Description
If you’re serious about extracting maximum performance from your YZ250F, the Hot Cams Exhaust Camshaft 4271-1E is a foundational upgrade that rewires your engine’s breathing characteristics. This Stage 1/2-configurable cam directly improves throttle response and power delivery across the RPM band—delivering the kind of measurable gains that show up on the track. Whether you’re building a race-ready setup or refining an existing platform, this is the cam spec that separates competitive machines from the rest.
- Yamaha YZ250F 2014-2016
- MPN: 4271-1E
- Hot Cams Improved Throttle Response (ITR)
- Stage 1 torque optimization
- Stage 2 peak horsepower tuning
- Mid-range power enhancement
- Top-end RPM capability
- Builder Series platform
- Racing-grade durability
- Bolt-on installation
- Precision-engineered profile
- OEM-spec reliability









