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2023 Otso

Fenrir Stainless Drop Bar

A steel frame gravel bike with high-end components and shimano grx 600 hydraulic disc brakes.

Manufacturer Price

$3,090
Weight5.7 lbs (frame)  
FrameSteel
SuspensionRigid
ForkENVE
Wheels29″ Aluminum
Drivetrain1 × 11
GroupsetGRX 800, GRX 600
BrakesShimano GRX 600 Hydraulic Disc
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Insights
Ride Feel

Based on frame geometry and build specs.

Rider Position
relaxedaggressive
Terrain
smoothrugged
Fenrir Stainless Drop Bar
Other Gravel bikes
Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

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.

Do you have this bike? Help other riders make a decision about which size will work for them by sharing your own size and fit notes.

Reviews
BIKEPACKING.com
Otso Fenrir Ti Review

Jul 2023 · Neil Beltchenko

Find our complete Otso Fenrir Ti review after 550 miles of use while bikepacking, gravel grinding, and trail riding in Utah and Colorado...

Highs
  • Has more MTB steering characteristics (more trail) than most drop-bar MTBs, so it holds a line better and feels more stable

  • Tune-able geometry with tuning chip, which also allows the bike to be post or flat mount

  • Very comfortable ride quality without sacrificing performance

  • Good tire clearance for 29 x 2.6″ rubber (and should easily fit 2.8″ in rear tuning chip position)

  • Pretty light for a metal bike at 23.45 pounds naked with pedals

  • Loads of mounts and bikepacking provisions

Lows
  • Funky sizing and build options

  • Complexity and options can be frustrating to dial in the bike

  • Dropper should be standard, and 31.6 diameter post is overkill

  • Expensive

  • 1x-specific will be an issue for some folks

  • The middle tuning chip should be included

Read Review

Geometry
Specs
Build
Frame

Custom butted austenitic stainless steel frame

BB StandardBSA, 73mm, Threaded

Tire Clearance2.3"

Fork

Carbon Enve Mountain Fork, 15mm thru axle

Bottom Bracket

Shimano english thread BSA, Ø73mm

Headset

ZS44/28.6 upper, EC44/40.0 lower

Handlebar

Lithic Corundum aluminum compact drop with 16° flare

Seatpost

Ø31.6mm

TypeRigid

Groupset
Rear Derailleur

Shimano GRX 810, 11-speed

Front Derailleur

N/A

Crank

Race Face Aeffect

Shifters

Shimano GRX 600, 11-speed

Cassette

Shimano SLX, 11-46T, 11-speed

Brakes

Shimano GRX 600 hydraulic

TypeShimano GRX 600 Hydraulic Disc

Wheels
Rims

Sun Ringle Duroc 30

Tires

Maxxis Aspen 29" x 2.4"

Disc Rotors

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

Rider Notes
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First added February 7

Last updated September 23

Not listed for 982 days