Renthal Aluminium Ultra-Light Self-Cleaning 123U - 520 SprocketRef : RT00077A / 1075610010

RENTHAL Ultra-Light Mud-Resistant Sprocket 123U - 520

Designed for demanding riders, this RENTHAL sprocket is machined from 7075 T6 aluminum to provide an optimal balance between lightweight and durability. Its specific tooth profile facilitates mud evacuation and minimizes chain snags in muddy terrain, while strategic cutouts reduce mass without compromising the strength of the part. The anodization enhances the surface and provides a silver finish that is resistant to the rigors of riding.

• Material: anodized 7075 T6 aluminum (silver color)
• Number of teeth: 44
• Chain pitch: 520
• Type: standard, mud-resistant profile
• Manufacturer reference: 123U-520-44GYSI

In motocross, enduro, or on prepared roadsters, this sprocket helps optimize transmission behavior by reducing friction and improving chain drive smoothness. Ideal for those looking to lighten the rear wheel while maintaining durability suited for harsh conditions. Compatible with many machines 250–450 cc (e.g., SUZUKI RM‑Z 250, RM‑Z 450, RMX 450), it is aimed at riders who want a high-performance and reliable part to tackle mud, sand, and rocky trails.