Part No. 56-C333.IN.STG1 (oro2u.com)
YAMAHA YZ450F 2014 - 2015,
Hot Cams Stage 1 Intake Cam - 4278-1IN
Extract maximum performance from your engine Hot Cams provide increased intake and exhaust duration for improved breathability and more horsepower

Provides significantly more mid-range punch and top-end speed for most models Core trade-in not required so you can keep the original camshaft Compatible with most models stock valve springs and rockers Adjustable cam sprockets come with some models
Cam Description: Stage 1 ITR: Dual cam engine. Intake and exhaust cams sold separately. Excellent low to midrange

increase. Uses stock valve springs.