Otso Fenrir Stainless Frame 2025
2025 Mountain
Estimate price |
2,550$
Weight | 2.58 kg 
Bike details
Overview
Key information split into simple groups.
Frame summary
-
Category -
Frame Steel -
Brakes Hydraulic Disc
Sizing
Recommended size guide.
XS
147cm - 162cm
SM
160cm - 172cm
MD
169cm - 182cm
LG
179cm - 192cm
XL
189cm - 198cm
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
Custom butted austenitic stainless steel frame
Suspension Fork
No Fork
Drivetrain
Bottom Bracket
Shimano english thread BSA, Ø73mm
Brakes
Brakes
Flat mount, 74mm post mount available(160mm)
Cockpit
Headset
ZS44/28.6 upper, EC44/40.0 lower
Seat
Seatpost
Ø31.6mm
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | XS | SM | MD | LG | XL |
|---|---|---|---|---|---|
| Stack Reach Ratio | 1.537 mm | 1.501 mm | 1.498 mm | 1.5 mm | 1.497 mm |
| Bottom Bracket Height | 306 mm | 306 mm | 306 mm | 306 mm | 306 mm |
| Front Center | 669 mm | 689 mm | 709 mm | 729 mm | 749 mm |
| Rake | 51 mm | 51 mm | 51 mm | 51 mm | 51 mm |
| Trail | 88 mm | 88 mm | 88 mm | 88 mm | 88 mm |
| Stack | 595 mm | 605 mm | 623 mm | 642 mm | 660 mm |
| Reach | 387 mm | 403 mm | 416 mm | 428 mm | 441 mm |
| Top Tube Length | 547 mm | 565 mm | 583 mm | 600 mm | 618 mm |
| Seat Tube Length | 360 mm | 400 mm | 450 mm | 490 mm | 530 mm |
| Head Tube Angle | 68 ° | 68 ° | 68 ° | 68 ° | 68 ° |
| Head Tube Length | 90 mm | 100 mm | 120 mm | 140 mm | 160 mm |
| Chainstay Length | 430 mm | 430 mm | 430 mm | 430 mm | 430 mm |
| Wheelbase | 1090 mm | 1110 mm | 1130 mm | 1150 mm | 1170 mm |
| Bottom Bracket Drop | 68 mm | 68 mm | 68 mm | 68 mm | 68 mm |
| Standover Height | 754 mm | 777 mm | 810 mm | 838 mm | 866 mm |
| Wheels | 29" | 29" | 29" | 29" | 29" |
| Rider Min Height | 147 cm | 160 cm | 169 cm | 179 cm | 189 cm |
| Rider Max Height | 162 cm | 172 cm | 182 cm | 192 cm | 198 cm |