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Otso Waheela C 1x GRX 600 12-Speed

Otso Waheela C 1x GRX 600 12-Speed
  • Color: Gloss Goldenrod / Yellow
  • Color: Matte Slate / Gray
Color: Gloss Goldenrod / Yellow
Size: Select size
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Sorry, we don't currently have this item in stock. We're happy to special order based on availability. Please contact us for details. or 509 996-3645


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 SizeSmallMediumLargeX-Large
Effective Top Tube (mm) 546 560 583 605
Nominal Head Tube Angle (mm) 71° 71.5° 71.5° 71.5°
Tuning Chip-Induced Head/Seat Tube Angle Change ±0.2° ±0.2° ±0.2° ±0.2°
Head Tube Length (mm) 94 107 149 191
Nominal Seat Tube Angle 72.5° 72.5° 72.5° 72.5°
Seat Tube Length (mm) 475 510 540 570
Bottom Bracket Drop (mm) 68-72 68-72 68-72 68-72
Chainstay Length (mm) 420-440 420-440 420-440 420-440
Wheelbase (mm) 1008 - 1028 1015-1035 1039-1059 1062-1082
Trail (mm) 71 68 68 68
Fork Offset (mm) 47 47 47 47
Rigid Fork Axle to Crown Length (mm) 420 420 420 420
Stack (mm) 541 555 595 635
Reach (mm) 375 385 395 405
Standover (mm) 737 765 798 831
Frame SizeRecommended Rider Height (cm)Recommended Rider Height (in)Recommended Rider Inseam (cm)Recommended Rider Inseam (in)
Small 157 - 170 5'2"-5'7" 73 - 81 29"-32"
Medium 170 - 180 5'7"-5'11" 78 - 84 30"-34"
Large 180 - 190 5'11"-6'3" 81 - 89 33"-35"
X-Large 190 - 198 6'3"-6'6" 86 - 94 34"-37"


Frame Carbon with Tuning Chip® dropout system
Fork Lithic full carbon fork, 12mm thru-axle
Wheels SUNRingle Duroc G30 Expert 700c, 26mm inner width, 100x12 thru-axle front, 142x12 thru-axle rear
Tires Schwalbe G-One Allround 700x45, black
Bottom Bracket Shimano english threaded BSA, Ø68mm
Crankset Shimano GRX 600, 40T Chainring: 170mm S | 172.5mm M/L | 175mm XL
Shifters Shimano GRX 600 mechanical, 13-speed
Rear Derailleur Shimano GRX 822 1x, 12-speed
Cassette/Freewheel Shimano SLX M7100, 11-51T, 12-speed
Chain Shimano 12-speed
Brakes Shimano RX400 Hydraulic
Handlebars Lithic Corundum aluminum compact drop with 16° flare: 40cm S | 42cm M | 44cm L | 46cm XL
Tape/Grips Wolf Tooth Supple Lite, black
Stem 6061 aluminum: 60mm S | 70mm M | 80mm L | 90mm XL
Headset Wolf Tooth Performance Headset, black
Seatpost Aluminum, 30.9 x 350mm, 20mm offset
Saddle WTB Volt 142mm
Pedals Sold Separately

* Subject to change without notice.