MCS Retaining Rings

90 products — part of all Retaining Rings

MCS retaining rings and snap rings for Harley-Davidson cover decades of drivetrain assembly requirements, from early XL Sportster transmissions through to modern Softail and Touring builds, giving mechanics and home builders a single reliable source for these critical fastening components. The MCS range spans XL Sportster models from the early 1971 through 2022 production run, as well as Softail, Dyna, FLT Touring, and the XR1200, ensuring that whether you are overhauling a vintage five-speed or rebuilding a six-speed Touring drivetrain, the correct retaining ring specification is available. Available through Iron City Motorcycles, an authorised Harley-Davidson dealer in Leeds, MCS retaining rings are manufactured to exact dimensional specifications, providing reliable snap and retention in high-stress transmission and primary assembly applications. Proper fitment of retaining rings is essential to prevent component migration in service, and MCS parts meet the factory Harley-Davidson tolerances needed for safe, long-lasting assembly. These are the small components that hold major assemblies together — getting the specification right matters. Browse the full MCS Retaining Rings range below.