Wolf Tooth Shimano GCs replace a cog on compatible SRAM 10-speed cassettes in order to provide extra low range for your 1x drivetrain.
- Compatible only with the following SRAM 11-36 and 12-36 cassettes: PG-1030, 1050, 1070 and the XG-1080
- Remove the 14T cog on the XG-1080 instead of the 17T
- SRAM GC42s are not compatible with 2011 or older SRAM rear derailleurs
- Compatible only with the following SRAM 10 Speed Cassettes: X5 11-36T (PG-1030), X7 11-36T (PG-1050), X9 11-36T (PG-1070), X0 11-36t(XG - 1080) - Remove the 14t rather than the 17t
- Per Wolf Tooth, the GC 42 is not compatible with 2011 or older SRAM rear derailleurs due to the position of the upper jockey wheel. The best ways to tell the vintages of your rear derailleur is 1) If you have a type 2 (clutch type) rear derailleur it is 2012 or newer and 2) the upper jockey wheel on 2012 and newer rear derailleurs are offset from the derailleur cage's axis of rotation.Wolf Tooth does not recommend using the GC 42 if you have a pre-2011 SRAM 10-speed mountain derailleur
Manufacturer Wolf Tooth
Manufacturer Part Number BLKGC40SRAM
UPC 812719020466
Model Wolf Tooth SRAM GC Cog
Defined Color
Black
Tooth Count
40
Intended Cassette Compatibility
SRAM
Cassette Body Type
Shimano/SRAM 8, 9, 10 Speed
Drivetrain Speeds
10
Usually Ships in 2-3 Days
Please Note: This product is usually available for shipment within 2 business days for orders placed before 3pm EST, Monday through Friday or within 3 business days for orders placed after 3pm EST, Monday through Friday. Contact for in-store availability, not all items are available for immediate pickup. If we are unable to meet these time frames due the rapid changes in revolving inventory you will be contacted via email. We do not not automatically partial-ship orders; the delivery time of your order is determined by the item on your order with the longest lead time. If your order is time sensitive we encourage you to contact us for up to the minute product availability and ship times to verify that we can accommodate your needs. Refer to our Shipping Terms for more information.
Please Note: This product is usually available for shipment within 2 business days for orders placed before 3pm EST, Monday through Friday or within 3 business days for orders placed after 3pm EST, Monday through Friday. Contact for in-store availability, not all items are available for immediate pickup. If we are unable to meet these time frames due the rapid changes in revolving inventory you will be contacted via email. We do not not automatically partial-ship orders; the delivery time of your order is determined by the item on your order with the longest lead time. If your order is time sensitive we encourage you to contact us for up to the minute product availability and ship times to verify that we can accommodate your needs. Refer to our Shipping Terms for more information.