Designed in-house by Nukeproof, these jockey wheels for SRAM and Shimano derailleurs offer a significant upgrade over the standard-fitted jockeys. Available in 10, 11 and 12 speed, Nukeproof has an option to suit most current derailleurs. Manufactured from hard-wearing lightweight polyoxymethylene plastic with a stainless-steel bearing, these jockey wheels are designed for durability and longer service life. The unique narrow-wide tooth profile design also allows for better shifting and reduced noise from your drivetrain. The Shimano options have a longer tooth on the top sprocket to improve shifting, the lower jockey wheel has a shorter tooth profile to reduce noise and increase efficiency. The SRAM options have a specific narrow-wide profile to perfectly fit the chain providing a crisper shift, smoother drive train and reduced noise. Click here to view and download the Nukeproof Jockey Wheel Guide.