Clutch Kit
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STM Primary Clutches Polaris RZR Pro XP Clutch Kits Heavy Duty Clutches CVT Clutch System for Off-Road Vehicles Clutch Kits for UTVs Clutch Kits for Side by Sides Clutch Kits for ATVs Aftermarket Assassins Clutch Kits

If you’re looking to boost the performance of your ATV, UTV, or Side by Side, upgrading your clutch system is one of the most effective ways to enhance acceleration, power transfer, and overall ride quality. Whether you’re outfitting a Polaris RZR Pro XP, Can-Am Maverick X3, or another powerful machine, choosing the right clutch kit can make all the difference. In this guide, we’ll dive deep into the best clutch options for CVT-equipped vehicles, including STM Primary Clutches, STM Secondary Clutches, and Aftermarket Assassins clutch kits.

What is the Role of Clutch Kits in ATVs, UTVs, and Side by Sides?

The clutch system in your ATV, UTV, or Side by Side is responsible for transferring power from the engine to the wheels, ensuring smooth acceleration and consistent power delivery. In a CVT (Continuously Variable Transmission) system, the primary and secondary clutches work together to control the gear ratios, maintaining optimal engine RPM and adjusting to driving conditions. Proper clutch tuning ensures improved performance, increased durability, and better fuel efficiency—whether you're cruising on dirt trails or navigating tough off-road environments.

Why Clutch Kits Matter for Off-Road Vehicles

Upgrading your clutch system offers multiple benefits:

  • Improved Acceleration: A new clutch kit can offer quicker throttle response and smoother power delivery.
  • Enhanced Durability: Aftermarket clutch kits, especially heavy-duty versions, are built to last longer under extreme conditions.
  • Custom Performance: Tuning the clutch kit to match your riding style or specific vehicle demands (like towing or racing) maximizes overall efficiency and power.

STM Primary and Secondary Clutches for Precision Tuning

For off-road enthusiasts looking for superior performance, STM Primary Clutches and STM Secondary Clutches are the go-to choice. STM kits are designed to enhance your vehicle's power transfer, making them ideal for aggressive off-roading, mudding, or racing.

STM Primary Clutch: Boosting Acceleration and Power Delivery

The STM Primary Clutch plays a critical role in controlling engine RPM and ensuring smooth engagement. By upgrading to an STM Primary Clutch, you can achieve:

  • Smoother Engagement: Reduces jerky starts and ensures a more controlled takeoff, especially in tricky terrain.
  • Optimized Power Transfer: Delivers consistent power across varying RPM ranges, improving acceleration and maintaining high-speed performance.
  • Better Belt Life: STM clutches reduce excessive wear on your drive belt, extending its lifespan and reducing maintenance needs.

STM Secondary Clutch: Ensuring Smooth Shifting and Load Handling

The STM Secondary Clutch is designed to complement the primary clutch and provide better load handling and gear shifting:

  • Increased Load Capacity: The secondary clutch is engineered to handle more load, improving power delivery when carrying heavy loads or navigating rough terrains.
  • Reduced Belt Slippage: STM Secondary Clutches help minimize belt slippage, keeping your drivetrain operating at peak performance.
  • Improved Durability: Built to withstand extreme conditions, STM Secondary Clutches are ideal for riders who demand high performance under heavy use.

Polaris RZR Pro XP Clutch Kits: Tailored for Power and Performance

The Polaris RZR Pro XP is known for its impressive performance capabilities, and pairing it with the right clutch kit can take your off-roading experience to the next level. Whether you need more power for racing, towing, or climbing, there’s a clutch kit designed specifically for your needs. Here is a little about the Polaris RZR Pro XP Clutch Kits.

Polaris RZR Pro XP S4 Clutch Kit: Heavy-Duty Power for Extreme Adventures

For the most demanding rides, the Polaris RZR Pro XP S4 Clutch Kit provides exceptional performance. This kit is designed to handle extra weight and power demands, making it perfect for:

  • Rock Crawling: Offering better low-speed control and smoother engagement when tackling steep, rocky trails.
  • Heavy Towing: Ideal for carrying loads or hauling gear across rugged terrains.
  • Optimized Acceleration: Increases throttle response for more aggressive riding.

