The Renthal Ultra-Light 150U crown, made from 7075 T6 aluminum, is designed for motocross and enduro riders looking to lighten their drivetrain without sacrificing strength. Its mud-resistant profile facilitates dirt evacuation and reduces friction between the chain and crown, helping to minimize power losses in muddy conditions. The hard anodization strengthens the surface and protects against abrasion while providing a polished finish.

• High-precision machining in ultra-light 7075 T6 aluminum.
• Optimized tooth profile for mud evacuation and controlled chain contact.
• Strategic cutouts to lighten the part without compromising strength.
• Hard anodization for better wear resistance and a durable finish.

Ideal for MX, SX, and enduro machines, this full-race crown offers a weight/strength compromise suited to the demands of the terrain. It is to be mounted on a 520 pitch drivetrain to achieve optimized responsiveness and chain retention in extreme conditions.

• Manufacturer reference: 150U-520-51GBHA
• Brand: RENTHAL
• Number of teeth: 51
• Chain pitch: 520
• Material: Aluminum (7075 T6), hard anodization
• Color: Aluminum

Examples of compatible models: YAMAHA YZ 450 F (2026), FANTIC XX 125 (2022), YAMAHA WR 450 F (2026). Please check compatibility with your motorcycle before installation.