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Unrivaled Versatility

Configure your Fenrir Ti to your bikepacking style, and yours alone. This bike can be built with the components that you need to ride with comfort and confidence for multi-day tours. Best of all, with the Fenrir geometry, there is no compromise in ride quality, whether built with drop bars or flat bars. However and wherever you like to ride, the Fenrir is ready.

Technical Details

Build Specs
Frame Specs
Geometry
Racks & Fenders

Compatible Racks

Axiom - Streamliner 29er DLX Rear Rack

Topeak - Uni Super Tourist DX Rear Rack

Blackburn - Outpost Rear World Touring Rack

Old Man Mountain - Divide Front Rack axle mounted with Fit Kit SET701

Old Man Mountain - Divide Rear Rack axle mounted with custom Fit Kit SET826 for 1.0TP

 

Frame Bag Dimensions

(click on links to view PDF drawings)

X-Small

Small

Medium

Large

X-Large

  • 5 stars: 6 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
Some of the reviews shown are from related products the merchant grouped with this one.
M
Maxell Richardson

I spent a long time narrowing down my quiver before landing on the Otso Fenrir Ti, and it's paid off. I bought it for Leadville-style days, big, rough, barely-gravel epics like the Dirty LeMond, and for carrying gear on multi-day self-supported racing. The Fenrir handles both.

My build is unconventional: drop bars (Lithic Aventurine), SRAM Rival/GX AXS mullet 1x12, a RockShox SID Ultimate at 120mm up front, DT Swiss M1900 wheels and Schwalbe Rick XC 2.4s. The drop bars were non-negotiable for two reasons. On really long days, multiple hand positions make a huge difference in staying comfortable. And wide flat bars are genuinely painful for my wrists, so a drop bar opens up this kind of riding for me.

So far I've done two four-hour rides on trails that are more mountain bike than gravel, and it handled remarkably well. Through rock gardens and chunky, mildly technical sections, it was as sure-footed as a mountain goat.

The titanium frame takes the edge off rough terrain without feeling dead, and the details are excellent: UDH dropouts, generous mounts for bags and racks, and clearance for real mountain tires.

A big shout-out to Trevor at Otso. Getting this bike had a few hiccups: website snafus, tariff uncertainty, shipping delays, and some technical puzzles around pairing road brakes with a suspension fork (honestly, I'm still not 100% on all the jargon). Through it all, Trevor kept me informed and pushed to get my beloved Titanium Pony to me as quickly as possible. Thanks, Trevor!

If you want a drop-bar bike that rides like a mountain bike and is built to carry gear for days, the Fenrir Ti belongs at the top of your list. Otso nailed this one.

A
Andy Ward

I built up my Ti Fenrir up with a 100mm fox 32 with drop bars, and it’s an absolute beast, such a capable bike, that talk of comfort & compliance is absolutely real, from crossing the Canadian washboard prairies, to under biking my local mountain bike trails, to taking the mighty Koko claims KOM this bike has delivered & become the perfect adventure partner. With spaces for big chainrings & big tires I question if I even need a gravel bike anymore.

N
Nikki Hussein

I'm a retired senior and loving this bike! Coming up on 900 miles, it's been great on all surfaces, and really stable fully loaded. I have 27.5x2.8 tires on it and size small is perfect for my 62" self. It's easy to keep up with friends on hilly road rides with this gearing. I've taken it through sand dunes, on mountain forest service roads and singletrack. It's responsive, yet grounded over sketchy terrain even without suspension. I'm riding two more events this weekend, one road ride, one desert trail ride with dunes.

B
Barry Tilson

I'm very impressed with the Fenrir Ti's ride quality when loaded. Coming from a steel dropbar gravel touring bike and a lightweight carbon hardtail, I find it better for a mix of hardtail mountain biking, bikepacking racing, and adventure bikepacking. When out of season, I use it as my daily driver. Currently running it with a 100mm fork is great; I would like to try a 120mm just for fun to see if I can clear 2.6 tires up front.

T
T.Clay

High stack, monster drop-bar MTB and near perfect bikepacking rig. This is now my all time favorite bikes (and I own quite a few!).

C
Camron Newton

Loving the bike