Supertech Performance SPRK-M1007D-2 Dual Valve Spring 100 @ 39.6 SPR-M1007D + RET-M65/STD + SEAT-M1007 + Valve seal VS-H6.6

Supertech Performance SPRK-M1007D-2 Dual Valve Spring 100 @ 39.6 SPR-M1007D + RET-M65/STD + SEAT-M1007 + Valve seal VS-H6.6

Supertech Spring / Retainer kits are precision matched sets for a complete valvetrain overhaul. Developed for the performance enthusiast that wants the best the industry has to offer, Supertech Spring / Retainer kits are second to none in terms of performance, quality and value.