GRAVEL PERFORMANCE
The Waheela C is the ultimate all-around gravel race bike. It’s known for its massive tire clearance, adjustable geometry, and surprisingly compliant carbon frame. There are few gravel bikes that can be found on podiums at Unbound, The Mid South, and TransRockies Gravel Royale while also racing Tour Divide, Vermont Super 8, and Arkansas High Country Race. It was designed to meet the performance requirements of its rider and the terrain ahead. With a few tweaks of the build spec, Waheela C can meet the demands of gravel racing and bikepacking races alike.
Call it three bikes in one. Call it a quiver killer. Call it the ultimate all-around gravel race bike.
BUILD YOUR WAHEELA C
Otso bikes are available to purchase here on our website or with our network of Otso dealers. Our Custom Bike Configurator allows you to select most component options on your bike, including drivetrain, wheelset, tires, handlebars, seatpost, anodized accent color option, and more. The Warakin is also available as a frameset if you already have parts ready to go at home. When an order is placed, the Otso team builds the bike based on your custom specs and ships it to you. Home assembly is as simple as putting on the wheels and straightening the handlebars. We’re happy to talk through options to help you build the Warakin that is perfect for you and your riding style.
Otso has a small (but growing!) network of bike shops that sell our bikes. Click the button to the right to see a map of all Otso dealers. If there is not one in your area, you can still build and order any of our bikes right here on our website. Give us a shout at sales@otsocycles.com with any questions.
Giant Tire Clearance
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 terrrain of your next race. 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.
Adjustable Geometry
Like many Otso bikes, the Waheela C sports our patented Tuning Chip rear dropout system, which allows you to change the length of your wheelbase and 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.
Unrivaled Ride Quality
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 in the saddle, you’ll find yourself adding a healthy amount of miles to the next day’s ride.
Internal Routing
The Waheela C frame has routing ports behind the head tube for brake lines, shifter cables, and dropper post routing. Rear brake and rear derailleur routing enters the frame on the non-drive side behind the head tube and exits near the back of the chainstay on their respective sides.
Extra Mounting Points
Waheela C features fork bottle bosses, extra down tube mounting points (six 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.
Details that Matter
Internal brake and shifter routing with sleeves, carbon access door under 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.
Compatible with 1x or 2x
Waheela C is 1x and 2x compatible with mechanical and electronic drivetrains. It’s also fully compatible with both Shimano Di2 and SRAM AXS, in case you don’t want to take advantage of internal routing options.
Quality Assured
Designed by the Otso engineering team, Waheela C frames are manufactured in one of the premiere carbon fiber factories in Taiwan and come with a five-year limited warranty. All bikes are inspected and assembled at our headquarters in Minneapolis, MN USA.
TECHNICAL DETAILS
Build Specs
| 12-Speed GRX 600 1x | 12-Speed GRX 800 1x | Custom Bike Configurator | |
| Frame | Carbon with Tuning Chip® dropout system | Carbon with Tuning Chip® dropout system | Carbon with Tuning Chip® dropout system |
| Fork | Lithic full carbon fork, 12mm thru-axle | Lithic full carbon fork, 12mm thru-axle | Lithic full carbon fork, 12mm thru-axle |
| Headset | Wolf Tooth Performance Headset, black | Wolf Tooth Performance Headset, black | Wolf Tooth (Custom Options) |
| Rear derailleur | Shimano GRX 822 1x, 12-speed | Shimano GRX 822 1x, 12-speed | Custom Options |
| Front derailleur | N/A | N/A | Custom Options |
| Shifters | Shimano GRX 600 mechanical, 12-speed | Shimano GRX 800 mechanical, 12-speed | Custom Options |
| Cassette | Shimano SLX M7100, 11-51T, 12-speed | Shimano SLX M7100, 11-51T, 12-speed | Custom Options |
| Brake calipers | Shimano RX400 Hydraulic | Shimano RX820 Hydraulic | Custom Options |
| Cranks | Shimano GRX 600, 40T Chainring: 170mm S | 170mm M | 172.5mm L | 172.5mm XL | Shimano GRX 800, 40T Chainring: 170mm S | 170mm M | 172.5mm L | 172.5mm XL | Custom Options |
