Description
The HOT CAMS Exhaust Camshaft 4166-2EX is engineered to unlock measurable gains in both torque and horsepower across your YZ450F’s entire powerband. If you’re running this bike in competitive racing or serious trail riding, this Stage 1/Stage 2 upgrade delivers the throttle response and mid-range punch that separates winners from the rest of the field. Built with Hot Cams’ proven Improved Throttle Response (ITR) technology, you’ll feel immediate improvements in acceleration and top-end power delivery.
- Yamaha YZ450F fitment
- Model years 2010-2013
- MPN: 4166-2EX
- Exhaust camshaft only
- Stage 1 torque focus
- Stage 2 peak horsepower
- ITR technology equipped
- Precision CNC-machined
- Full RPM range optimization
- Bolt-on installation
- Racing-grade durability
- Competitive edge proven
