KIT
EVP TUNE
ENGINE POWER LEVEL
USE
ST-205
17-21 STAGES 1-3R, 2020RR STAGE 1
190-205 HP
SAND OR TRAIL
ST-225
17-21R STAGES 3RWI-5RWI, 2020RR STAGES 2-3
205-220 HP
SAND OR TRAIL
ST-235
17-21 STAGE 4RWI-X85, 2020 RR STAGES 3R-3RWI
210-235 HP
SAND OR TRAIL
ST-250
2020 RR STAGES 4RWI-X85
235-250 HP
SAND OR TRAIL
ST-275
2017-2021 DYNOMITE & DESERT STORM 
250-275 HP
SAND OR TRAIL
ST-320
2017-2021 DYNOMITE & DESERT STORM 
275-320 HP
SAND OR TRAIL
 
 
The EVP Shift-Tek line of clutching packages and components consist of technology originally developed for racing where adjustability and versatility play a key role to winning success. Clutching changes are necessary to keep the power in the proper RPM range and with our innovative billet helix design, adjusting the RPMS is a very simple 5-minute job for the racer or enthusiast. Our Shift-Tek clutch kits include our custom geometry weights which improve the overall shift making them quicker to react and deliver the power. Also included are proprietary primary spring and some kits a secondary spring as well. The EVP primary spring helps raise the engagement RPM for use with our Launch Control setup.  Additionally, as heavier, more aggressive weights are added for high HP applications, generally the engagement rpm will drop which is solved with our primary spring.  Our billet helixes are each custom tailored specifically for your X3 power level and riding style.  Due to the unique design features and adjustability built into each Shift-Tek clutch kit, getting it dialed in for different riding conditions (trail and sand) is a simple task.
All Kits Include:
Primary Spring
6 Arm Weights
Billet Adjustable Helix w/ billet bearing housing
Non-Marring tip for the OEM belt changing tool
Billet sheave/belt holder to help adjust the billet helix
Detailed instructions for proper setup for most tire selections and riding styles.