• Salsa Beargrease Carbon - Twilight Purple - Side profile view
  • Salsa Beargrease Carbon - Twilight Purple - Front three quarter view
  • Salsa Beargrease Carbon - Twilight Purple - Rear three quarter view
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Beargrease C GX AXS

Beargrease C GX AXS

$5,999.00 USD
$0.00 USD $5,999.00 USD
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What's My Size?

Beargrease C GX AXS just might be the best fat-tire bike we’ve ever put out in the world. It rides on massive 27.5 x 4.5" tires for excellent rollover, traction, and float on soft surfaces. Beargrease feels like a modern trail MTB, with a long wheelbase, well-balanced weight distribution, and a dropper post for more control. The carbon fiber frame is stiff, lightweight, and loaded with cargo mounts for staying supplied on Adventure by Bike over any terrain, from winter ultras to hitting hot laps on snowy groomed singletrack. 45NRTH carbon rims elevate the ride with an extra-responsive feel, and SRAM’s GX AXS drivetrain delivers effortless shifting and a wide gear range for grinding through tough terrain or pushing race pace.

Warning for Residents of California

⚠️ WARNING: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

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Salsa Beargrease Carbon - Twilight Purple - Side profile view
Beargrease C GX AXS $5,999.00

Beargrease Essentials

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Bike Key Features

Product Details

Build Kit

Frameset

  • Frame

    Beargrease Carbon 4

  • Color

    Twilight Purple

  • Fork

    Bearpaw Carbon 2

  • Rear Shock

    N/A

Components

  • Headset

    FSA NO.57E-T

  • Seatpost

    TranzX YSI63 RAD+, 25mm travel adjustment

  • Stem

    Salsa Guide 35.0, 50mm

  • Grips/Bar Tape

    WTB Wavelength

  • Saddle

    WTB Solano Fusion Chromoly, Medium

  • Handlebar

    Salsa Guide Carbon 35.0

Drivetrain

  • Front Derailleur

    N/A

  • Rear Derailleur

    SRAM GX Eagle Transmission

  • Cassette

    SRAM XS-1275, 10–52t, 12-speed

  • Chain

    SRAM GX Eagle Transmission, 116 links

  • Crankset

    SRAM X0 Eagle DUB Fat5 Transmission, 30t

  • Shifter

    SRAM AXS Pod Rocker Controller

  • Brake Levers

    SRAM Motive V2 Bronze

  • Brake Calipers

    SRAM Motive V2 Bronze

  • Bottom Bracket

    SRAM DUB 100mm, BSA

  • Rotors

    SRAM CenterLine, 6-bolt (160mm front and rear)

Wheels

  • Front Tire

    45NRTH Dillinger 5, 27.5 x 4.5", 120 TPI, tubeless, folding, black, studdable

  • Rear Tire

    45NRTH Dillinger 5, 27.5 x 4.5", 120 TPI, tubeless, folding, black, studdable

  • Front Hub

    Novatec 15 x 150mm

  • Rear Hub

    Novatec 12 x 197mm, XD

  • Spoke

    Double butted 2.0

  • Rim

    45NRTH Levitas carbon, i76, 27.5"

*Specifications are subject to change without notice

Geometry

Geometry Diagram
SizeX-SmallSmallMediumLargeX-Large
A. Effective Top Tube 560.0 582.0 605.0 629.0 654.0
B. Stand Over 682.0 710.0 741.0 775.0 805.0
C. Reach 425.0 445.0 465.0 485.0 505.0
D. Stack 583.0 592.0 605.0 624.0 646.0
E. Total Seat Tube Length 355.0 392.0 430.0 455.0 480.0
F. Headtube Length 95.0 105.0 120.0 140.0 165.0
G. Headtube Angle
65.6
65.6
65.6
65.6
65.6
H. Seat Tube Angle
77.0
77.0
77.0
77.0
77.0
I. BB Drop 69.0 69.0 69.0 69.0 69.0
J. BB Height 321.0 321.0 321.0 321.0 321.0
K. Chainstay Length 446.0 446.0 446.0 446.0 446.0
L. Fork Length Axle to Crown 485.0 485.0 485.0 485.0 485.0
M. Fork Offset 44.0 44.0 44.0 44.0 44.0
N. Wheelbase 1147.0 1171.0 1197.0 1226.0 1256.0
Crank Arm Length 165.0 165.0 165.0 165.0 165.0
Handlebar Width 760.0 760.0 800.0 800.0 800.0
Recommended Rider Height 147.0 - 160.0 157.0 - 170.0 168.0 - 180.0 178.0 - 191.0 188.0 - 201.0
Stem Length 50.0 50.0 50.0 50.0 50.0

Measurements based on:

  • A Salsa Bearpaw Carbon fork measuring 485mm axle-to-crown and a 44mm offset
  • A 45NRTH Dillinger 5 27.5 x 4.5" tire measuring 780mm in diameter
  • Standover is measure from top of toptube to ground 50mm forward of BB center

Size Guide

Beargrease Size Chart (PDF)

