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2026 Otso

Fenrir Stainless Frame

A steel frame gravel frameset with hydraulic disc brakes.

Manufacturer Price

$2,040$2,550
Weight5.7 lbs (frame)  
FrameSteel
SuspensionRigid
Wheels29″
BrakesHydraulic Disc
View on otsocycles.comLearn about Otso
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Insights
Sizing
XS

4'9" – 5'5"

SM

5'2" – 5'8"

MD

5'6" – 6'0"

LG

5'10" – 6'4"

XL

6'2" – 6'6"

Rider Fit Notes

None yet.

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Price History
Reviews
BIKEPACKING.com
Otso Fenrir Steel Review: Earth From Sky

May 2026 · By Nic Morales

In Nic's Otso Fenrir Steel review, he takes a look at whether this storied drop bar mountain bike is as good in chromoly...

Highs
  • A great drop-bar mountain bike gets more affordable

  • Tubing feels supple and capable

  • Geometry is confidence-inspiring

  • Lithic fork is capable and comfortable

  • Solid number of mounts and a good bikepacking bike

Lows
  • Some will lament the loss of the Tuning Chip

  • High stack height won’t be for everyone

  • $1,950 is still expensive for a frameset

  • Could use a three-pack mount on the underside of the downtube

Read Review

Geometry
Specs
Build
Frame

Custom butted austenitic stainless steel frame

BB StandardBSA, 73mm, Threaded

Tire Clearance2.3"

Fork

No Fork

Bottom Bracket

Shimano english thread BSA, Ø73mm

Headset

ZS44/28.6 upper, EC44/40.0 lower

Seatpost

Ø31.6mm

TypeRigid

Groupset
Brakes

Flat mount, 74mm post mount available(160mm)

TypeHydraulic Disc

Wheels
Disc Rotors

Flat mount, 74mm post mount available(160mm)

Rider Notes
Riders Also Viewed

First added March 7

Last updated June 1