Bikeman Stage 4 Kit – Polaris Pro R Upgrade to 330HP
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Bikeman Performance Stage 4 Kit – Polaris Pro R 330HP
Unlock peak performance with the Bikeman Performance Stage 4 Kit, engineered to push your Polaris Pro R to an astonishing 330HP. This advanced performance package is built for serious power seekers, combining custom-tuned cams, CNC-ported Air Extreme head, oversized valves, and high-flow exhaust for race-level gains.
🔧 Included in Stage 4 Kit:
-
All-New Stainless Steel Slip-On Exhaust
Improves exhaust flow, enhances sound, and maximizes power output. -
CNC-Ported Air Extreme Head
Expertly machined for optimal airflow with +1mm intake and +4mm exhaust oversized valves. -
.430 Lift Custom BMP Cams
Precision-tuned for extreme throttle response and power gains across the RPM range. -
SNYPR Stage 1 Clutch Kit
Featuring heavy-duty weights and springs for improved belt tension and power transfer. -
Cyclone Clutch Cover
Keeps belt temps up to 30°F cooler—longer belt and clutch life guaranteed. -
Level 5 ECU Flash
Requires ECU to be mailed in; delivers fuel, ignition, and rev limit tuning for 330HP output.
🧠 Performance Gains:
- Stock: 230–235 HP @ 8400 RPM
-
Stage 4: Up to 331 HP @ 8975 RPM and 202 TQ @ 7050 RPM
Incredible low-end torque, aggressive midrange, and top-end boost.
⚠️ Important Notes:
- ECU must be mailed in for Level 5 flash – no Torque Link option for Stage 4.
- Cylinder head must be exchanged or purchased outright ($2400 core buyout).
- Head must include original, number-matching cam keepers or will be rejected.
- Head and keeper sets are precision-matched; unmatched sets will not be accepted.
🔄 Engine Start Procedure (Post-Flash):
- Manually rotate engine 10+ times clockwise
- Double-check cam timing, oil, and coolant
- Start and hold RPM above 2000 until engine hits 170°F
- Reduce RPM by 50 every 30 seconds until unstable
- Wait for idle to stabilize, then repeat step 4
- Let idle at 1450 RPM for 10–15 minutes
- Some throttle may be required for startup—normal for high-duration cams
🏁 Why Choose Stage 4?
- Adds up to 100 HP over stock
- Race-level performance with no compromises
- Durable parts designed for track and trail
- Proven results, expert tuning, and USA-crafted components
Give your Polaris Pro R the power it was built to unleash with Bikeman’s Stage 4 Kit—engineered for racers, tuned for results.















