DESCRIPTION

NEW EVP TAPP CLUTCH UPDATES (2024):

• Roller spider design reduces friction in the movable sheave for faster, smoother engagement and improved belt grip.
• Center bearing with black nitrate coating adds hardness, resists corrosion, and lowers friction.
• Larger roller increased from 2mm to 3mm for improved bearing longevity under high load.
• Post strengthened and heat-treated to prevent clutch slip on the shaft when over-torqued.
• Moveable sheave reinforced with added material for greater load capacity.
• Billet clutch cover has larger windows to accept extra weight without modification.

KEY FEATURES (CONDENSED):

• Calibrations cover stock through EVP Dynomite (DM) and Desert Storm (DS) turbo upgrades.
• Calibrated for use with the EVP STM Tuner secondary clutch or OEM secondary with EVP internals (Shift-Tek Helix and Spring).
• Kits include a full standard weight kit plus tungsten TAPP Clutch Race Weights (set of 8).
• Billet and high-tech materials for cooler operation, better belt life, and durability across riding styles.
• Adjustable: swap two-sided ramps, external clickers, and add/remove mass via roller arms.
• Smooth ramp-based operation for reduced vibration and quick throttle response.

Disclaimer: EVP Calibrated TAPP primaries may require minor calibration changes. See instructions or contact tech support.

NOTES FOR 2021 XP Turbo/S:

• To remove the OEM P90X primary clutch use the EVP Clutch Puller For Polaris RZR Turbo R, Pro XP and '21 XP Turbo/S (P/N 875FP0010).
• To remove the TAPP primary from 2021 XP Turbo/S use the RZR XP Turbo/S Clutch Puller Tool (P/N 875FP0004).

FITMENT

2016+ RZR XP Turbo & Turbo S (all models)

CALIBRATION GUIDE

There are 4 main adjustable components in an EVP Spec TAPP Clutch:

• Ramp Profile — Pre-chosen ramps provided. Changing profile affects shift behavior; recommended only for experienced tuners.
• Ramp Angle — Adjust via Quick Shift Bolts. Higher number = higher RPM. Always adjust in pairs across from each other to avoid imbalance.
• Roller Size — Supplied with a predetermined size. Available: standard, 1mm oversize, 2mm oversize. Change in pairs; mismatched sizes can cause imbalance.
• Weight Adjustment — Use set screws in the arms and washers on the roller thru bolt. Add weight to lower RPM; remove to raise RPM. Adjust evenly in pairs to prevent failure.

INSTRUCTIONS

Manufactured by Evolution Powersports. Official specs and resources: EvoPowersports.com.

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