Speedwerx ECU Tunes with Launch Control // 2022-2027 Polaris 850 Patriot Boost (VR1 / Assault / RMK)

Speedwerx ECU Tunes with Launch Control // Polaris 850 Patriot Boost

• Speedwerx ECU tune plus a launch control / anti-lag harness for Polaris 850 Patriot Boost models
• Stage 2.5: 213.6 hp with the Speedwerx L2 muffler on 91 non-oxy pump gas
• Stage 4: 259.0 hp with the L2 muffler on 110+ octane race gas
• Stage 5: built for VP C14 116 octane race gas
• Developed with the Speedwerx L2 muffler; clutching must be calibrated to match (Hypershift clutch kit recommended)
• Your ECU is shipped to Speedwerx for programming, or self-flash with an EZ LYNK Auto Agent 3 and power-up adapter (sold separately). Existing tunes can't be upgraded to launch control.

Currently on backorder from Speedwerx; we'll confirm lead time when you order. Speedwerx part # ECU-POL850T-LC. Intended for closed-course competition use.

Not sure what fits your sled? Email kyle@freshiesbuilt.com with your year, make, model and track length.