The MRT® Rocky RX Nycore Radial UTV / SXS Rock and Crawler Tire is a rock crawler design for serious grip!
Nycore™ Strength. Two High Performance Compounds. Built to Conquer Everything.
The MRT® Rocky RX™ Off-Road UTV Tire is the ultimate evolution in rock crawling technology. Engineered for drivers who thrive on vertical climbs and jagged terrain, the Rocky RX™ combines a specialized sticky compound with MRT’s innovative Nycore™ belted construction. This is the tire for UTV enthusiasts who demand elite-level grip without sacrificing the structural integrity needed for high-horsepower machines.
Extreme Performance Features
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Nycore™ Belted Construction: Advanced 8-ply radial design reinforced with Nycore™ technology for superior puncture resistance and a lighter weight-to-strength ratio than traditional belts.
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Specialized Rock Compounds: Available in Medium (55 Duro) for trail versatility or Super Sticky (50 Duro) for maximum adhesion on slick rock and steep inclines.
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Deep Lug Performance: A robust 22.5/32" tread depth provides massive mechanical keying into uneven surfaces, ensuring you never lose your line.
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Optimized Footprint: Designed to maintain maximum contact patch at low PSI, providing the stability and maneuverability required for technical crawls.
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Competition-Ready Traction: The Rocky RX™ is purpose-built to handle the torque of modern high-horsepower UTVs from Polaris, Can-Am, and more.
Rocky RX™ Construction and Specifications
Featuring 8-ply radial construction and Nycore™ belted reinforcement, this tire is exceptionally tough yet engineered to remain agile. With a massive 22.5/32" tread depth and a design optimized for larger SXS models, it delivers pure confidence. Every Rocky RX™ is backed by MRT’s 1-Year Sidewall Warranty for peace of mind on the trail.
Dominance on the Rocks
From the boulders of Johnson Valley to the slick rock of Moab, the MRT® Rocky RX™ is designed to stick and climb. Its race-bred "Sticky" compound resists slipping on smooth surfaces while the Nycore™ belts protect against sidewall pinches and sharp debris. Whether you are a weekend adventurer or a competitive crawler, the Rocky RX™ provides the armor and traction your machine deserves.
Experience the edge that off-road experts trust: the Rocky RX™ isn’t just a tire—it’s a performance upgrade for your entire drivetrain. Read about MRT tires dominating at NORES 12-Hour Endurance Race!
Rocky RX™ Key Features & Performance Highlights
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8-Ply Nycore™ Belted Radial provides a robust carcass that resists punctures and supports off-road abuse while maintaining a flexible contact patch.
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Super Sticky (50 Duro) Option offers professional-grade traction for competitive rock crawling environments.
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Medium (55 Duro) Option delivers a balanced, longer-wearing compound for enthusiasts who mix technical crawling with fast trail riding.
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Aggressive Sidewall Lugs provide additional side bite for pulling through deep ruts and protecting the wheel rim.
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Directional Tread Pattern provides optimum forward bite.
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NHS Rated for off-road use only.
Choose your correct tire size and compound from the dropdown menu to elevate your off-road experience!
PLEASE NOTE: Tire only, wheel NOT included! Double check your tire size before ordering to ensure accuracy when ordering your new tires!
Rocky RX™ Available Sizes and Specifications
| Size |
Compound |
Durometer |
Ply |
Tread Depth (IN) |
Weight (LBS) |
Construction |
Warranty |
| 32x10R15 |
Medium |
55 |
8 |
22.5/32 |
45.6 |
Nycore™ Belted |
1-Year Sidewall |
| 32x10R15 |
Super Sticky |
50 |
8 |
22.5/32 |
45.6 |
Nycore™ Belted |
1-Year Sidewall |
| 35x10R15 |
Medium |
55 |
8 |
22.5/32 |
54.8 |
Nycore™ Belted |
1-Year Sidewall |
| 35x10R15 |
Super Sticky |
50 |
8 |
22.5/32 |
54.8 |
Nycore™ Belted |
1-Year Sidewall |
| 37x11R15 |
Medium |
55 |
8 |
22.5/32 |
58.0 |
Nycore™ Belted |
1-Year Sidewall |
| 37x11R15 |
Super Sticky |
50 |
8 |
22.5/32 |
58.0 |
Nycore™ Belted |
1-Year Sidewall |
