Renthal Front Sprocket Honda CR 80

The Renthal Front Sprocket Honda CR 80 is a grooved front sprocket for Honda mini motocross models using a 428 chain pitch. It fits Honda CR80 1986–2002 and Honda CR85R 2003–2007 for direct replacement of the original front sprocket.

Technical specifications

• Tooth count: 13
• Chain pitch: 428
• Design: Grooved front sprocket
• Product code: 259A-428-13GP

Design features

The grooved profile incorporates self-cleaning channels that help clear mud from the sprocket/chain interface. This reduces debris buildup around the teeth, supporting more consistent chain engagement in muddy or wet conditions.

Service context

Replace the front sprocket when teeth show hooking, sharp points, or uneven wear, or when fitting a new chain and rear sprocket set. The 13-tooth, 428-pitch configuration maintains the stock-style drive ratio for the listed Honda CR80 and CR85R applications.

Installation

This front sprocket installs as a direct fit on the specified Honda CR80 and CR85R models; reuse correct fasteners and secure to the manufacturer’s torque and locking recommendations.