Bullet-proof your Pro R secondary clutch with EVP's STM Tuner Secondary Clutch calibrations dialed in specifically for customers running an EVP P54 Pro R Turbo System! The EVP calibrated STM Tuner Secondary is a must-have upgrade to get the absolute most out of any Pro R running at the P54-400, P54-450 & P54-500 horsepower levels and avoid OEM clutch failure.
- Calibrated specifically for EVP P54 Pro R Turbo Systems (EVP TAPP Primary also required)
- All-billet construction for added durability and reliability
- Finned secondary design provides more airflow for lower belt and clutch temps
- Includes secondary spring
- Includes helix
- Additional spring rates and helix angles available directly through STM
The EVP calibrated STM Tuner Secondary is a must-have upgrade to get the absolute most out of any Pro R running at the P54-400, P54-450 & P54-500 horsepower levels and avoid OEM clutch failure.
Features include all-billet construction and a finned design that creates more airflow within the clutch housing to help lower belt and all-around clutch temperatures. Additional features include significantly enhanced belt grip, STM's triple roller design for consistent up/back shifts that are smoother and faster, and improved engine braking, among others.
All EVP STM Tuners come fully assembled and include a secondary spring and helix spec'd to EVP's custom calibrations, as well as hardware kit for installation (additional spring rates and helix angles are available directly through STM).
