Otso Fenrir Ti Frame


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The Otso Fenrir Ti Frame is constructed from 3Al-2.5V titanium, offering a lightweight and durable foundation for bikepacking, gravel grinding, and long-distance touring.


The Otso Fenrir Ti Frameset is perfect for adventurers looking for a durable and versatile setup. Built with 3Al-2.5V titanium, it’s lightweight, strong, and resistant to corrosion. The Tuning Chip™ dropout system lets you tweak the geometry for the best handling on any terrain. It supports tires up to 29” x 2.6” or 27.5” x 2.8” and has multiple mounts for all your bikepacking gear.


Premium Titanium Construction: Built from 3Al-2.5V titanium, the frame is lightweight, exceptionally strong, and corrosion-resistant, ensuring a smooth and durable ride.

Adjustable Geometry: Otso’s Tuning Chip™ dropout system allows for customization of the wheelbase and bottom bracket height, optimizing handling and performance on various terrains.

Generous Tire Clearance: Fits tires up to 29” x 2.6” or 27.5” x 2.8”, providing versatility for different riding surfaces and enhancing off-road capabilities.

Versatile Mounting Options: Equipped with multiple mounts for racks, fenders, and gear, making it ideal for bikepacking, long-distance touring, and carrying all necessary equipment for extended adventures.

Fork Compatibility: Designed to work with both rigid and suspension forks (up to 100mm travel), offering flexibility to tailor the ride to your preference and the demands of your route.

Unique Design Elements: Features a sleek, brushed finish with bead-blasted graphics, combining functional durability with an attractive, distinctive look.



  • Material: 3Al-2.5V titanium


  • Compatibility: Designed to work with both rigid and suspension forks (up to 100mm travel)

Geometry Adjustability

  • Tuning Chip™ dropout system allows customization of:
    • Wheelbase
    • Bottom bracket height

Tire Clearance

  • Maximum Tire Size:
    • 29” x 2.6”
    • 27.5” x 2.8”

Mounting Points

  • Multiple mounts for racks, fenders, and gear


  • Brake Mount: Post mount


  • Headset: ZS44/28.6 upper, EC44/40 lower

Bottom Bracket

  • Type: BSA English threaded
  • Width: 73mm


  • Diameter: 31.6mm


  • Frame Weight: Approximately 1,950g (medium size)

Unique Features

  • Material Benefits: Lightweight, strong, corrosion-resistant titanium frame for durability and smooth ride quality.
  • Adjustability: Tuning Chip™ system for fine-tuning geometry, enhancing handling across various terrains.
  • Versatility: Ample tire clearance and multiple mounting points for bikepacking and long-distance touring.
  • Design: Sleek brushed finish with bead-blasted graphics for an attractive and distinctive look.


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.