year limited warranty. All bikes are inspected and assembled at our headquarters in Minneapolis, MN USA.

Frame SizeSMLXL
Effective top tube546mm 560mm583mm605mm
Nominal head tube angle71° 71.5°71.5°71.5°
Tuning Chip induced head/seat tube angle change±0.2° ±0.2°±0.2°±0.2°
Head tube length94mm 107mm149mm191mm
Nominal seat tube angle72.5° 72.5°72.5°72.5°
Seat tube length475mm 510mm540mm570mm
Bottom bracket drop68-72mm 68-72mm68-72mm68-72mm
Chainstay length420-440mm 420-440mm420-440mm420-440mm
Wheelbase1008 - 1028mm 1015-1035mm1039-1059mm1062-1082mm
Trail71mm 68mm68mm68mm
Fork offset47mm 47mm47mm47mm
Rigid fork axle to crown length420mm 420mm420mm420mm
Stack541mm 555mm595mm635mm
Reach375mm 385mm395mm405mm
Standover737mm 765mm798mm831mm
Frame SizeRecommended rider heightRecommended rider inseam
S5'2"-5'7" 29"-32"
M5'6-5'11" 30"-34"
L5'10"-6'3" 33"-35"
XL6'2"-6'6" 34"-37"


Pedals Sold Separately
Fork Lithic Hiili carbon fork with triple mounts, 12mm thru-axle
Stem Aluminum
Chain Shimano HG-X11
Frame Carbon with Tuning Chip® dropout system
Tires Schwalbe G-One Allround 700x40 Black
Brakes Shimano GRX 810 Hydraulic
Saddle WTB Volt Medium, 142mm width
Wheels HED Emporia GA Performance 700c, tubeless ready, 25mm inner width, 100x12 thru-axle front, 142x12 thru-axle rear, centerlock brake interface
Headset Wolf Tooth Performance Headset, ZS44/ZS56
Crankset Shimano GRX 800
Seatpost Race Face Next SL Carbon, 30.9 x 400mm, 0mm offset
Shifters Shimano GRX 800 mechanical, 11 speed
Chainrings 48/31t
Handlebars FSA Carbon K-Wing AGX
Tape/Grips Wolf Tooth Supple Lite Bar Tape
Bottom Bracket Shimano english thread BSA, Ø68mm
Rear Derailleur Shimano GRX 810, 11 speed
Front Derailleur Shimano GRX, braze-on mount
Cassette/Freewheel Shimano HG700, 11-34t, 11 speed

* Subject to change without notice.