Frame Specs

  • Design Wheel/Tire Sizes 27.5 x 4.5"
  • Alternate Wheel/Tire Sizes 29 x 2.6"+, 27.5 x 3.8"+, 26 x 4.0"+
  • Max Tire Outer Diameter Tire Clearance Frame:  27.5 x 4.5" or 26 x 4.8"
    Tire Clearance Fork:  27.5 x 4.5" or 26 x 5.05"
  • Frame Construction Carbon
  • Fork Construction Carbon
  • Suspension Fork Length (Travel) 100mm travel, 524mm A2C
  • Rigid Fork Length 485mm
  • Fork Offset 44mm
  • Rear Spacing 12 x 197mm
  • Rear Axle Size M12 x 224L, 1.0 TP, 14mm TL
  • Rear Brake (Rotor) 160mm post mount
  • Front Brake (Rotor) 160mm post mount
  • Headset - Upper ZS44
  • Headset - Lower ZS56
  • Front Spacing 15 x 150mm
  • Front Axle Size M15 x 198L, 1.5TP, 12mm TL
  • Steerer Tube 1.125-1.5" tapered
  • Crown Race 40mm
  • Seatpost 30.9mm
  • Dropper Post Compatible Yes, internal, 3mm housing optimal
  • Seatpost Clamp 35.4mm
  • Max Post Insertion X-Small: 120x386
    Small: 150x446
    Medium: 150x446
    Large: 170x486
    X-Large: 170x486
  • Front Derailleur Clamp N/A
  • Front Derailleur Type N/A
  • Derailluer Hanger SRAM UDH
  • Bottom Bracket 100mm threaded, BSA
  • Crankset (Max Ring) 32t, 30t oval

Supportive Documents

Support Document links

Additional Features

High-modulus carbon fiber frame

Beargrease’s UDH-ready carbon fiber frame is stiff for maximum pedaling efficiency and keeps weight to a minimum. It also helps reduce trail vibrations for a smooth ride.

Beargrease Geometry

Beargrease geometry brings a modern mountain bike feel to fat-tire riding. A slack 65.6-degree head tube angle and 446mm rear center create a long wheelbase for stability and control in steep terrain and soft conditions. A steep 77-degree seat tube angle distributes weight evenly between front and rear wheels. This improves handling in low-traction conditions and provides more stability at speed while still allowing the bike to navigate tight singletrack situations. Improved standover makes mounting and dismounting easier in deep snow and other challenging terrain.

27.5 x 4.5" wheels and tires

These are the largest wheels and tires we’ve ever offered on a fat-tire bike. They provide enormous traction and float for sticking to your line in steep, soft, and loose terrain. Their size also helps them roll easily rolling over rocks, roots and other trail obstacles for a smoother ride.

Bearpaw Carbon Fork

The redesigned Bearpaw Carbon fork gives you ample cargo space, with two sets of Three Pack mounts and mini-pannier compatibility. Beargrease also supports suspension forks up to 100mm travel.

Dropper post with internal routing

Dropper posts give you more control when riding in challenging terrain and make mounting and dismounting easier in deep snow. Internal routing keeps your cable and housing away from the elements.

Cargo capacity

Beargrease lets you load up for all-day rides or adventures far from home. The main triangle fits three bottles on SM–XL frames (two on XS frames). You can also run a rear rack with the use of our Salsa Rack-Lock Seatpost Clamp (sold separately). Direct-mount frame bag mounts in the main triangle (carbon frames only) make for an extra-secure, streamlined frame bag setup.

Accessory mounts

Beargrease makes it easy to accessorize, with top tube mounts for bags or K-Edge computer mounts. A mount under the downtube lets you carry a repair kit, stove fuel, or other accessories. A downtube fender mount (carbon frames only) helps keep debris at bay.

FAQ

Can I run a front rack on this frame?

The Bearpaw fork is designed with one set of Three-Pack mounts on each fork leg for mounting accessories like the Salsa Anything Cage, a pair of mini panniers, or bottle cages. It is not designed for use with traditional front racks.

Can I run a rear rack on this frame?

Yes, with the lower rack bosses on the frame and a Salsa 35.4 Rack-Lock seatpost collar (sold separately). Make sure the rear rack clears the top of the tire with adequate clearance — follow your rack manufacturer's instructions. We recommend using a rack like the Old Man Mountain Divide Fat rack.

What width cranks will this frame accept?

This Beargrease frame features 197mm rear spacing, but it is still compatible with narrow q-factor cranks designed around a 100mm threaded bottom bracket with a nominal 76–79mm chainline. Both Race Face and SRAM offer cranks like this.

Can I run a front derailleur on this frame?

No, Beargrease is only compatible with 1x drivetrains with a maximum chainring size of 32t .

What wheel and tire sizes can I use on this frame?

Beargrease is capable of running 27.5" wheels with 3.0–4.5" tires on rims up to 82mm internal width; 26" wheels with 3.8–4.8" tires on rims up to 100mm rims; and 29" wheels with 2.6–3.0" tires on rims up to 50mm.

Can I use a suspension fork on this frame?

Yes, you can run any suspension fork that has an axle to crown of 524mm (typically a 100mm travel fork), no adapters needed.

What are the upper mounts on the underside of Beargrease Carbon's downtube for?

Beargrease is designed to accept a bolt-on downtube fender like the PDW Mud Shovel 6.5 Front Fender in combination with a clip-on rear fender like the PDW Mud Shovel 6.5 Rear Fender.

What are the mounts under the top tube for?

Beargrease offers bolt-on framebag mounting points for half- or full-frame bags under the toptube on carbon fiber frames for clean and easy install.

Do you offer touch-up paint?

No, we do not offer touch up paint. Hobby shops or automotive stores are excellent places to find paint. We suggest you test the paint on a scrap piece of metal before using it on your frame.

I crashed and dented (or cracked) my frame. Is it safe to ride?

Stop riding your frame immediately and take it to the nearest Salsa authorized dealer for inspection. A dented or cracked tube represents a structural weakening of the frame, and is a safety risk.

What is the warranty for this bike?

View Warranty

Warranty Information

All Salsa products are warranted against manufacturing defects in materials and workmanship from the date of retail purchase of the product, subject to the limitations detailed below.

Review Warranty Info