Fenrir Stainless

bikepacking your way

The Fenrir Stainless is a ride-anywhere bike for bikepacking races and afternoon adventures alike. It can be built with drop bars or with MTB bars and both selections are available as stock build options. A tire clearance of 29" x 2.6" or 27.5" x 2.8" keeps the Fenrir rolling on rough terrain, while extra frame and fork braze-ons are ready to carry gear for days or weeks on the trail. Like all Otso bikes, the Fenrir Stainless has adjustable geometry via the patented Tuning Chip rear dropout system that makes the bike as adaptable as its rider.

BUILD YOUR FENRIR STAINLESS

Otso bikes are available to purchase here on our website or with our network of Otso dealers. Our Custom Bike Configurator allows you to select most component options on your bike, including drivetrain, wheelset, tires, handlebars, seatpost, anodized accent color option, and more. The Fenrir Stainless is also available as a frameset if you already have parts ready to go at home. When an order is placed, the Otso team builds the bike based on your custom specs and ships it to you. Home assembly is as simple as putting on the wheels and straightening the handlebars. We’re happy to talk through options to help you build the Fenrir Stainless that is perfect for you and your riding style.

Otso has a small (but growing!) network of bike shops that sell our bikes. Click the button to the right to see a map of all Otso dealers. If there is not one in your area, you can still build and order any of our bikes right here on our website. Give us a shout at sales@otsocycles.com with any questions.

Find a Dealer

Versatility

While all Otso bikes are known for their versatility, the Fenrir might be the most versatile yet. It was designed to accommodate drop bars with a 50mm stem or MTB bars with an 80mm stem. It can be built with gears or single speed, with a suspension fork or rigid, with a mechanical or electronic drivetrain, or with a dropper or rigid seat post. The ability to fully customize the build of the bike makes the Fenrir as versatile as its rider.

Fenrir with Drop Bars

The Fenrir was designed with the option to be built with drop bars or MTB bars. When configured with drop bars, the Fenrir rides like an extra-capable gravel bike. The relatively longer top tube means a shorter stem is needed with drop bars to align with the rider‘s preferred reach. It can be built with standard road/CX/gravel bars for rides on local trails or with wider bars to fit a handlebar roll loaded with lots of gear.

Fenrir with Flat Bars

When built with MTB bars, Fenrir rides like a 90s XC bike. It’s fun and lively, yet efficient and Capable with a capital C. It can handle any sketchy descent or technical climb with ease. Because the top tube is relatively short for a mountain bike, a longer stem (80-90mm) is ideal for maintaining reach. Ride it on your local singletrack or load ’er up for that backcountry tour that you’ve been dreaming about—you know the one. However you choose to build it, Fenrir will ride any road/trail on the map and carry all the gear to get you there.

Optimized for Bikepacking

Every last feature of Fenrir is optimized for bikepacking. The stainless steel frame is strong, comfortable, and surprisingly light weight. It can be built with flat bars or drop bars depending on your affinity for large handlebar rolls. Single speed is an option for folks who like simplicity while touring. It has extra mounts on the frame and fork for hauling all the gear you‘ll need for days (or weeks) on the trail. The frame and fork can clear 29" x 2.6" or 27.5" x 2.8" tires for trails that are especially gnarly. No matter your destination and how long it takes to get there, Fenrir is ready.

Single Speed

All metal Otso bikes have the option to be built single speed or with gears. Fenrir is included in that group because it has a small notch on the rear dropout near the Tuning Chip. If you build your Fenrir with gears, but want to convert to single speed later on, we have the single speed Tuning Chip available on our website alongside other accessories. There's no wrong way to build your Fenrir.

So Many Mounts

A bikepacking bike needs to be able to carry all the gear for days or weeks on the trail. Fenrir has mounts for bottles, fenders, and racks. The Enve fork also has three-pack mounts on either side for sharing the load.

