Vortex 193ZR-51 Aluminum Rear Sprocket 520 Pitch 51-Tooth

The Vortex 193ZR-51 is a 520-pitch, 51-tooth aluminum rear sprocket engineered for performance motorcycle applications. Built to Vortex Racing's exacting standards, this sprocket is CNC-machined in the USA from a specially formulated aerospace-grade aluminum alloy, delivering an ideal balance of lightweight performance and long-term durability.

Key Features:

• 520 Pitch Compatibility: Designed for use with standard 520-pitch motorcycle drive chains
• 51-Tooth Rear Sprocket: Higher tooth count supports improved low-end torque and acceleration
• CNC Machined: 100% CNC manufactured in the USA to tight tolerances for precise fitment and concentricity
• Aerospace-Grade Aluminum: Specially formulated alloy per Vortex specifications for optimal strength-to-weight ratio
• Lightening Holes: Strategic cutouts reduce rotating mass for improved throttle response
• Vortex Patented Tooth Design: Unique saber-tooth profile increases sprocket longevity and chain engagement efficiency
• Anodized Finish: Silver anodized surface treatment helps resist corrosion and oxidation

Vortex Racing has been a trusted name in professional motorcycle racing for over 15 years, with components validated by top-tier race teams in Motocross, Supercross, and Road Racing. The 193ZR-51 rear sprocket is a direct upgrade over OEM gearing for riders seeking enhanced low-end pull and sharper acceleration without sacrificing quality or reliability.