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.
Select the clutch kit from the dropdown below that corresponds to the engine power level of your X3.
KIT | EVP TUNE | ENGINE POWER LEVEL | USE |
ST-205 | 17-21R STAGES 1-3R, 2020RR STAGE 1 | 190-205 HP | SAND OR TRAIL |
ST-225 | 17-21R STAGES 3RWI-5RWI, 2020RR STAGES 2-3 | 205-225 HP | SAND OR TRAIL |
ST-235 | 17-21R STAGE 4RWI-X85, 2020 RR STAGES 3R-3RWI | 210-235 HP | SAND OR TRAIL |
ST-250 | 2020 RR STAGES 3BI, STAGE 4X100-X85 | 235-250 HP | SAND OR TRAIL |
ST-275/280 | 2017-2021 DYNOMITE & DESERT STORM | 250-280 HP | SAND OR TRAIL |
ST-310/320 | 2017-2021 DYNOMITE & DESERT STORM | 310-320 HP | SAND OR TRAIL |
ST-325 | 2017-2021 DYNOMITE | 320-325 HP | SAND OR TRAIL |