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Jims Manual Compression Release Valves

Item: 402709

$124.53

Universal Fit: Review specifications carefully.

In Stock

Jims Manual Compression Release Valves


These release valves make starting your engine effortless by venting cylinder compression with just the push of a button. Jims has found these to be indispensable when used with Jims Stroker Kits or any other high-performance engine kit. Simply drill and tap each cylinder head and thread in the self-sealing release valves.

  • Give your starter a hand by installing these in your high-compression, big-inch motor
  • Simply drill and tap a 10mm x 1.0 hole in the appropriate place on each cylinder head and thread in the self-sealing release valves
  • Sold in pairs
  • Made in the USA
Specification Details
Country of Origin USA
Quantity 2
Thread M10 x 1.0

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