EK/JT 520MRD7 12/50 Chain Kit - Ultra-Light Sprocket by EK CHAIN, designed for motocross. This kit combines a high-performance 520 chain and an ultra-light aluminum sprocket to reduce unsprung mass without compromising the strength required on the tracks. Gold finish for a racing aesthetic that matches both vintage and modern machines.
- Usage: Motocross / competition
- Pitch: 520
- Number of links: 112
- Color: Gold / Gold
- Sprocket material: Aluminum (ultra-light)
- Weight: 1.47 kg for 100 links
- Life index: 450 (for 100 links)
- Manufacturer reference: not provided
Designed to minimize friction while offering good resistance to traction and abrasion, this chain kit is aimed at riders looking to lighten the rear of the motorcycle while maintaining reliable transmission on rough trails and repeated jumps. Compatible with models such as the YAMAHA YZ 125 (1984-1985), it provides a polished look and components aligned with off-road requirements.