Polaris RZR Pro XP S3 Clutch Kit: Perfect for Aggressive Off-Roaders

The Polaris RZR Pro XP S3 Clutch Kit is great for riders who frequently push their vehicle to its limits in varied terrain conditions. Features include:

  • Enhanced RPM Control: Ensures smooth power delivery during quick acceleration or deceleration.
  • Improved Responsiveness: Great for faster throttle engagement when navigating through rough trails.
  • Versatile Performance: Perfect for off-road riders who want to tackle everything from deep mud to steep inclines.

Polaris RZR Pro XP S2 Clutch Kit: Balanced Performance for Versatile Riding

For those who want balanced performance across various terrains, the Polaris RZR Pro XP S2 Clutch Kit offers:

  • Responsive Shifting: Ensures a smooth transition between gears, ideal for mixed riding conditions.
  • Durability: Built to withstand everyday off-road use while providing improved performance over stock kits.

Polaris RZR Pro XP S1 Clutch Kit: Entry-Level Upgrade for Stock Riders

The Polaris RZR Pro XP S1 Clutch Kit is perfect for those who want an affordable upgrade to their stock clutch system. It offers:

  • Slight Performance Boost: Ideal for riders who need enhanced acceleration and better power transfer without overhauling their stock setup.
  • Easy Installation: A straightforward choice for those new to clutch upgrades.

Aftermarket Assassins Clutch Kits: A Performance Game-Changer

For enthusiasts seeking top-tier performance, Aftermarket Assassins clutch kits deliver incredible power and durability. Designed for extreme off-roading, these kits are perfect for riders looking to enhance their vehicles for heavy-duty use or racing.

Aftermarket Assassins Stage 3 Clutch Kit: Maximum Performance for Hardcore Riders

The Aftermarket Assassins Stage 3 Clutch Kit is designed for riders who demand the highest level of performance. Ideal for heavy-duty off-roading and racing, features include:

  • Top-Tier Acceleration: Maximizes throttle response and power delivery for competitive racing or challenging terrains.
  • Heavy-Duty Materials: Built to endure the harshest conditions and withstand high RPMs.
  • Increased Load Capacity: Handles extreme conditions such as rock crawling, deep mud, and towing with ease.

Aftermarket Assassins Stage 2 Clutch Kit: Ideal for Aggressive Off-Roading

The Aftermarket Assassins Stage 2 Clutch Kit is perfect for riders who frequently ride in tough conditions but don’t need the full power of the Stage 3 kit:

  • Better Performance Across Varied Terrains: Provides smooth shifting and better power transfer for aggressive riders.
  • Enhanced Durability: Built to handle off-roading in a wide range of conditions without sacrificing performance.

Aftermarket Assassins Stage 1 Clutch Kit: Reliable and Affordable for Recreational Riders

For the recreational rider, the Aftermarket Assassins Stage 1 Clutch Kit provides reliable performance at an affordable price. Features include:

  • Smooth Engagement: Enhances throttle response and acceleration for casual off-roading.
  • Easy Installation: Ideal for users looking for a straightforward upgrade from their stock clutch.

Heavy Duty Clutches for Extra Durability and Performance

If you regularly push your ATV, UTV, or Side by Side to its limits, upgrading to Heavy Duty Primary and Secondary Clutches can help prevent premature wear and tear while ensuring long-lasting durability.

Heavy Duty Primary Clutch: For Extra Power and Tough Conditions

A Heavy Duty Primary Clutch is essential for riders who frequently encounter challenging off-road conditions:

  • Increased Load Handling: Ideal for towing, carrying heavy loads, or navigating rough trails.
  • Enhanced Durability: Designed to withstand higher stresses and loads, ensuring your clutch performs well under extreme conditions.

Heavy Duty Secondary Clutch: Improving Power Transfer and Performance

The Heavy Duty Secondary Clutch ensures:

  • Smoother Gear Transitions: Helps eliminate belt slippage and maintains power delivery during tough riding conditions.
  • Higher Load Capacity: Perfect for those who demand more from their off-road vehicles.

Conclusion: Choosing the Best Clutch Kit for Your ATV, UTV, or Side by Side

Upgrading your clutch kit is one of the best ways to enhance the performance of your ATV, UTV, or Side by Side. Whether you choose STM Primary and Secondary Clutches, Polaris RZR Pro XP-specific kits, or Aftermarket Assassins kits, each option provides distinct benefits tailored to your riding style. By selecting the right clutch system, you'll not only improve your vehicle’s acceleration and throttle response but also extend the life of your drivetrain, allowing you to conquer even the toughest off-road challenges.

To find the perfect clutch kit for your vehicle, head to Dig Rig Powersports and get started today!