Renthal Aluminium Ultra - Light Self - Cleaning Rear 150U - 520 SprocketRef : RT00439A / 1075619021

Manufacturer Reference: 150U-520-51GBPE

The Renthal Ultra-Light 150U crown made from 7075 T6 aluminum is designed for off-road riders looking to combine lightness and strength. Its mud-resistant profile facilitates the evacuation of debris between the teeth to limit chain snags in muddy terrains. Precisely machined and equipped with strategic cutouts, it reduces unsprung mass without compromising the structural strength necessary for MX, SX, or enduro sessions.

• Material: 7075 T6 aluminum, anodized finish for a harder surface and better abrasion resistance.
• Compatibility: pitch 520, 51 teeth — replaces the standard original crown.
• Design: mud-resistant tooth profile and targeted lightening to optimize dirt evacuation and limit chain/crown friction.
• Color: purple, strong visual identity on your rear end.

Mounting suitable for cross and enduro machines: provides weight savings, contributes to a more responsive transmission, and helps prolong the overall lifespan. Particularly suitable for YAMAHA YZ 450 F (2026), FANTIC XX 125 (2022), and YAMAHA WR 450 F (2026) according to their original fitment (520/51).