Vortex 313-51 Silver 51-Tooth 420-Pitch Aluminum Rear Sprocket

The Vortex 313-51 is a 51-tooth, 420-pitch aluminum rear sprocket finished in silver, engineered for KTM small-displacement off-road and motocross applications. Manufactured in the USA by Vortex Racing, this sprocket delivers the precision and durability demanded by competitive riders.

Key Features:

• 51 teeth, 420 chain pitch — correct sizing for KTM 60 SX, 65 SX, and 65 XC models
• 7075 T6 billet aluminum construction — high-strength alloy specially formulated to Vortex specifications
• 100% CNC machined in the USA — ensures concentricity and consistent tooth geometry
• Patented saber tooth groove design — reduces chain wear and increases overall sprocket longevity
• Lightening holes — reduce rotating mass for improved throttle response and acceleration
• Silver anodized finish — Cat 5 anodized for corrosion resistance and bright appearance

Vortex Racing has been a trusted name in motorcycle racing components for over 15 years, supplying top professional race teams in Motocross, Supercross, and Off-Road competition. The 313-51 rear sprocket is a direct replacement option for riders seeking a lightweight performance upgrade over a stock steel sprocket.