Overview
Features
Material: Constructed with ultralight EPS molded carbon for durability and weight reduction.
Tire Compatibility: Can accommodate up to 29″ x 2.1″ tires, allowing for significant versatility in tire choice to suit different riding conditions.
Geometry: Features adjustable geometry which is suitable for both competitive gravel racing and leisurely bikepacking.
Suspension Correction: The frame is suspension-corrected to align with different fork options.
Dropper Post Compatibility: Supports internal routing for dropper posts, enhancing its capability for technical trails and steep descents.
Specs
Bottom Bracket
- Standard: 68mm BSA threaded
Q-Factor
- Specification: 146mm with Shimano 105 crankset
Maximum Chainring Size
- 2x Setup: 53T round
- 1x Setup: Varies by chainline (46T, 48T, 50T), reduced by 2 teeth for oval
Derailleur System
- Front Derailleur Type: Braze-On, bottom pull
Headset
- Specification: ZS44/28.6 upper, ZS56 lower
Seatpost
- Diameter: Ø30.9mm
- Clamp Diameter: Ø34.9mm
Hubs and Axles
- Front/Rear Hub Standard: 100x12mm / 142x12mm thru axle
- Axle Dimensions: Ø12x125mm front, Ø12x180mm rear
Brakes
- Type: Flat mount (160mm rotor)
Fork Specifications
- Axle-to-Crown: 420mm
- Offset: 47mm
Frame and Fork Weights
- Frame Weight (M): 1024g
- Fork Weight: 490g (Lithic Hiili 420)
Tire Clearance
- Frame: Up to 54mm wide in 700c or 650b
- Fork: Max 29 x 2.1″
Additional Specifications
- Max Rider + Gear Weight: 275 lbs
- Spacer Stack Limits: 40mm below stem, 10mm above stem
- Stem Bolt Torque: Max 6 Nm
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.