EK/PBR 520MRD7 13/50 Chain Kit - Ultra-Light Sprocket by EK CHAIN is a kit designed for motocross riding where every gram and every link matters. This transmission, in Gold/Gold finish, combines a robust 520 chain with an ultra-light aluminum sprocket to minimize unsprung weight without compromising tensile strength and abrasion resistance.
- Pitch: 520
- Tooth Count: 13/50
- Number of Links: 114
- Color: Gold/Gold
- Sprocket Material: Aluminum (ultra-light)
- Weight: 1.47 kg / 100 links
- Relative Lifespan (100 links): 450
Designed to withstand the demands of the terrain, this chain minimizes friction while providing resistance to abrasion encountered in competition and intensive training. The aluminum sprocket reduces peripheral weight for a more responsive rear end — useful on jumps and tight corners.
Compatible with many motocross machines equipped with a 520 setup and a 13/50 ratio, it is particularly suitable for Suzuki RM-Z 250 (2021–2023). For optimal longevity, replace the entire chain/sprocket kit simultaneously and adhere to the recommended tension adjustment and lubrication.
Manufacturer Reference: Not provided
