2021 Cutthroat C GRX 600

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Built for the rigors of America's longest mountain bike race, the Tour Divide inspired Cutthroat Carbon GRX 600 is one of the best bikepacking bikes for long rides through a variety of conditions and surfaces when speed is of the essence. Designed with drop bar mountain bike geometry and a lightweight carbon frame featuring our Class 5 VRS for comfortable compliance, Cutthroat is ready to put in big miles on any terrain. Ample cargo mounts let you distribute weight evenly around the bike for maximum maneuverability. Shimano's GRX 600 drivetrain provides brilliant braking and shifting with the gear range for gravel flats and mountain passes alike.


  • Cutthroat Carbon Fork

    With trail-taming compliance and abrasion-resistant plates in high-wear areas, the Cutthroat Carbon fork is designed for the rigors of rides that cover multiple road surfaces in unpredictable conditions

  • Class 5 VRS

    The Class 5 Vibration Reduction System revolves around seatstays with a tall, thin, vertically-oriented profile that promotes vertical compliance by allowing the seatstays to "flex" outwards on impacts. Horizontally-oriented chainstays work to resist torque and maintain a laterally stiff rear end. The lack of seatstay and chainstay bridges allows the full length of the stays to contribute to flexibility. A rear thru-axle delivers precise tracking while allowing the seatstays to provide incredible compliance

  • Interior Junction Control Molding Technology

    We use interior molds at all of the main front triangle junctions during layup and curing. This allows for precise control of wall thickness and inner-wall smoothness in these areas. This process increases compaction and reduces voids and wrinkles in critical high-stress zones. The end result is a top-quality carbon frame that delivers consistent high performance

  • Cutthroat Geometry

    Our drop bar mountain bike geometry features a 69° head tube angle for a long wheelbase that provides supreme stability over long days on any surface. 445 mm chainstays with Class 5 VRS will get you through everything from remote two-track gravel roads to technical singletrack trails, with the efficiency and comfort that endurance riders need to keep at it day after day. Cutthroat is designed for optimized fit with the Salsa Cowchipper or Woodchipper Bars

  • Tour Divide-Inspired Features

    Designed for maximum frame bag volume on every size. Stay hydrated with room for three bottles on 54-60 cm frames (two bottles on 52 cm frames). The top tube bag mount makes mid-ride refueling easy, and the two Three-Pack mounts on the fork offer extra capacity for gear or water. The Cutthroat carbon fork has internal wire routing for dynamo hub lighting systems. Abrasion-resistant plates reduce frame and fork wear cause by mud and debris

  • Massive Tire and Mud Clearance

    Fits 29 x 2.4" tires, plus the mud you are likely to encounter in multi-day endurance races (and abrasion-resistant plates on the fork minimize the damage that mud can cause)

  • Road Boost Drivetrain

    2x mechanical-compatible using Race Face mountain boost cranks and Easton direct-mount chainrings (max 50/34t, complete bikes ship with 46/30t) and a road drivetrain in all other areas

  • Cutthroat Direct-Mount Frame Pack

    This pack mounts to the frame via thumb screws for tool-free attachment and removal. This also creates a streamlined look and prevents wear from strap rub. Made from waterproof fabrics and water-resistant construction, the Cutthroat Direct-Mount Frame Pack comes in five sizes to match Cutthroat frame sizing perfectly

  • Multiple Bottle and Cargo Carrying Options

    Capable of carrying four (52 cm frames) or five (54-60 cm frames) bottles with Three-Pack Mounts on the fork. Mounts for EXP Series Top Tube Bag and two accessory mounts on the underside of the downtube provide space for the Salsa Anything Bracket Mini or fuel, water bottle, or Salsa KEG. Cutthroat Direct Mount Frame Pack provides ample capacity across all frame sizes, and front and rear rack mounts offer endless options for carrying cargo

  • Rear Rack Compatible

    Accommodates the Salsa Wanderlust Rack (requires the Salsa Rack-Lock seatpost collar). Salsa Bent Rack Struts (part #RK8030) required for installation on 58 cm and 60 cm frames. Cutthroat V2 is not compatible with the Salsa Wanderlust HD Rack.

