Vortex 817ZK-52 Black Aluminum 52-Tooth Rear Sprocket

The Vortex 817ZK-52 is a 52-tooth black anodized aluminum rear sprocket engineered for serious motorcycle racers and performance street riders. Manufactured by Vortex Racing — a U.S.-based company with over 15 years of motorsports heritage — this sprocket delivers the precision, durability, and weight savings demanded by Motocross, Supercross, Road Racing, Flat Track, and Minibike competitors.

Key Features:

• Aerospace-grade 7075 T6 billet aluminum construction reduces rotating mass for improved acceleration and throttle response
• 100% CNC machined in the USA to Vortex's tightest tolerances for a perfectly concentric fit and smooth power delivery
• Black anodized finish bonds to the aluminum surface to resist corrosion and provide enhanced durability
• Patented unique tooth design increases sprocket longevity and minimizes chain wear
• Specially formulated alloy developed per Vortex Racing's proprietary specifications
• 52-tooth rear sprocket — ideal for applications requiring increased low-end torque and acceleration gearing
• Mud-clearing grooves between teeth help keep the drivetrain clean and efficient

Vortex Racing sprockets are tested on the track with direct feedback from top professional race teams worldwide, making the 817ZK-52 a proven choice for riders who demand race-level quality in every component.