Overview
| 49cm | 52cm | 54cm | 56cm | 58cm | 60m | |
| Recommended rider height | 4’11”-5’2″ | 5’2″-5’4″ | 5’4″-5’8″ | 5’8″-6’0″ | 6’0″-6’2″ | 6’2″-6’5″ |
| Recommended rider inseam | 25″-29″ | 28″-30″ | 30″-33″ | 32″-34″ | 33″-35″ | 34″-37″ |
| Effective top tube | 510mm | 530mm | 545mm | 565mm | 580mm | 600mm |
| Nominal head tube angle | 70° | 70.5° | 71° | 71.5° | 72° | 72° |
| Tuning Chip induced head/seat tube angle change | ±0.2° | ±0.2° | ±0.2° | ±0.2° | ±0.2° | ±0.2° |
| Head tube length | 87mm | 95mm | 115mm | 140mm | 165mm | 185mm |
| Nominal seat tube angle | 75° | 74.5° | 74° | 73° | 72.5° | 72° |
| Seat tube length | 400mm | 505mm | 530mm | 550mm | 570mm | 590mm |
| Bottom bracket drop | 58-62mm | 68-72mm | 68-72mm | 68-72mm | 68-72mm | 68-72mm |
| Chainstay length | 410-430mm | 420-440mm | 420-440mm | 420-440mm | 420-440mm | 420-440mm |
| Wheelbase | 1000-1020mm | 1017-1037mm | 1023-1043mm | 1028-1048mm | 1032-1052mm | 1046-1066mm |
| Trail | 70mm | 71mm | 70mm | 67.5mm | 65mm | 65mm |
| Fork offset | 47mm | 47mm | 47mm | 47mm | 47mm | 47mm |
| Rigid fork axle to crown length | 420mm | 420mm | 420mm | 420mm | 420mm | 420mm |
| Stack | 532mm | 549mm | 570mm | 596mm | 622mm | 641mm |
| Reach | 368mm | 378mm | 381mm | 383mm | 384mm | 392mm |
| Standover | 677mm | 760mm | 780mm | 800mm | 820mm | 840 mm |
Features
Tuning Chip™: Adjustable dropout system for fine-tuning wheelbase and bottom bracket height.
Multiple Braze-ons: Supports racks, fenders, and multiple water bottle mounts for versatile gear carrying options.
Progressive Geometry: Designed for stability and agility across various terrains.
Suspension Capable: Can accommodate gravel suspension forks for added comfort on rough trails.
Dropper Post Compatible: Frame supports internally routed dropper seat posts for enhanced control on descents.
Specs
Most components can be customized at time of order, contact us!
Build Specs
| Frame | Otso custom butted 4130 Chromoly tubing with Tuning Chip™️ dropout system |
| Fork | Lithic full carbon fork, 12mm thru-axle |
| Headset | Wolf Tooth Performance Headset |
| Rear derailleur | Shimano GRX 810, 11 speed |
| Front derailleur | n/a |
| Shifters | Shimano GRX 800 |
| Cassette | Shimano SLX, 11-40T, 11-speed |
| Brakes | Shimano GRX 400 Hydraulic |
| Cranks | Shimano GRX 800 |
| Bottom bracket | Shimano English threaded BSA, Ø68mm |
| Handlebar | Choice of Lithic Corundum or Lithic Aventurine |
| Grips | Anti-Slip Gel Bar Tape |
| Stem | 6061 aluminum |
| Seatpost | Aluminum 27.2 350mm – Black |
| Seatpost Clamp | Wolf Tooth 31.8 Black |
| Seat | WTB Silverado |
| Wheels | SUNringle Duroc 30 Comp 700c, 26mm inner width – SUNringle G30 Expert 650b, 25mm inner width for 49cm frame |
| Tires | Schwalbe G-One RS, Super Race, V-Guard, TLE 700×40 Black – Schwalbe G-One Allround 650×40, Black for 49cm frame |
| Chain | Shimano 11-speed |
Warranty
Warranty Coverage:
- All Otso frames are warranted against defects in materials and workmanship for 5 years from the date of retail purchase.
- This warranty applies to the original owner only and is not transferable.
- Please keep your sales receipt or order number for any warranty claims to ensure a quick resolution.
What’s Not Covered:
- Damage from improper assembly, maintenance, or user/assembler inexperience.
- Modifications, neglect, misuse, competition, commercial use, or accidents.
- Installation of incompatible components, parts, or accessories.
- Normal wear and tear, or damage to paint, surface finish, or aesthetics.
- Compatibility of original components with a replacement frame is not guaranteed.
- Costs for labor, parts removal, refitting, or re-adjustment, including wheel rebuilds.
Claim Process:
- Warranty claims are limited to the repair or replacement of the defective frame, at Otso’s discretion.
- This warranty does not cover incidental or consequential damages.
Legal Information:
- This warranty gives you specific legal rights, which may vary based on location. It does not affect your statutory rights.