Renthal 224U-520-42GPSI Ultralight Rear Sprocket 520 Pitch 42 Tooth Silver Anodized

The Renthal 224U-520-42GPSI Ultralight rear sprocket is precision CNC-machined from a specially enhanced aerospace-grade 7075 T6 aluminum alloy. This grooved rear chainwheel delivers a 66% weight reduction over steel alternatives without sacrificing strength or durability, making it a proven choice for motocross, supercross, enduro, and street applications.

Key Features:

• 520 pitch, 42-tooth configuration for optimized final drive gearing
• Precision CNC-machined to extremely tight tolerances for accurate concentricity and fitment
• Computer-aided Ultralight™ tooth profiling maximizes chain engagement and power transfer
• Grooved construction reduces mass while maintaining full structural integrity
• Advanced surface treatment provides exceptional wear resistance and extended service life
• Silver anodized finish offers corrosion protection and a clean, distinctive appearance
• High-strength 7075 T6 aluminum alloy delivers a superior strength-to-weight ratio

Renthal Ultralight™ rear chainwheels are manufactured to extremely tight tolerances from a specially developed material built to withstand the rigors of racing and hard use. The advanced tooth profile, concentricity, and precision fit work together to provide maximum power transfer and long service life. Renthal chainwheels are chosen by more factory motocross and supercross teams than any other brand available.