
HOT CAMS Intake Camshaft – Stage 1 (Manufacturer's Ref: 4002-1IN)
Designed for Yamaha YZF/WRF 400/426 single-cylinder engines, this HOT CAMS Stage 1 intake camshaft features a profile tested on dynamometers and validated by competition teams. Stage 1 increases torque and power without requiring further modifications, making it ideal for a light upgrade aimed at making the bike more responsive on the track or during off-road outings.
Installation requires precise adjustment of timing and valve clearances. We recommend having the installation carried out by an experienced mechanic with the appropriate tools. Two complete sets of shims are provided for fine and secure adjustment.
Main compatibilities: