Primary Clutch Spring for Polaris Patriot Boost (Trail Sled Only) - 170-300 // SKU: 05-170-300

SKU: 05-170-300
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$27.95 USD
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Primary Clutch Spring (170-300) for Polaris Patriot Boost Trail Sleds // SKU: 05-170-300

IMPORTANT FITMENT NOTE: Designed specifically for Polaris Patriot Boost Trail Sleds ONLY (Indy Boost, Switchback Boost, VR1 Boost). Will NOT fit RMK mountain models.

Dial in your engagement RPM and hold target shift power with the Bikeman Performance 170-300 Primary Clutch Spring for Polaris Patriot Boost trail snowmobiles. The primary spring plays a critical role in controlling initial clutch engagement and managing how your primary clutch shifts out under high boost pressure on wide-open trail runs.

Featuring a 170 lb initial load and 300 lb finish load, this spring delivers snappy, positive engagement while providing the exact force needed to hold peak engine RPM without over-revving or fading. Manufactured from premium high-tensile spring steel, it resists heat sag and fatigue through severe trail abuse, ensuring consistent power transfer all day long.

Key Performance Features

  • Trail Boost Calibration: Specifically engineered to complement the horsepower curve and clutching needs of short-track and crossover Patriot Boost trail models.

  • 170-300 Spring Rate Profile: 170 lb initial load sets crisp engagement, while the 300 lb finish load holds target shift RPM under full boost.

  • Holds Peak Power: Prevents RPM sag and belt slippage on long, high-speed trail stretches for maximum top-end performance.

  • High-Tensile Alloy Steel: Built from high-grade spring steel designed to withstand extreme thermal stress, vibration, and rapid compression cycles without losing tension.

Product Specifications

  • SKU: 05-170-300

  • Compatibility: Polaris Patriot Boost Trail Sleds ONLY (Indy Boost, Switchback Boost, VR1 Boost)

  • Fitment Exclusion: Does NOT fit RMK mountain models

  • Spring Rate: 170 lb Initial Load / 300 lb Finish Load

  • Component Type: Primary Drive Clutch Spring

  • Primary Function: Controls engagement RPM and manages primary clutch shift-out / peak RPM