Supertech Performance SPR-H1005D/GTIR Dual Valve spring 84 @ 35mm SPR-1005D/GTIR + RET-NSR20/T1 + Factory Seat

Supertech Performance SPR-H1005D/GTIR Dual Valve spring 84 @ 35mm SPR-1005D/GTIR + RET-NSR20/T1 + Factory Seat

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.