JIMS Manual Compression Release Valves

JIMS USA, founded 1967 in California, is a premier name in Harley-Davidson aftermarket precision. With deep roots in machining and V‑Twin racing, the brand offers everything from specialized tools and cooling systems to race-ready transmissions and complete engines. Known for U.S. manufacturing, ISO-certified quality, and racing pedigree, JIMS remains a top choice for pro mechanics, custom builders, and performance enthusiasts worldwide.