
PROX Steel Intake Valve Conversion Kit - Kawasaki (manufacturer part number: 28.SIS4336-2): a set designed for engine preparation and maintenance for motocross machines. Designed by PROX, a recognized brand in engine parts, this kit includes steel intake valves intended to replace worn components on compatible cylinder heads.
This kit is aimed at riders and mechanics looking for a reliable solution for off-road circuit distribution. The steel valves offer mechanical durability suited to the demands of motocross and represent, according to PROX, a good compromise between performance and reliability without requiring significant structural modifications to the engine.
For a successful installation, have valve seats and guides checked, and consult a professional for installation if necessary. Replace parts according to manufacturer recommendations and perform sealing checks and timing adjustments after installation.