Pro-X 28.SIS6329-2 Steel Intake Valve and Spring Kit drive-bearings-seals-bearing-carriers 1997-1999 Buell S3T Thunderbolt

1997-1999 Buell S3T Thunderbolt

2000 Yamaha YFM400 Big Bear 4x4

Includes assembled flywheels with shafts and instructions

Tough nylon outer shell protects expensive shields

2015-2017 Sea-Doo RXT 260

Pro-X 28.SIS6329-2 Steel Intake Valve and Spring Kit drive-bearings-seals-bearing-carriers 1997-1999 Buell S3T ThunderboltReplaces the OEM valves & valve springs. Steel, nitrided valves for increased durability and less wear under extreme conditions. Stronger valve springs deal with the extra weight of the steel valves. Springs are made from premium chrome vanadium steel for higher performance and durability at high rpm. Kit contains a set of steel intake or exhaust valves plus a set of specially designed valve springs; can be installed using the OEM retainers, bases and