Vortex 151-56 Silver 56-Tooth Aluminum Rear Sprocket

The Vortex 151-56 is a 56-tooth silver aluminum rear sprocket engineered for sport bike and powersports riders who demand precision performance and durability. CNC-machined in the USA from a specially formulated aluminum alloy, this sprocket delivers a significant weight reduction over stock steel sprockets while maintaining race-proven reliability.

Key Features:

• 56-Tooth rear sprocket for optimized gear ratio tuning
• Lightweight aluminum construction — roughly half the weight of a steel equivalent for reduced rotational mass
• 100% CNC manufactured in the USA to the tightest tolerances in the industry
• Silver anodized finish with a clear coating to resist corrosion and oxidation
• Patented unique tooth design engineered to increase sprocket longevity and reduce wear
• Specially formulated alloy per Vortex specifications for optimal strength-to-weight ratio

Vortex rear sprockets are the choice of professional racers and serious street riders alike. The 151-56 is ideal for riders looking to increase low-end torque and acceleration response by running a higher tooth count rear sprocket. As with all aluminum sprockets, regular chain cleaning and proper tension maintenance every 300–400 miles is recommended to maximize service life.