EK CHAIN EK/PBR 520MRD7 13/49 - Ultra-Light Rear Sprocket Chain kitRef : EKC01526A / 3066034

EK CHAIN Kit 520MRD7 13/49 – ultra-light sprocket

Designed for off-road demands, this EK/PBR chain kit combines a high-performance 520 chain with an ultra-light aluminum sprocket. Ideal for motocross riders looking to minimize unsprung mass without sacrificing transmission strength, it is suitable for both training and amateur competition.

• Configuration: 13-tooth sprocket / 49-tooth sprocket
• Pitch: 520
• Number of links: 112
• Color: gold/gold
• Sprocket material: aluminum (ultra-light)
• Weight: 1.47 kg for 100 links (product reference)
• Relative lifespan: index 450 (for 100 links)

The gold finish makes it easy to visually spot wear and adds a polished look to your transmission. The aluminum sprocket reduces inertia for a livelier rear-end behavior, while the chain is treated to withstand abrasion encountered on tracks and trails. Classic mounting and adjustment — check tension and lubrication after the first hours and after each muddy outing.

Common compatibilities: suitable for YAMAHA YZ 250 F (CG27 2009, CG25 2006, CG21 2005) and other models using the 520 pitch and the specified number of links.