Capable Geometry

Pick a trail on the map and ride it. Fenrir has the endurance of a gravel bike, with the stability of a mountain bike. Above all, it is Capable with a capital C so you can stay the course and reach your destination.

Dropper Friendly

A small port near the bottom of the seat tube allows for the cable routing of a dropper post. If you don’t ride with a dropper, you probably won’t even notice the port.

Ample Clearance

Tires need to meet demands of the trail for traction, stability, and comfort. Fenrir can ride up to 29" x 2.8" or 27.5" x 3.0" tires.

TECHNICAL DETAILS

Build Specs

Frame Specs

Geometry

Racks & Fenders

Compatible Fenders

PDW - Sodapop

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 SET822

Frame Bag Dimensions

(click on links to view PDF drawings)

Otso has a small (but growing!) network of bike shops that sell our bikes. Click the button to the right to see a map of all Otso dealers. If there is not one in your area, you can still build and order any of our bikes right here on our website. Give us a shout at sales@otsocycles.com with any questions.

FIND A DEALER

VERSATILITY

While all Otso bikes are known for their versatility, the Fenrir might be the most versatile yet. It was designed to accommodate drop bars with a 50mm stem or MTB bars with an 80mm stem. It can be built with gears or single speed, with a suspension fork or rigid, with a mechanical or electronic drivetrain, or with a dropper or rigid seat post. The ability to fully customize the build of the bike makes the Fenrir as versatile as its rider.

FENRIR WITH DROP BARS

The Fenrir was designed with the option to be built with drop bars or MTB bars. When configured with drop bars, the Fenrir rides like an extra-capable gravel bike. The relatively longer top tube means a shorter stem is needed with drop bars to align with the rider's preferred reach. It can be built with standard road/CX/gravel bars for rides on local trails or with wider bars to fit a handlebar roll loaded with lots of gear.

FENRIR WITH FLAT BARS

When built with MTB bars, Fenrir rides like a 90s XC bike. It's fun and lively, yet efficient and Capable with a capital C. It can handle any sketchy descent or technical climb with ease. Because the top tube is relatively short for a mountain bike, a longer stem (80-90mm) is ideal for maintaining reach. Ride it on your local singletrack or load 'er up for that backcountry tour that you've been dreaming about--you know the one. However you choose to build it, Fenrir will ride any road/trail on the map and carry all the gear to get you there.

OPTIMIZED FOR BIKEPACKING

Every last feature of Fenrir is optimized for bikepacking. The stainless steel frame is strong, comfortable, and surprisingly light weight. It can be built with flat bars or drop bars depending on your affinity for large handlebar rolls. Single speed is an option for folks who like simplicity while touring. It has extra mounts on the frame and fork for hauling all the gear you'll need for days (or weeks) on the trail. The frame and fork can clear 29" x 2.6" or 27.5" x 2.8" tires for trails that are especially gnarly. No matter your destination and how long it takes to get there, Fenrir is ready.

SINGLE SPEED

All metal Otso bikes have the option to be built single speed or with gears. Fenrir is included in that group because it has a small notch on the rear dropout near the Tuning Chip. If you build your Fenrir with gears, but want to convert to single speed later on, we have the single speed Tuning Chip available on our website alongside other accessories. There's no wrong way to build your Fenrir.

AND SO MUCH MORE ...

SO MANY MOUNTS

A bikepacking bike needs to be able to carry all the gear for days or weeks on the trail. Fenrir has mounts for bottles, fenders, and racks. The Enve fork also has three-pack mounts on either side for sharing the load.

CAPABLE GEOMETRY

Pick a trail on the map and ride it. Fenrir has the endurance of a gravel bike, with the stability of a mountain bike. Above all, it is Capable with a capital C so you can stay the course and reach your destination.

DROPPER FRIENDLY

A small port near the bottom of the seat tube allows for the cable routing of a dropper post. If you don't ride with a dropper, you probably won't even notice the port.