    Build Kit

    Frame Cutthroat Carbon
    Fork Cutthroat
    Color Blue
    Rear Shock N/A

    Front Derailleur Shimano RX810
    Rear Derailleur Shimano RX810
    Cassette Shimano HG700 11-34t, 11-Speed
    Chain Shimano HG601
    Crankset Race Face Ride (Easton 46/30t chainrings)
    Shifter Shimano RX600
    Brakes & Rotors Shimano RX600, Shimano RT64 rotors (160 mm)

    Headset Cane Creek 40 IS41/IS52
    Stem Salsa Guide
    Handlebar Salsa Cowchipper
    Grips/Bar Tape XL Anti-Slip Silicone Tape
    Seatpost Salsa Guide
    Saddle WTB SL8 Medium Steel SL

    Front Wheel Shimano MT400-B 15 x 110 mm hub, WTB ST TCS 2.0 i25 rim, 32h
    Rear Wheel Shimano MT400-B 12 x 148 mm hub, WTB ST TCS 2.0 i25 rim, 32h
    Tires Teravail Sparwood 29 x 2.2", 60 TPI, Tubeless-Ready, Durable Casing

    Bike Weight 24 lbs 5 oz for 56 cm

    Component Sizing

    Size 52cm 54cm 56cm 58cm 60cm
    Stem Length 60mm 70mm 80mm 80mm 90mm
    Crank Length 170mm 170mm 175mm 175mm 175mm
    Handlebar Width 44cm 46cm 48cm 50cm 52cm
    Seatpost Offset 18mm 18mm 18mm 18mm 18mm

    * Specification and pricing subject to change without notice
    Geometry Details

    Click for 2021 Cutthroat C GRX 600

    Setup & Instructions

    Click for Cutthroat Carbon V2 Custom Frame Bag Guide

    Click for ASTM Use Condition Chart (PDF)

Design Wheel x Tire Size:
29 x 2.25 (29 x 2.4" Max)"
Susp Fork Length (Travel):
506 mm (100 mm Travel)
Rigid Fork Length:
483 mm
Fork Offset:
51 mm
Front Spacing:
110 x 15 mm Thru-axle
Front Brake (Rotor):
Flat mount (160-180 mm) | flat mount frame standard (35 mm thickness) | 42 mm bolt length
Front Rack Mounts:
Yes | lowrider compatible. Salsa Down Under rack recommended.
Fork Accessory Mounts:
Yes | one set of Three-Pack mounts on each fork leg
Headset | Upper:
Headset | Lower:
27.2 mm
Seat Collar:
32.0 mm
Dropper Compatible (Routing):
Yes | internal
Front Derailleur Type:
Road | braze-on | 2x | bottom-pull
Bottom Bracket:
Press Fit BB92 | 41 x 92 mm
Crankset (Max & Min Ring):
1x MTN Boost: 40t Max; 2x RD Boost outer ring: 46-50t | inner ring: 30-36t *Oval chainrings subtract 2t from max*
Rear Brake (Rotor):
Flat mount (140-160 mm) | flat mount frame standard (25mm Thickness) | 32 mm bolt length
Rear Spacing:
148 x 12 mm Thru-axle
Rear Axle Size:
ø12 x 174 | TP=1.5 | TL=20
Derailleur Hanger:
QBP #FS2322
Rear Rack Mounts:
Yes | Salsa Rack Lock seatpost collar required. Salsa Wanderlust Rack recommended. Salsa Bent Rack Struts (part #RK8030) required for installation on 58 cm and 60 cm frames. Not compatible with Salsa Wanderlust HD Rack
Rear Fender Mounts:
Water Bottle Mounts:
Frames up to 54cm: 2 in main triangle. Frames 56cm and larger: 3 in main triangle.
Under Downtube Mount:
Yes | two pair.
Top Tube Mounts:
Yes | compatible with Salsa Top Tube bag.
Internal Dropper Post Routing:
1x mechanical drivetrain: Route the dropper post cable through the drive side of the down tube. Di2 drivetrains: Move the battery to the down tube | routing it through the head tube | then route the dropper post cable through the drive side of the do
External Dropper Post Routing:
1x and 2x mechanical and Di2 drivetrains: Route the dropper post cable through the dynamo rear light holes on the non-drive side of the top tube.