EK/PBR 520M3 Chain Kit 13/50 - Ultra-Light Sprocket by EK CHAIN, designed for motocross outings and riding days where weight and reliability matter. This kit combines a 520 pitch chain with an ultra-lightweight aluminum rear sprocket, aimed at riders who want a compact, easily maintained transmission suitable for off-road conditions.
- Configuration: 13/50 (13-tooth front sprocket / 50-tooth rear sprocket)
- Number of links: 114
- Pitch: 520
- Color: Gold/Gold
- Sprocket Material: Aluminum (ultra-light version)
- Weight: 1.36 kg for 100 links
- Relative lifespan: index 450 (for 100 links)
Designed to minimize friction while maintaining good tensile strength and abrasion resistance, this transmission will suit demanding motocross and enduro machines. Standard installation and maintenance: checking tension, regular lubrication, and inspecting tooth wear allow for optimal use of the kit. Compatible with listed 250 models (e.g. FANTIC XXF 250, YAMAHA YZ 250 F / YZ 250 FX) depending on gearing adaptation.
