Skunk2 Pro Series Valve Springs offers high-quality, race-proven dual valve springs - the product of nearly two decades of Skunk2 racing and engine building experience. This lightweight valve spring kit (set of 16) is designed to accommodates high-lift camshafts and provide unparalleled resistance to load loss. These high-quality Pro Series Valve Springs will prevent valve float and maintain optimal valvetrain stability at engine speeds in excess of 11,000 rpm! If you're looking for the best valve springs available on the market today, you cannot afford to miss Skunk2's Pro Series XP Racing Valve Springs! Order yours today - you'll not regret it!

Skunk2 Pro Series XP Racing Valve Springs are made from super-clean, chrome-silicone wire that is milled in Japan. The kit utilizes inner and outer springs mated together through a slight interference fit and with differing frequencies. The Pro Series XP Racing Valve Springs outstanding springs are wound by a premier North American winder, resulting in unparalleled improvement to the extreme fatigue limit of the wire and enhanced resistance to load loss.

Pro Series XP Racing Valve Springs are can handle the demands of extreme-lift camshafts operating at prolonged, high-rpm use at championship-level racing. Each Pro Series XP Racing Valve Spring comes tested at speeds exceeding 11,000 rpm on Skunk2's engine dyno, street, and the race track. The superior, Japanese-milled, super-clean chrome silicone wire is 100-percent eddy-current inspected prior to coiling. What's more, the Pro Series CP Racing Valve Springs are heat-treated, shot-peened, and chemically polished for strength and durability. A special nitriding process concludes Skunk2's rigorous manufacturing process.

• Seat Pressure: 100 lbs at 1.600"
• Open Pressure: 255 lbs at 1.100"
• Coil Bind: 0.890"
• Max Lift: 0.680"

Skunk2 was founded in 1994 in Northern California. Since then the company's goal has been to engineer the highest quality aftermarket parts for today's sport compact vehicles. Today, Skunk2 continues its tradition of innovation by introducing several new engine components.