Vortex 170ZO-51 VTX Aluminum Rear Sprocket 51T

The Vortex 170ZO-51 is a 51-tooth aluminum rear sprocket from Vortex Racing's VTX series, designed for performance-minded motorcycle riders who demand precision, lightweight construction, and race-proven durability.

Key Features:

• 7075-T6 billet aluminum construction — one of the strongest aluminum alloys available, delivering an exceptional strength-to-weight ratio
• CNC machined to tight tolerances — ensures perfect concentricity and smooth, vibration-free power transfer
• Lightening holes reduce overall rotating mass for improved throttle response, acceleration, and deceleration
• Clear anodized finish provides corrosion resistance and long-lasting appearance
• 51 teeth — provides gear ratio tuning suited for increased low-end torque and acceleration
• 100% manufactured in the USA by Vortex Racing
• Gunk-clearing tooth profile helps shed debris and extend sprocket life

Vortex Racing has been a trusted name in motorcycle racing components for over 15 years, supplying sprockets to professional race teams across Motocross, Supercross, Road Racing, and Flat Track disciplines. The 170ZO-51 is a direct bolt-on replacement rear sprocket engineered to OEM mounting specifications while delivering significant weight savings over stock steel sprockets.