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2026 Otso

Fenrir Steel - Frameset

A steel frame gravel frameset with hydraulic disc brakes.

Manufacturer Price

$1,950
Weight6.7 lbs (frame)  
FrameSteel
SuspensionRigid
Wheels29″
BrakesHydraulic Disc
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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

Specs
Build
Frame

Otso custom butted 4130 Chromoly tubing with UDH-compatible dropouts

BB StandardBSA, 73mm, Threaded

Hanger StandardUDH

Tire Clearance2.6"

Bottom Bracket

Shimano english thread BSA, Ø73mm

Headset

ZS44/28.6 upper, EC44/40.0 lower

Seatpost

Ø31.6mm

TypeRigid

Groupset
Brakes

Flat mount 160mm native, flat to post mount adapter available for both 160mm and 180mm rotors

TypeHydraulic Disc

Wheels
Disc Rotors

Flat mount 160mm native, flat to post mount adapter available for both 160mm and 180mm rotors

Rider Notes
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First added May 10

Last updated June 7