The JIMS Precision Valvetrain Component is a pair of silver‑finished compression‑release valves engineered for street‑oriented machines. Designed for the primary starter system, these manual‑style valves provide the exact timing control required for reliable engine start‑up, integrating seamlessly with existing valvetrain and cylinder‑head assemblies.
Built to JIMS’ precision standards, the component delivers consistent release pressure and repeatable performance under street riding conditions. The manual compression‑release mechanism allows riders to fine‑tune engine response without the complexity of electronic systems, ensuring a straightforward upgrade that maintains the original character of the machine.