Vortex 170ZR-51 VTX Aluminum Rear Sprocket 51-Tooth

The Vortex 170ZR-51 is a 51-tooth aluminum rear sprocket engineered for performance-minded motorcycle riders who demand precision, lightweight construction, and durability. Part of Vortex Racing's trusted VTX sprocket lineup, this sprocket is 100% CNC machined in the USA from high-grade aluminum to exact tolerances, ensuring consistent concentricity and a precise chain mesh for every ride.

Key Features:

• 51-tooth rear sprocket for fine-tuned gear ratio adjustments
• Machined from aerospace-grade 7075 T6 aluminum for an exceptional strength-to-weight ratio
• Lightweight design reduces rotating mass for improved throttle response and acceleration
• Lightening holes further minimize weight without sacrificing structural integrity
• Clear anodized finish protects against oxidation and corrosion
• 100% CNC manufactured in the USA for consistent quality and tight tolerances
• Designed for street, track, and racing applications

Vortex aluminum rear sprockets are a popular choice for road racers, drag racers, and performance street riders looking to reduce unsprung and rotational weight. For maximum longevity, chain cleanliness and tension should be checked every 300–400 miles when running an aluminum sprocket. The 170ZR-51 is a direct bolt-on replacement that delivers race-proven performance right out of the box.