Evolution Powersports performance tuning upgrades for the 2025+ Polaris RZR Pro S deliver massive power gains and enhanced responsiveness. The Stage 5-X85 tune improves 0-60 mph times from 5.63 seconds stock to 3.94 seconds, with additional horsepower gains across all tune stages.
Tune Features:
- Massive wheel horsepower gains
- Speed limiters raised in high and low gear
- Rev limiters raised in high and low gear
- Torque limits raised for enhanced responsiveness
- Race Start/No-Brake Start no need to press the brake to start vehicle
- Revised fan temperature settings significantly lower coolant temperatures
- Improved boost response and low-to-mid range power
- Left-foot braking enabled (gas and brake at the same time without going into limp mode)
- Fueling corrected so no additional controllers are required
- More aggressive throttle and overall throttle response
- Big Injector tunes include EVP 1300CC Injectors (set of 2) and EVP Wastegate Actuator
Recommended Upgrades: Upgrade to EVP Silicone Charge Tubes and V-Flow Intake, as plastic OEM units are susceptible to blowouts. Additional recommended components include BOV or BRV, high-flow exhaust, clutch kit, and spark plugs.
Stock Injector Power Flash Stages:
| Stage | Fuel Type | Boost Pressure | WHP | Crank HP | Required Parts |
|---|---|---|---|---|---|
| Stock | 91 | 17 lbs | 164 | 181 | N/A |
| Stage 2-91 | 91 | 18.5 lbs | 176 | 215 | N/A |
| Stage 3-93 | 93 | 20 lbs | 185 | 226 | Gap spark plugs to .018 or purchase pre-gapped plugs |
| Stage 3-96 | 96 | 22 lbs | 193 | 235 | Gap spark plugs to .018 or purchase pre-gapped plugs |
Big Injector Power Flash Stages:
| Stage | Fuel Type | Boost Pressure | WHP | Crank HP | Included Parts |
|---|---|---|---|---|---|
| Stage 2RWi-91 | 91 | 18.5 lbs | 178 | 217 | 1300cc Injectors, Wastegate Actuator |
| Stage 3RWi-93 | 93 | 20 lbs | 187 | 228 | 1300cc Injectors, Wastegate Actuator |
| Stage 3RWi-96 | 96 | 22 lbs | 194 | 237 | 1300cc Injectors, Wastegate Actuator |
| Stage 4RWi-110 | 110 | 26 lbs | 205 | 250 | 1300cc Injectors, Wastegate Actuator |
| Stage 5RWi-X85 | E85 | 26 lbs | 211 | 257 | 1300cc Injectors, Wastegate Actuator |
Big Injector Note: In addition to included 1300cc Injectors and Wastegate Actuator, Big Injector Tunes also require upgraded BOV or BRV, Charge Tubes, high-flow exhaust, clutching, gapped spark plugs, EVP V-Flow Intake, and World's Best Belt.
Fitment: 2025+ Polaris RZR Pro S
Tuning Disclaimer: This tuning product is intended for off-road and competition use only unless otherwise stated. Installation and use may affect emissions compliance, vehicle performance, durability, and warranty coverage. Buyer is responsible for verifying fitment, intended use, and compliance with all applicable local, state, and federal laws before installation or operation.
Fits The Following Vehicles
- 2027 RZR Pro S
- 2026 RZR Pro S
- 2025 RZR Pro S
