ASF Machine high-RPM valve spring kit, Subaru EJ25 SOHC (EJ251 / EJ253)

ASF Machine's high-tension valve spring kit for single overhead cam Subaru EJ25 builds (EJ251 and EJ253). It drops in and handles aggressive cam profiles with up to 12.7 mm of valve lift.

• No machine work needed to install, and it suits most of the camshaft regrind profiles on the market
• Springs: wound from high-grade chrome silicon alloy
• Retainers and spring seat locators: machined from billet chromoly steel, then hardened so they hold up against shearing and deformation
• Seat pressure: 78 lb at the stock installed height

Kit contents: 16 valve springs, 16 retainers and 16 spring seats.

Specs and fitment: High-RPM valve spring kit, ASF part number ASF-EJ25S-VSK. For Subaru EJ251 and EJ253 SOHC engines, with cam lift up to 12.7 mm. Call 970-242-0919 to confirm fitment for your build.