The EK/PBR 520SRX2 13/50 chain kit is designed for motocross riders looking for a reliable and lightweight transmission for their off-road outings. Coming from the SRX series, this reference combines a gold-treated chain and an ultra-light aluminum sprocket, suitable for the demands of muddy and rocky terrains without adding weight to the rear of the machine.
- Brand: EK CHAIN
- Manufacturer reference: Not specified
- Designation: 520SRX2 – 13/50 (sprocket/sprocket)
- Pitch: 520
- Number of links: 114
- Color: Gold / Gold (chain)
- Sprocket material: Aluminum (ultra-light)
- Relative lifespan: 3300 (for 100 links)
- Weight: 1.54 kg / 100 links
This kit is designed for enduro/cross machines: a 13-tooth sprocket and a 50-tooth sprocket provide a torque/acceleration compromise suitable for technical courses. The combination of treated chain and aluminum sprocket makes maintenance and replacement on the track easier. Check compatibility with your model before installation — frequent mounts: Yamaha WR 450 F (2018–2026).
