EK/PBR 520M3 Chain Kit 14/50 - ultra-light sprocket: a set designed for motocross practices where the weight/strength ratio matters. The 520M3 chain by EK CHAIN combines a golden finish and reinforced design to limit friction while providing good resistance to tension and abrasion. The ultra-light aluminum sprocket reduces unsprung mass for a livelier handling of the bike.
- Brand: EK CHAIN
- Type: Chain kit (chain + 14-tooth sprocket + 50-tooth sprocket)
- Pitch: 520
- Number of links: 116
- Color: Gold / Gold
- Sprocket material: Aluminum (ultra-light)
- Weight: 1.36 kg for 100 links (manufacturer reference)
- Durability index (for 100 links): 450
Designed to equip motocross machines, this kit is aimed at riders looking for a reliable and lightweight chain for intensive track use. Compatible with models like the KTM 350 XC‑F (2012, 350 cm³), it allows for a more responsive acceleration due to the reduction of unsprung mass. Be sure to follow the installation torque and regular maintenance (tension, lubrication) to maximize the longevity of the final drive.