Renthal Aluminium Ultra-Light Self-Cleaning 123U - 520 SprocketRef : RT00078A / 1075610011

RENTHAL Ultra-Light Mud-Resistant Sprocket 123U - 520 (47 Teeth)

Designed for demanding riders, this RENTHAL Ultra-Light sprocket combines lightweight and durability for off-road and roadster use. Precisely machined from 7075 T6 aluminum, it features a specific tooth profile that facilitates mud evacuation and minimizes friction between the chain and the sprocket.

• Material: 7075 T6 aluminum, anodized finish for a harder surface that is resistant to abrasion.
• Configuration: 47 teeth, chain pitch 520 — standard format for many transmission kits.
• Mud-resistant: tooth geometry and calculated clearances to reduce clogging in muddy conditions.
• Weight reduction: strategic machined cutouts to decrease mass without compromising structural strength.

Result: a sprocket that promotes sharper transmission behavior, simplified maintenance in dirty terrains, and proven performance for MX, SX, or enduro, while remaining suitable for roadsters seeking reliability and engine performance. Ideal for riders looking to reduce unsprung weight and optimize feel on corner exit.

Manufacturer Part No: 123U-520-47GYSI

Compatibility examples: SUZUKI RM-Z 250 (2026), SUZUKI RM-Z 450 (2024), SUZUKI RMX 450 (2019).