RK EXCEL GB420MXZ4-134 Gold 420 x 134 Drive Chain for ATV and Off-Road Models

EXW was designed to handle ATV swingarm movement and increased torque stresses and wears 1.7 times longer when compared to O-ring chains. EXW chains also feature special thermal crack resistant sideplates to protect against thermal cracking. Thermal cracking can result from debris or components impinging the chain’s movement. The impingement causes the chain to quickly heat up and cool down in rapid succession. Over a period of time this thermal exposure can reduce the strength of the chain and/or cause a chain failure. It is vitally important to check your bike after a crash to make sure no debris or bike components are in contact with the chain.

The RK EXCEL GB420MXZ4-134 is a gold 420-size drive chain engineered for ATV and off-road applications up to 750cc. With 134 links, this chain is designed to accommodate the movement of ATV swingarms while handling increased torque and demanding riding conditions. Its EXW construction provides approximately 1.7 times the wear life of comparable O-ring chains, helping deliver dependable service over extended use.

Special thermal crack-resistant side plates help protect the chain from damage caused by rapid heating and cooling. Thermal cracking can occur when debris or motorcycle components contact the chain during operation, potentially reducing chain strength and contributing to failure. Always inspect the chain and surrounding components after a crash or impact to confirm that nothing is interfering with chain movement.

The RK EXCEL GB420MXZ4-134 includes a clip-type master link for installation. A rivet-type master link is available separately. This chain is not recommended for street use and should be installed and maintained according to the vehicle manufacturer’s specifications. Verify chain size, link count, clearance, and application compatibility before installation.

Manufacturer and vendor part number: GB420MXZ4-134. Brand: RK EXCEL. Model: EXW. Application: ATV and off-road vehicles rated up to 750cc.

Features:

• Size: 420 chain with 134 links
• Model: EXW
• Brand: RK EXCEL
• Manufacturer part number: GB420MXZ4-134
• Vendor part number: GB420MXZ4-134
• Application: ATV and off-road use up to 750cc
• Tensile strength: 7,700 pounds
• Construction: Special thermal crack-resistant side plates
• Wear life: Designed to last approximately 1.7 times longer than comparable O-ring chains
• Master link: Clip type included; rivet type available separately
• Chain width: Maximum 0.87 inches
• Weight: 3.70 pounds
• Street use: Not recommended