| Bottom bracket | Shimano english threaded BSA, Ø68mm | Shimano english threaded BSA, Ø68mm | English thread BSA, Ø68mm, Custom Options |
| Handlebar | Lithic Aventurine: 40cm S | 42cm M | 46cm XL; Lithic Corundum: 44cm L | FSA Carbon K-Wing AGX: 40cm S | 42cm M | 46cm XL; FSA Carbon K-Force AGX: 44cm L | Custom Options |
| Bar tape | Anti-Slip Gel Bar Tape | Anti-Slip Gel Bar Tape | Custom Options |
| Stem | 6061 aluminum: 60mm S | 70mm M | 80mm L | 90mm XL | 6061 aluminum: 60mm S | 70mm M | 80mm L | 90mm XL | Custom Options |
| Seatpost | Aluminum, 30.9 x 350mm, 20mm offset | FSA SL-K Carbon 30.9 x 400mm, 0mm offset | Custom Options |
| Seatpost clamp | Wolf Tooth 34.9mm, black | Wolf Tooth 34.9mm, black | Wolf Tooth 34.9mm, Custom Options |
| Saddle | WTB Silverado | WTB Silverado | WTB Silverado |
| Wheels | SUNringle Duroc G30 Expert 700c, 26mm inner width, 100x12 thru-axle front, 142x12 thru-axle rear | HED Emporia GA Performance 700, 25mm inner width, 100x12 thru-axle front, 142x12 thru-axle rear | Custom Options |
| Tires | Schwalbe G-One Allround 700x40, black | Schwalbe G-One Allround 700x40, black | Custom Options |
| Chain | Shimano 12-speed | Shimano 12-speed | Custom Options |
| Frame sizes | S, M, L, XL | S, M, L, XL | S, M, L, XL |
| Weight (size M) | 20lbs 8.5oz set up tubeless | 18lbs 11.5oz set up tubeless | Varies |
Frame Specs
| Bottom bracket standard | 68mm BSA threaded |
| Q factor | 146mm with Shimano 105 crankset |
| Maximum chainring size | 2x 53T round; 1x 46T for 45.5-47mm chainline; 1x 48T for 47.5-48.5mm chainline; 1x 50T for 49mm chainline; for oval, reduce the max allowed by 2 teeth |
| Front derailleur type | Braze-On, bottom pull |
| Headset | ZS44/28.6 upper, ZS56 lower |
| Seatpost diameter | Ø30.9mm |
| Seatpost clamp | Ø34.9mm |
| Front/rear hub standard | 100x12mm thru axle / 142x12mm thru axle |
| Front/rear axle | Ø12x125mm front, TP=1.5, TL=15mm / Ø12x180mm rear, TP=1.5, TL=12mm |
| Derailleur hanger | Tuning Chip Right Dropout |
| Rear brake (rotor) | flat mount (160mm) |
| Front brake (rotor) | flat mount (160mm) |
| Fork axle-to-crown | 420mm, suspension corrected up to 40mm travel |
| Fork offset | 47mm |
| Bare frame weight (M) | 1024g |
| Fork weight (Lithic Hiili 420) | 490g |
| Tire clearance (frame) | Clearance for tires up to 54mm wide in 700c or 650b (most 29" x 2.1" tires) at 430/440mm chainstay positions |
| Tire clearance (fork) | Max Clearance 29 x 2.1" (54-622) |
| Frame Bag Dimensions | Small Medium Large X-Large |
| Seatpost Insertion Depth | Small 250mm; Medium 290mm; Large 320mm; X-Large 310mm |
| Max weight (rider + gear) | 275 lbs |
| Max spacer stack under stem | 40mm |
| Max spacer stack above stem | 10mm |
| Max stem bolt torque | 6 Nm |
Geometry
| S | M | L | XL | |
| Recommended rider height | 5'2"-5'7" | 5'7"-5'11" | 5'11"-6'3" | 6'3"-6'6" |
| Recommended rider inseam | 29"-32" | 30"-34" | 33"-35" | 34"-37" |
| Effective top tube | 546mm | 560mm | 583mm | 605mm |
| Nominal head tube angle | 71° | 71.5° | 71.5° | 71.5° |
| Tuning Chip-induced head/seat tube angle change from middle position | ±0.25° | ±0.25° | ±0.25° | ±0.25° |
| Head tube length | 94mm | 107mm | 149mm | 191mm |
| Nominal seat tube angle | 72.5° | 72.5° | 72.5° | 72.5° |
| Seat tube length | 475mm | 510mm | 540mm | 570mm |
| Bottom bracket drop | 68-72mm | 68-72mm | 68-72mm | 68-72mm |
| Chainstay length | 420-440mm | 420-440mm | 420-440mm | 420-440mm |
| Wheelbase | 1008 - 1028mm | 1015-1035mm | 1039-1059mm | 1062-1082mm |
| Trail | 71mm | 68mm | 68mm | 68mm |
| Fork offset | 47mm | 47mm | 47mm | 47mm |
| Rigid fork axle to crown length | 420mm | 420mm | 420mm | 420mm |
| Stack | 541mm | 555mm | 595mm | 635mm |
| Reach | 375mm | 385mm | 395mm | 405mm |
| Standover | 737mm | 765mm | 798mm | 831mm |
Tires & Rims
Racks & Fenders
Compatible Fenders
SKS Speedrocker (for 23 - 42mm tires)
SKS S-Board and S-Blade
SKS Commuter II
Compatible Racks
Axiom - Streamliner 29er DLX Rear Rack (requires Tuning Chip with threaded rack mounts )
Topeak - Uni Super Tourist DX Rear Rack (requires Tuning Chip with threaded rack mounts )
Blackburn - Outpost Rear World Touring Rack (requires Tuning Chip with threaded rack mounts )
Old Man Mountain - Divide Front Rack axle mounted with Fit Kit SET705.R
Old Man Mountain - Divide Rear Rack axle mounted with Fit Kit SET814
Old Man Mountain - Elkhorn Front Rack axle mounted with Fit Kit SET705.R
Old Man Mountain - Elkhorn Rear Rack axle mounted with Fit Kit SET814
Frame Bag Dimensions
(click on links to view PDF drawings)
