Description
If you’re running a CRF450R, upgrading to the Pro Circuit T-4 slip-on exhaust is one of the most straightforward ways to unlock measurable horsepower gains and sharpen throttle response. The engineered reduction in back pressure translates directly to better mid-range power and top-end pull—gains you’ll feel immediately on the trail. Combined with its lightweight construction and aggressive acoustic signature, the T-4 delivers the performance edge serious riders demand without compromise.
- Fitment: Honda CRF450R 2005+
- Type: Bolt-on slip-on
- Construction: High-grade materials
- Weight: Lightweight profile
- Airflow: Optimized design
- Back pressure: Reduced
- Sound: Deep, aggressive tone
- Spark arrestor: Removable
- Installation: Quick, simple
- Compliance: EPA-compliant
- MPN: 4H05450









