Renthal 184U-525-39P-HA Ultralight Rear Sprocket Pitch Hard Anodized Sprockets - 39T 525

The Renthal Ultralight 184U-525-39P-HA is a 39-tooth, 525-pitch rear sprocket engineered for the demands of Supercross, Motocross, and Enduro competition. Manufactured from aerospace-grade 7075-T6 aluminium alloy, it delivers a weight savings of approximately 66% compared to steel sprockets without sacrificing durability or performance.

Renthal's precision manufacturing process holds extremely tight tolerances, ensuring exceptional concentricity and accuracy of fit for maximum power transfer and extended service life. The advanced tooth profile is specifically shaped to reduce wear on both the sprocket and chain, while a hard anodized surface treatment provides a tough, wear-resistant finish that significantly extends chainwheel life under race conditions.

Key Features:

• 525 pitch, 39-tooth rear sprocket
• Constructed from 7075-T6 aluminium alloy — approximately 66% lighter than steel
• Hard anodized finish for exceptional surface hardness and wear resistance
• Advanced tooth profile for optimized power transfer and reduced chain wear
• Precision-machined for superior concentricity and accuracy of fit
• Self-cleaning mud grooves to prevent dirt and debris build-up
• Designed for Supercross, Motocross, and Enduro applications

The Renthal Ultralight rear sprocket is the choice of professional racers worldwide, combining race-proven durability with significant weight reduction to deliver a competitive edge on any track or trail.