The EK/JT 520M3 13/50 chain kit with ultra-light sprocket is designed for motocross riders looking for a lightweight, reliable, and easily maintainable set. Created by EK CHAIN, this kit combines a 520 pitch chain and a lightweight aluminum sprocket with 50 teeth, paired with a 13-tooth front sprocket — a common setup for 125cc machines and demanding motocross bikes.
- Type: 520 chain kit (13/50)
- Number of links: 114
- Color: Gold / Gold (chain and sprocket)
- Sprocket material: Ultra-light aluminum
- Weight: 1.36 kg for 100 links
- Relative lifespan: 450 (reference 100 links)
The aluminum sprocket reduces unsprung mass for a livelier rear-end behavior, while the gold-finished chain provides good abrasion resistance on muddy and sandy terrains. This kit is aimed at motocross practitioners who perform regular maintenance (tension and lubrication) and seek a cohesive solution for sprocket/chain combination.
Notable compatibility: YAMAHA YZ 125 (1995 - 125 cc). Manufacturer reference: Not provided.
