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Ultimate Chain Retention

The Wolf Tooth GnarWolf Chainguide rev2 is designed for maximum chain retention for mountain biking, extreme gravel, and particularly rough CX races. It is compatible with most bikes using 1x drivetrains that have an ISCG-05 mount and round and oval chainring sizes 28-34T.

Simple Adjustability

The base of the GnarWolf allows for the vertical adjustment necessary for differing chainring sizes, while the GuideLock Quick Adjustment System moves the chainguide head to accommodate chainlines from 45-51mm. Adjusting the GuideLock Quick Adjustment System requires just a 4mm hex to operate an expanding elliptical mandrel to move the head securely into place without the use of shims.

We believe in your right to be able to fix your components. Crashes happen, parts get misplaced, things go bump in the night. All individual pieces of GnarWolf Chainguide are available individually as replacement parts, just like other Wolf Tooth components that have multiple pieces.


100% user serviceable

Service for the GnarWolf Chainguide is easy and can be done at home. A 4mm hex key is the only tool required for installation and adjustment.


Replacement Parts Available

Each of the eight components of the GnarWolf Chainguide can be purchased individually. If something breaks in a crash, save money by replacing just the affected part instead of an entire assembly.

Replacement Parts navigate_next

The GnarWolf Chainguide ISCG-05 rev2 is designed for maximum chain retention while mountain biking or racing particularly rough gravel and CX. It is made for any bike that has ISCG-05 mount and a 1x drivetrain. The GnarWolf Chainguide will keep your chain on your chainring in the roughest and muddiest of conditions. Refer to image on this page for installation and adjustment instructions.  

  • 8mm of chainline adjustment via our GuideLock quick adjustment system. No shims required.

  • Infinite vertical adjustment between 28 and 36T for round chainrings and  28-34T oval chainrings

  • Loosen one screw to flip the guide out of the way for easy chain removal without losing any of the guide's adjustments

  • All adjustments made with common 4mm hex key

  • Designed for the rigors of Enduro, heavy trail, mud and even DH riding, the Wolf Tooth engineers made this guide extremely stiff and strong while keeping it light at 44g

  • Specific guide shaping is optimized for use with oval and round chainrings

  • Installation takes just a few minutes – no need to remove your crank arms


  • Designed to fit on any bike with an ISCG 05 Mount
  • Installation shown in photos on this page
  • Optimized for use with both elliptical and round chainrings
    • Round chainrings 28-36T or oval chainrings 28-34T
  • For 1x drivetrain use only
  • Minimum distance of 10mm between crank and center of ring
  • Not compatible with crankset-mounted bashrings
  • Due to frame and bike geometry, there will be some bikes that need modifications or flat out won't work. Here are the known exceptions:
    • Ibis Mojo 3 - will not work
    • Ibis Ripmo - will not work
    • Ibis Ripley - will not work
    • Specialized Stumpjumper 2016-2017 models require 1 mm of spacers (washers will work) between the frames ISCG05 mounts and the guide (the guide interferes with the frame otherwise).
    • Evil The Following - will not work (upper swing arm interferes)
    • Santa Cruz Tallboy & Nomad  - will not work


Related Products

Drop-Stop® chainrings

Right To Repair

Tech Specs

Weight:  46g
Material: 6061-T6 with stainless steel hardware, glass-filled nylon head
Made in the USA
US Patent 10464635

  WARNING Handling this product will expose you to chemicals, including lead, known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For further information go to www.P65Warnings.ca.gov.

    Patent and trademark information