EK/PBR 520MRD7 Chain Kit 13/51 - Standard Sprocket
Designed for motocross use, this EK CHAIN kit combines a 520 chain and sprockets tailored to the demands of off-road riding. Gold/gold finish for a racing look and protection against superficial corrosion, components mounted to transmit power on muddy, rocky, or sandy terrains.
- Type: 520 chain kit (chain + 13-tooth sprocket + 51-tooth standard sprocket)
- Number of links: 114
- Pitch: 520
- Color: Gold / Gold
- Sprocket material: Steel
- Weight: 1.47 kg for 100 links (reference)
- Relative lifespan: 450 (value given for 100 links)
Ideal for motocross riders seeking a robust and easy-to-maintain transmission. The steel sprocket/crown set ensures good abrasion resistance while the 520 pitch chain remains a widely used standard for motocross machines. Check the number of links and the spacing before installation or adaptation on a modified motorcycle.
Notable compatibility: YAMAHA YZ 250 F (models 2009, 2012, 2013) — to be confirmed according to equipment and previous modifications.