EK/PBR 520M3 Chain Kit 14/49 - Ultra-Light Sprocket by EK CHAIN: a transmission kit designed for motocross where every gram and every throttle response matters. This kit combines a 520 pitch chain and an ultra-light aluminum sprocket to reduce unsprung weight without sacrificing compatibility with competitive and recreational motocross bikes.
- Color: Gold/Gold — visible finish resistant to external aggressions
- Pitch: 520, length: 114 links (adjustable depending on installation)
- Sprockets: 14 teeth (front) / 49 teeth (rear) — gearing suited for motocross terrain
- Sprocket: ultra-light aluminum for improved rear wheel responsiveness
- Weight: 1.36 kg for 100 links (manufacturer reference)
- Relative lifespan: index 450 for 100 links (comparative value provided by the manufacturer)
Designed to withstand the demands of off-road riding, this transmission is aimed at KX250 riders (2000–2002) and other motocross machines compatible with the 520 pitch. To get the most out of the kit, regularly check the tension, clean and lubricate the chain after each muddy outing. Professional installation is recommended to ensure proper alignment and optimal longevity.