STM Tuner Secondary Clutch for 2022+ Polaris RZR Pro R

DESCRIPTION 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). For best results, EVP recommends running the STM Tuner Secondary Clutch with our variety of EVP-Spec TAPP Primary Clutch Calibrations, AVAILABLE HERE. Calibrated specifically for EVP P54 Turb