Hotcams admission - Level 1 CamshaftRef : HO00022A / 1006452

HOT CAMS Intake Camshaft - Level 1 (manufacturer part number: 4012-1IN) designed for Yamaha YZ250F. Designed for motocross riders who want to enhance engine response without heavy modifications, this Stage 1 optimizes torque delivery and usable power for daily trail/cross use and amateur competition.

Developed and tested on dynamometers and validated by racing teams, this intake camshaft replaces the original part to improve engine performance while remaining compatible with a configuration close to stock. Ideal for minor tuning and for those looking to enhance engine responsiveness without other major modifications.

Key points:

• Usage: motocross / amateur competition.
• Stage 1 — increases torque and power without other modifications required.
• Supplied: two complete sets of shims for precise timing and valve clearance adjustment.
• Installation: requires mechanical skills and appropriate tools; professional installation recommended.

Main compatibilities: YAMAHA WR 250 F (CG30), YAMAHA YZ 250 F (CG33), YAMAHA YZ 250 F (CG27). Before installation, check the part numbers and perform a careful timing adjustment to get the best performance from this camshaft.