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Bikeman Stage 4 Kit – Polaris Pro R Upgrade to 330HP

Sale price $8,695.95

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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):

  1. Manually rotate engine 10+ times clockwise
  2. Double-check cam timing, oil, and coolant
  3. Start and hold RPM above 2000 until engine hits 170°F
  4. Reduce RPM by 50 every 30 seconds until unstable
  5. Wait for idle to stabilize, then repeat step 4
  6. Let idle at 1450 RPM for 10–15 minutes
  7. 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.

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