Vortex 151ZR-35 CAT5 420 Rear Sprocket 35-Tooth Red Aluminum

The Vortex 151ZR-35 is a CAT5 35-tooth rear sprocket designed for 420-pitch chain applications. Machined from aerospace-grade aluminum and finished in a striking red anodize with contrasting silver machine cuts, this sprocket delivers a significant weight reduction over stock steel sprockets without sacrificing durability.

Vortex manufactures the CAT5 line from 7075-T6 aluminum to precise CNC tolerances, resulting in a sprocket that runs concentric and smooth. The proprietary saber tooth groove design clears debris from between the teeth, while Vortex's patented tooth profile distributes chain load evenly to extend both sprocket and chain life.

Key Features:

• 35 teeth — rear sprocket for 420-pitch chain
• Aerospace-grade 7075-T6 aluminum construction — specially formulated per Vortex specifications
• 100% CNC manufactured in the U.S.A. for precise tolerances
• Red anodized finish with silver machined highlights on sweeps and mud grooves
• Patented saber tooth groove design increases sprocket longevity and debris clearance
• Significantly lighter than OEM steel sprockets, reducing rotating mass for improved acceleration
• Compatible with Cobra CX65 (2012–2013) and other 420-pitch applications

The Vortex 151ZR-35 is the go-to choice for mini-moto and youth racing applications where weight savings and precision drive a competitive edge on the track.