Beargrease Carbon Fat Tire Bike - 27.5" Wheels with Shimano Deore 11-Speed Drivetrain | Perfect for Snow, Sand & Off-Road Adventures

When you combine race-bike technology with fat-tire-bike capability, you get Beargrease.

We designed this machine for the world’s toughest winter races, but it still knows how to have fun on snowy and winding singletrack. The carbon fiber frame and fork minimize weight and maximize power transfer. The extra diameter of 27.5” wheels offers more momentum and rollover capability than 26” wheels. Frame and fork mounts for extra bottles and cargo make it easier to gear up for your long days out or even overnighters. Add Shimano’s Deore 11-speed components, and it all adds up to one of the best carbon fat tire bikes out there, whether you’re a racer or just enjoy the feel of a fast and light fat tire ride.

Key Features

On-Bike Storage
Carry more on your bike and less on your body. Our frames and forks feature mounts for extra bottles, camping gear, and ride accessories.

High-Modulus Carbon Fiber Frame
This material offers improved stiffness, better vibration damping, excellent durability, and weight savings compared to other frame materials

Beargrease Geometry
A long front/center, short stem, and wide bars, and 440 mm chainstays create room to move and add confidence while maneuvering on tight trails. This geometry results in a fat bike that rides like a trail bike. It is stable, steers well in loose conditions, and remains nimble and agile despite the massive wheels and tires. The low bottom bracket height is also key to keeping the rider’s center of gravity low, which makes dabbing, dismounting, and remounting easier

27.5 x 3.8” Wheel & Tire Size
Beargrease rolls on 27.5 x 3.8" wheels and tires. For groomed snow or dirt, this diameter provides increased rollover, a longer contact patch, and the flotation of a 3.8" tire without the added rolling resistance when compared to a 26" wheel

Bearpaw Fork
This carbon fork features a 150 x 15 mm thru-axle that boosts stiffness and improves steering precision. The fork also features our Three-Pack mounts for accessorizing with Anything Cages or water bottle cages

Front Wheel and Tire Options
The fork included with this frame works with the following wheel and tire combinations: 26 x 3.8–5" on up to a 100 mm rim / 27.5 x 3.0–4.0" on an 80 mm rim / 29 x 2.3–3.0"" on a 50 mm rim

Rear Wheel & Tire Options
The Beargrease Carbon frame is compatible with the following wheel, tire, and rim sizes: 26 x 4.3–4.6" on up to a 100 mm rim / 27.5 x 3.0–4.0" on an 80 mm rim / 29 x 2.3–3.0" on a 50 mm rim

Optimal Drivetrain Design with Narrow Q-Factor Cranks
The Beargrease Carbon frame is designed for the best of all drivetrain performance while maintaining narrow fat bike crank arms for less knee stress: 197 mm symmetrical rear end for modern rim and tire fit / 100 mm threaded bottom bracket / Rider-friendly narrow Q-factor cranks / 1x optimized frame design / Up to a 32t max chainring

Internal Sleeved Cable Routing
The Beargrease Carbon frame features fully sleeved, internal cable routing. This improves shifting performance in poor conditions, increases time between maintenance intervals, and makes running new cables and housing a breeze

Dropper Post Compatible with Stealth Routing
Compatible with 30.9 mm dropper posts for true trail bike riding experiences

Rear Rack Compatible
Designed for use with the Salsa Alternator 170177 Rear Rack, with the addition of a Salsa Rack-Lock seat collar

Multiple Accessory Frame Mounts
Beargrease features numerous accessory mounts: Top tube mounts accommodate K-Edge Top Tube Mount for bike computers or the Salsa EXP Series Direct Mount Top Tube Bag / 2 water bottle mounts inside frame triangle / 1 accessory mount underneath downtube

Build Kit

Frameset

Drivetrain

Components

Wheels

Weight

Frame Specs

Geometry