4PCS 520HV 520 Chain Master Link,Chain Connector Links with O-Ring

Key features

• Chain Compatibility: Engineered to match standard 520HV / ANSI #520 roller chain specifications. Perfectly fits most motorcycles and dirt bikes with 520-size chain setups, ensuring precise assembly.
• Durible Material: Crafted with premium metal reaching 520 HV hardness. It delivers excellent tensile strength & wear tolerance, standing up to frequent shifting,high-speed riding&rough road friction.
• O-Ring Sealing: Built with flexible rubber O-rings at every joint to form tight gaps. The sealed structure blocks dust, mud and water ingress, protecting internal pins & bushings from daily abrasion.
• Smooth Transmission: Uniform link spacing maintains stable chain tension, enabling efficient power delivery with minimal energy loss. It improves engine response during acceleration, climbing.
• Package Contains: Features a user-friendly snap-on design for simple replacement. Each package contains 4 master connecting links(1.18"×0.91")to support chain repair and backup needs.

Free shipping included. 30-day hassle-free returns.