Renthal 224U-520-53GPOR Ultralight Grooved Rear Sprocket 520 Pitch 53 Tooth Orange

The Renthal 224U-520-53GPOR is an Ultralight Grooved rear sprocket built for serious motocross, supercross, and off-road competitors who demand maximum weight savings without compromising durability. CNC machined from a specially enhanced 7075 T6 aluminum alloy, this chainwheel is 66% lighter than a comparable steel sprocket while remaining incredibly strong and wear-resistant.

The defining feature of the Grooved design is the machined cutouts at the base of each tooth. These self-cleaning grooves allow mud and debris to escape freely rather than pack between the sprocket and chain — preventing the added tension and accelerated wear that mud buildup causes. It is the ideal choice for off-road and enduro riding where contamination is unavoidable.

Key Features:

• 520 pitch, 53 tooth rear chainwheel in anodized orange finish
• CNC machined from specially enhanced 7075 T6 aluminum alloy — 66% lighter than steel
• Machined self-cleaning mud grooves at each tooth prevent debris buildup and reduce chain wear
• Advanced computer-engineered tooth profile for precise concentricity and maximum power transfer
• Exceptionally hardwearing surface treatment for extended chainwheel life
• Manufactured to extremely tight tolerances for optimal load distribution and chain engagement
• Anodized orange finish provides corrosion protection and a distinctive look

Renthal chainwheels are the choice of more factory motocross and supercross teams than any other brand. The Ultralight Grooved series combines race-proven engineering with a field-ready design that performs in the toughest conditions.