EK/JT 520M3 Chain Kit 13/50 - Ultra-Light Sprocket
Designed for the demands of motocross, this EK CHAIN kit combines a 520M3 chain with an ultra-light aluminum rear sprocket. Engineered to minimize friction while maintaining good tensile strength and abrasion resistance, it is aimed at riders looking for a lightweight and reliable transmission on challenging terrains.
- Format: 520 (pitch 520) — 13-tooth sprocket / 50-tooth sprocket
- Number of links: 118
- Color: Gold / Gold (chain and rivets)
- Sprocket material: Ultra-light aluminum, machined to reduce unsprung mass
- Weight: 1.36 kg for 100 links (manufacturer reference)
- Relative lifespan: Index 450 for 100 links
Classic installation and adjustment: check tension and lubrication after the first few kilometers. Ideal for the motocross universe and compatible with models such as KTM 250 SX / 250 SXS (2004). This kit provides a lightweight solution to reduce transmission inertia without sacrificing the strength needed for competition or training.
