Renthal R1 Works Chain 520
MSRP: $89.95
$71.96
Exact Fitment Guarantee
The Renthal R1 Works 520 Chain is a premium, high-strength non O-ring motocross chain engineered to deliver maximum power transfer, exceptional tensile integrity, and minimal rotating weight for competitive closed-course racing. Designed to replace standard OEM chains that stretch rapidly during initial motos, the R1 Works chain combines shot-peened alloy steel link plates with high-precision components to withstand the violent shock loads produced by modern high-horsepower four-stroke and two-stroke racing engines.
The R1 Works chain features chamfered inner link plates that reduce the chance of chain derailment under heavy swingarm flex and improve chain guide tracking over rough braking bumps. The alloy steel pins are heat-treated with an advanced induction hardening process, creating a wear-resistant outer surface that resists elongation while absorbing hard landing impacts without snapping. The gold-anodized side plates deliver outstanding corrosion resistance while giving your race machine a clean factory works look. Rated at an impressive 7,644 lbs tensile strength, the R1 provides unbeatable lightweight driveline performance.
- Chain Pitch: 520 Pitch (Standard 5/8" pitch x 1/4" roller width)
- Construction: Non O-ring competition lightweight race chain
- Tensile Strength: 7,644 lbs (34.0 kN)
- Pin Engineering: Induction-hardened alloy steel with shot-peened link plates
- Link Chamfering: Precision chamfered inner link plates for smooth guide engagement
### Step-by-Step Installation & Safety Protocols Installation requires a chain cutter tool, pliers, and a master link press tool. Route the chain through the front countershaft sprocket, swingarm rub guard, and rear chain guide. Align the chain ends on the rear sprocket teeth. Lubricate the master link pins with quality grease, slide the master link through from the wheel side, install the outer side plate, and secure with the spring clip. Verify that the closed end of the spring clip points in the direction of forward chain rotation. Adjust chain tension using the axle blocks so that you have approximately 3 fingers (50-55mm) of chain slack at the center of the swingarm. Torque the rear axle nut to factory specification (typically 100-110 Nm).
### Maintenance & Sprocket Pairing Maintenance includes cleaning the chain with a nylon brush after every track day, drying with compressed air, and lubricating with Renthal Chain Lube. Replace the chain alongside new sprockets to maximize driveline longevity.
Frequently Asked Questions
Q: Can I use the Renthal R1 chain for trail or desert riding?
A: While the R1 is exceptionally strong, it is a non-sealed competition chain intended for closed-course motocross. For long-distance desert or mud/trail enduro riding where chains cannot be cleaned frequently, a sealed chain like an X-ring or O-ring is recommended.
Q: Why is it important to replace sprockets when installing a new chain?
A: Installing a new chain onto worn sprockets (which have hooked or shark-finned teeth) causes the new chain to mesh improperly, accelerating chain wear and wearing out the new chain in just a few rides.
Q: What master link is supplied with the Renthal R1 Works chain?
A: The R1 Works chain includes a standard clip-type master link with gold side plates for easy installation and maintenance.
Q: How do I measure chain stretch on the Renthal R1?
A: Measure the distance across 20 chain pins with a vernier caliper under tension; if the measurement exceeds the service limit on the Renthal spec sheet, replace the chain.