StarknightMT Heavy Duty Drive Belt for Polaris Ranger RZR Sportsman — Replaces 3211113/19G3982, Aramid Reinforced, Heat-Resistant

The StarknightMT Heavy Duty Drive Belt (3211113 / 19C3982) is a reinforced replacement belt engineered to prevent slipping, reduce noise, and withstand heat for Polaris Ranger, RZR, and Sportsman ATVs and UTVs.

If your Polaris vehicle has been losing power, slipping under load, or creating excess noise, a high-quality replacement belt can restore dependable performance on trails and workdays. The StarknightMT belt is designed to fit multiple Polaris models and replaces OEM numbers 3211113 and 19G3982. It pairs aramid cord reinforcement with a multi-layer construction that focuses on strength, grip, and longevity.

Which Polaris models does this belt fit?

This belt is manufactured to match the dimensions and performance of OEM part numbers for a broad range of Polaris machines. It fits Ranger midsize and crew variants, several years of Sportsman ATVs, and the RZR 800 EFI, covering common trail and utility models.

• Replaces OEM: 3211113 and 19G3982
• Compatible with: Ranger 500 Midsize Crew (2011–2013) and Ranger 500 Midsize (2006–2012)
• Fits: RZR 800 EFI (2008–2014) and Sportsman 450, 500, 570, 700, 800

How does this belt resist slipping and maintain power delivery?

The StarknightMT belt combines a high-friction nylon surface with a reinforced aramid cord to preserve grip under heavy loads and aggressive throttle. This construction increases friction where the belt contacts the sheaves, preventing the loss of drive that causes sluggish acceleration and overheating.

• Nylon fiber layers increase surface grip
• Aramid cord core resists elongation and breakage
• Consistent power transfer under towing or steep terrain

What makes this belt durable in heat, grease, and rough use?

Durability comes from a chloroprene rubber compound and a four-layer build that stands up to the heat and contaminants common in off-road use. Those materials slow wear and protect the internal reinforcement so the belt keeps its shape and performance over longer service intervals.

• High-strength chloroprene resists heat and oil exposure
• Four-layer design minimizes uneven wear and edge fraying
• Fabric-wrapped tooth surfaces reduce abrasion and noise

Will installing this belt reduce noise and vibrations?

Yes. The belt’s multi-layer configuration and fabric-wrapped contact surfaces are specifically chosen to lower belt slap and whine. Riders should notice a smoother, quieter drivetrain compared with lower-quality aftermarket belts.

• Wrapped nylon fabric on both contact faces for noise damping
• Balanced construction reduces vibration under varying RPMs
• Stable power delivery limits sudden jerks or surges

Who is this for: The StarknightMT Heavy Duty Drive Belt is aimed at Polaris owners who need a reliable, longer-lasting replacement for OEM 3211113 or 19G3982. It’s a practical choice for off-road enthusiasts, utility riders, and fleet operators who want stronger heat resistance, better grip under load, and reduced drivetrain noise without changing pulleys or other components. If you regularly tow, ride steep or rough terrain, or want to avoid mid-ride failures, this belt offers an upgrade in durability and consistent power delivery.