Overview
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.
Features
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.
Specs
Frame
- Material: 3Al-2.5V titanium
Fork
- 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
Brakes
- Brake Mount: Post mount
Headset
- Headset: ZS44/28.6 upper, EC44/40 lower
Bottom Bracket
- Type: BSA English threaded
- Width: 73mm
Seatpost
- Diameter: 31.6mm
Weight
- 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.
Geometry
| XS | S | M | L | XL | |
| Recommended rider height | 4’10”-5’4″ | 5’3″-5’7″ | 5’7″-5’11” | 5’11”-6’3″ | 6’3″-6’6″ |
| Effective top tube | 547mm | 565mm | 583mm | 600mm | 618mm |
| Nominal head tube angle | 68° | 68° | 68° | 68° | 68° |
| Tuning Chip-induced head/seat tube angle change from middle position | ±0.25° | ±0.25° | ±0.25° | ±0.25° | ±0.25° |
| Head tube length | 90mm | 100mm | 120mm | 140mm | 160mm |
| Nominal seat tube angle | 75° | 75° | 75° | 75° | 75° |
| Seat tube length | 360mm | 400mm | 450mm | 490mm | 530mm |
| Bottom bracket drop | 68-72mm | 68-72mm | 68-72mm | 68-72mm | 68-72mm |
| Chainstay length | 430-450mm | 430-450mm | 430-450mm | 430-450mm | 430-450mm |
| Wheelbase | 1090-1110mm | 1110-1120mm | 1130-1150mm | 1150-1170mm | 1170-1190mm |
| Trail | 88mm | 88mm | 88mm | 88mm | 88mm |
| Fork offset | 51mm | 51mm | 51mm | 51mm | 51mm |
| Rigid fork axle to crown length | 495mm | 495mm | 495mm | 495mm | 495mm |
| Stack | 595mm | 605mm | 623mm | 642mm | 660mm |
| Reach | 387mm | 403mm | 416mm | 428mm | 441mm |
| Standover | 754mm | 777mm | 810mm | 838mm | 866mm |
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.