Vortex 203-45 Silver 45-Tooth Steel Rear Sprocket

The Vortex 203-45 is a silver 45-tooth steel rear sprocket engineered for motorcycle and powersports applications. Built by Vortex Racing — a U.S.-based manufacturer owned and operated by motorcycle racers and enthusiasts — this sprocket delivers race-proven durability and precision in a street and track-ready package.

Constructed from a carbon steel alloy formulated to Vortex's own specifications, the 203-45 features silver anodizing to resist corrosion and maintain appearance over time. Vortex's patented tooth profile is designed to reduce wear and extend sprocket life beyond what conventional sprocket designs offer.

Key Features:

• 45-Tooth rear sprocket for modified gearing ratios
• Carbon steel alloy construction per Vortex specifications
• Silver anodized finish for corrosion resistance
• Patented unique tooth design increases sprocket longevity
• 100% CNC manufactured in the USA
• Race-tested by professional teams worldwide

Upgrading to a higher tooth count rear sprocket like the 203-45 increases the drive ratio, improving low-end torque and acceleration response — a popular modification for street riders and track enthusiasts seeking stronger pull out of corners. Pair with a matching pitch chain and front sprocket for a complete drivetrain upgrade.