EK/PBR 520SRX2 Chain Kit 13/51 - Standard Sprocket
Designed for off-road use, this EK CHAIN SRX2 chain kit includes a chain, a 13-tooth sprocket, and a 51-tooth standard sprocket configuration. The SRX series offers a good balance between performance and cost, suitable for motocross riders who are replacing their transmission to regain predictable handling and controlled wear.
- Type: 520 Chain Kit (SRX2)
- Links: 114
- Pitch: 520
- Color: Gold/Gold
- Sprocket: Steel (standard)
- Weight: 1.54 kg / 100 links
- Durability Index (reference): 3300 (based on 100 links)
The gold finish facilitates visual wear detection and provides a neat aesthetic on enduro/cross machines. Classic installation: tension control, lubrication, and alignment adjustment are recommended during installation and regular maintenance to preserve the longevity of the kit.
Compatible with many off-road machines — including YAMAHA WR 250 F (2026), FANTIC XEF 310 (2025), and FANTIC XEF 250 (2025) — this kit is aimed at riders looking for a robust and easy-to-install replacement part.