K-Series Skunk 2 PRO Series Valve Springs

K-Series Skunk 2 PRO Series Valve Springs

Model: 311-05-5380
Engines: K20A2, K20Z1, K20A3, K24A2, K20A3, K20Z3, K24A1-4, K24Z1
Cars: 02-06 RSX, 04-08 TSX, 02-05 Civic Si, 06+ Civic Si, 03+ Element

Designed to handle the demands of extreme-lift camshafts operating at prolonged, high-rpm use at championship-level racing, Skunk2’s Pro Series Valve Springs for Honda’s K-series engines are simply the best. Pro Series Valve Springs have been tested at speeds as high as 11,000 rpm on both the engine dyno and the street and our superior, Japanese-milled, super-clean chrome silicone wire is 100-percent eddy-current inspected prior to coiling and then heat-treated, shot-peened, and chemically polished for strength and durability. A special nitriding process concludes Skunk2’s rigorous manufacturing process. The end result is a lightweight valve spring that safely accommodates high-lift camshafts and features superior resistance to load loss, even under extreme operating conditions.

Skunk2 designs, develops, and tests its entire valvetrain lineup in-house to ensure superior quality and maximum performance gains. During development, each valvetrain component is tested both on the dyno and the road, including 11,000 rpm drag racing engines and 17,000 rpm superbikes. Manufactured from the best materials available, Skunk2 valvetrain components provide exceptional performance, reliability, and quality and remain standard-issue on each Skunk2 vehicle that we build and support.

Specs:
Engines originally equipped with single valve springs must use K-Series Spring Base Kit, available separately.
Seat Pressure: 70 lbs at 1.600”
Open Pressure: 230 lbs at 1.100”
Coil Bind: 0.870”