EK/PBR 520MRD7 13/51 Chain Kit - Ultra-Light Sprocket
This chain kit is designed for motocross riders seeking a clear and lightweight transmission. This EK CHAIN kit combines a 520 MRD7 chain in gold finish with an ultra-light aluminum sprocket (51 teeth) paired with a 13-tooth pinion — a common choice for enduro/cross bikes where the weight/performance ratio matters. It is designed to be mounted on machines like the YZ 250 F and other 250cc models compatible with the 520 pitch.
- Type: 520 chain kit (chain + 13-tooth pinion + 51-tooth sprocket)
- Chain: 114 links, Gold/Gold finish
- Pitch: 520
- Sprocket: Ultra-light aluminum
- Weight: 1.47 kg for 100 links (manufacturer value)
- Relative lifespan: 450 (reference for 100 links)
- Manufacturer reference: Not provided
This kit provides a significant weight reduction at the sprocket level, which is useful for improving handling and responsiveness out of corners. To keep the transmission effective, follow maintenance recommendations: proper tension, regular lubrication, and link checks before each ride. Ensure compatibility with your model before installation.
