EK/PBR 520SRX2 Chain Kit 13/50 — a chain + sprocket set 13/50 designed for motocross use. The SRX series combines robustness and a value-for-money ratio appreciated by off-road riders, featuring an "ultra-light" hard anodized aluminum sprocket to reduce unsprung mass without compromising durability against the demands of the terrain.
- Sprocket / sprocket: 13 / 50 teeth (13/50)
- Pitch: 520 (standard for amateur competition and enduro/motocross)
- Number of links: 116
- Sprocket material: Hard anodized aluminum (ultra-light)
- Chain color: Steel / Steel
- Weight: 1.54 kg for 100 links (reference)
- Relative lifespan: 3300 (for 100 links)
- Manufacturer reference: Not provided
This kit is aimed at motocross riders looking for a reliable and lightweight transmission to minimize rear wheel inertia. Compatible with many 250–300 cm³ off-road machines — cited example: GAS GAS EC 300 F (2013). Before installation, check the compatibility with your model and adhere to the recommended torque settings and tension adjustments to ensure optimal longevity.
