Valve springs - single & reinforced - JPM

Single and reinforced valve springs JPM

These valve springs developed by JPM can be set up on every Type 1 cylinder head or Type 4 cylinder head slightly modified. The valve springs are made from thermally processed shot peened OTEVA material. These steel springs are also used for NASCAR engines.

• Inner diameter: 23,6 mm
• Outer diameter: 32 mm
• Spring pressure 39,6 mm install height 50,4 kg
• Spring pressure 25,4 mm install height 103,3kg
• Compressed height: 20,4 mm