HOT Cams 4012-1IN Camshaft - Intake - Stage 1 - for Yamaha

• Adds 5%-10% power gain
• Designed and dyno proven in the USA
• Engineered by utilizing state-of-the-art valvetrain software
• CNC machined from 8620 billet, case hardened steel for an exact fit and lobe profile
• Select cams feature Hot Cams Improved Throttle Design (ITR) technology; these cams improve throttle response throughout the entire rpm range while providing excellent power gains through the mid-range and top-end

For low end torque.

Made to be drop-in cams that use stock valve springs (unless noted).

Increases bottom and mid range power for improved throttle response.

For dual cam engine.

Intake Valve Lash: 0.150 mm.