RK Chain 520EXW-100FT 520 Series XW-Ring Off-Road ATV Chain 100-Foot Bulk Roll

The RK Chain 520EXW is a premium XW-Ring sealed chain engineered for extreme off-road and ATV performance. Sold as a convenient 100-foot bulk roll, this chain is ideal for shops, dealers, and serious riders who need the ability to cut custom lengths for any application. The 520EXW is one of RK's most popular ATV-rated chains, trusted by professional off-road racers around the world.

Advanced XW-Ring Seal Technology

The XW-Ring seal is constructed from an advanced Nitrile Butadiene composite featuring three contact lips and two convex outer stabilizers. This design creates three separate lubrication pools that protect against high-speed abrasion, extreme heat buildup, torsional flex, and lubricant loss. The Nitrile Butadiene material is both oil and contaminant-resistant, while the XW seal geometry is compression and distortion-resistant — delivering maximum efficiency with no O-ring drag.

Key Features:

• XW-Ring sealed construction — triple barrier grease protection plus anti-debris technology
• Tensile strength: 8,500 lbs
• Max Wear Life Index: 1,000 (100 is standard) — wears 1.7x longer than O-ring chains
• Pin length: 20.8mm
• Weight: 3.36 lbs per 100 links
• Thermal crack-resistant sideplates protect against rapid heat cycling caused by debris impingement
• Rated for up to 750cc off-road motorcycles and ATVs
• Master link type: Clip (rivet-style master link sold separately)
• Natural (steel) finish
• 100-foot bulk roll — can be cut to any required length

Designed to handle ATV swingarm movement and elevated torque stresses, the 520EXW excels in the harshest conditions including desert, woods, enduro, and GNCC-style racing. RK has been manufacturing motorcycle chains since 1953 and serves as an OEM supplier to Honda, Suzuki, Yamaha, Kawasaki, and other major manufacturers. Note: The 520EXW is not recommended for street use.