RPM Gen 4 Ski-Doo 850 Stainless Snowmobile Race Weight Silencer 2017-22 Etec Rev

Drop maximum weight and sharpen throttle response with RPM’s Stainless Steel Race Weight Performance Muffler for Gen 4 Ski-Doo 850 E-TEC snowmobiles! Engineered specifically for mountain riders, drag racers, and backcountry powder hounds seeking maximum performance, this ultra-lightweight race exhaust sheds a massive 11+ lbs off the front chassis while unlocking an immediate +3 horsepower gain and razor-sharp throttle response.

Constructed from heavy-duty, corrosion-resistant 304 stainless steel, this 4" compact muffler body connects directly to the factory OEM expansion chamber with zero modifications required. It delivers an aggressive, high-revving 2-stroke exhaust note that cuts through mountain air—making it ideal for open mountain terrain, closed-course racing, and backcountry riding where light weight and instant power delivery are top priorities.

Installation is 100% bolt-on with no clutching, ECU re-flashing, or fuel tuning needed.

Performance Metrics & Weight Savings:

• Horsepower Gain: +3 HP Increase

• Muffler Unit Weight: 5.0 lbs

• Total Chassis Weight Savings: Sheds 11+ lbs compared to the heavy stock muffler

• Sound Profile: Light & Loud — High-output, aggressive race tone

• Clutching / Tuning Required: None (Direct bolt-on and go)

Installation & Sensor Wiring Note:

⚠️ FITMENT & INSTALLATION NOTE:

• Sensor Port Extension Wiring: The included EGT sensor port wiring extension is required ONLY for Ski-Doo Summit models. Do NOT use the sensor extension harness on MXZ or Renegade models.

Features:

• +3 HP Performance Gain: Optimizes exhaust gas velocity to improve power delivery and deliver crisp, instant throttle response.

• Sheds 11+ lbs of Front Weight: Drastically lightens the nose of your snowmobile, making side-hilling, carving, and boondocking effortless.

• 4" Compact Stainless Body: Built from high-grade 304 stainless steel to handle high exhaust heat, severe vibration, and wet snow pack.

• Aggressive Race Exhaust Tone: High-energy exhaust note engineered for maximum performance output in backcountry and race environments.

• Direct OEM Expansion Chamber Fit: Connects seamlessly to the stock expansion chamber using factory spring locations.

• Zero ECU Tuning Required: Runs safely and cleanly on factory fuel maps and clutching setups without requiring a tuner.

What's Included:

• (1) RPM SXS 4" Stainless Steel Race Weight Muffler Assembly

• (1) EGT Sensor Wire Extension Harness (Used for Summit models only)

• (1) Complete Mounting Hardware Pack

• (1) Detailed Step-by-Step Installation Guide

Fitment:

Direct bolt-on replacement for Gen 4 chassis Ski-Doo 850 E-TEC snowmobile models:

• Ski-Doo Summit 850 E-TEC (Gen 4 Chassis): 2017–2022

• Ski-Doo Freeride 850 E-TEC (Gen 4 Chassis): 2017–2022

• Ski-Doo MXZ 850 E-TEC (Gen 4 Chassis): 2017–2022 (Do not use sensor extension)

• Ski-Doo Renegade 850 E-TEC (Gen 4 Chassis): 2017–2022 (Do not use sensor extension)