UTV Gear Reduction

    Portal boxes, gear reduction systems, and drivetrain modifications for torque multiplication and crawling capability.

    Gear Reduction Systems

    MST Motorsports installs and sets up UTV gear reduction for your tire size and terrain in Washington, Utah. Our factory-trained, certified technicians fit portal boxes and gear reduction kits to Polaris RZR XP, Can-Am Maverick X3 and Kawasaki KRX platforms for rock crawling and technical terrain. Larger tires also load the drive belt, which is covered in why UTV belts fail at Sand Hollow.

    Portal Box Systems

    Portal box installation for gear reduction, increased ground clearance, and lower crawl speeds.

    • Portal gear boxes
    • Increased ground clearance
    • Custom gear ratios

    Transmission Modifications

    Internal transmission modifications and gear ratio changes for optimized performance in specific applications.

    • Internal gear changes
    • Differential upgrades
    • Performance optimization

    Drivetrain Repair & Reinforcement

    Diagnostics, repair, and reinforcement of drivetrain components to handle the increased torque and stress from gear reduction systems.

    • Heavy-duty axles
    • Reinforced CV joints
    • Upgraded driveshafts

    Why Gear Reduction?

    Gear reduction systems provide significant advantages for technical riding

    Torque Multiplication

    Increased wheel torque for technical terrain

    Better Control

    Precise throttle control in challenging conditions

    Ground Clearance

    Portal systems add significant undercarriage clearance

    Capability

    Terrain that stock gearing could not handle

    Available Gear Ratios

    2.5:1

    Moderate Reduction

    Balanced performance for mixed terrain

    3.8:1

    High Reduction

    Serious rock crawling capability

    5.1:1

    Extreme Reduction

    Maximum torque for technical trails

    Gear Reduction Setup

    Tell us the machine, tire size and terrain, and we will spec the gear reduction setup to match.

    Related Services

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    Tire mounting, balancing, and wheel packages

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    Shock Repair, Rebuild & Service

    In-house shock repair, rebuild, and suspension service

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    Frequently Asked Questions

    A gear reduction kit lowers your UTV's final drive ratio, increasing torque at low speeds for rock crawling, technical terrain, and sand dune climbing. It trades top speed for more pulling power and better low-end control.

    For Sand Hollow dune riding, gear reduction improves launching power in deep sand and reduces clutch stress. Combined with a clutch tune, it can significantly extend belt life and improve performance in loose terrain.

    We install gear reduction systems on Polaris RZR XP, Can-Am Maverick X3, Kawasaki KRX, and other major UTV platforms. We'll recommend the right kit for your specific model and use case.

    A gear reduction install depends on the platform, the kit and whether the driveline needs supporting parts. We confirm the scope with you before the work begins.

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