The EK/PBR 520MRD7 14/49 chain kit - ultra-light sprocket brings together the essential components to equip a motocross machine ready to handle jumps and the demands of the terrain. Designed by EK CHAIN, this kit combines a 520 chain and an ultra-light aluminum sprocket to minimize unsprung weight without sacrificing the durability needed for off-road use.
- Color: Gold/Gold, polished finish for a racing look
- Pitch: 520, suitable for classic motocross transmissions
- Ratio: 14 tooth front / 49 tooth rear
- Number of links: 114
- Sprocket: Ultra-light aluminum, reduced inertia
- Weight: 1.47 kg for 100 links
- Relative lifespan: 450 (reference given for 100 links)
Designed for the motocross world, this kit offers a responsive acceleration and a racing aesthetic thanks to its gold hue. Ideal for riders seeking a balance between lightness and strength, it fits many competitive 250 cc models — notably the KAWASAKI KX 250 (1997 and 1998 models). Classic plug-and-play installation on 520 bases; follow the recommended adjustments and maintenance to maintain performance and longevity of the transmission.
