





Key (Valve Lock) JIMS - ref. 1370
Set of 8 half-moons designed to securely hold the spring cup on the valve stem. Machined from selected materials and then heat-treated according to strict JIMS standards, these half-moons feature a 10° angle and integrate perfectly with JIMS titanium valve spring cups. Made in the USA.
Ideal for Vintage/Classic, Touring, and Roadster builds, this set is suitable for the mentioned Harley cylinder heads and other setups requiring standard profile half-moons. A part intended for enthusiasts looking for a robust solution for valve assembly: installation, maintenance, or cylinder head refurbishment, these half-moons are essential components of the valve train retention.