Vortex 780ZK-51 VTX Aluminum Rear Sprocket 51-Tooth

The Vortex 780ZK-51 is a 51-tooth aluminum rear sprocket from Vortex Racing's VTX series, engineered for riders who demand precision, reduced weight, and proven performance on the street or track.

Key Features:

• 7075 T6 billet aluminum construction — aerospace-grade alloy delivers an exceptional strength-to-weight ratio for reduced rotating mass
• 51-tooth rear sprocket — part of the 780ZK application-specific series
• Black hard-coat (PTFE) anodized finish — bonds directly to the aluminum surface for enhanced durability and reduced friction compared to standard anodized finishes
• CNC machined in the USA — manufactured to tight tolerances ensuring concentricity and smooth, consistent power delivery
• Patented Vortex tooth design — optimized tooth profile extends sprocket and chain life while minimizing drivetrain drag
• Lightening holes — strategically placed cutouts further reduce overall sprocket weight and rotating mass
• Mud-clearing grooves — help shed debris and keep the drivetrain running cleanly

Vortex Racing has supplied high-performance drivetrain components to professional race teams and enthusiasts across Motocross, Supercross, Road Racing, and Flat Track disciplines. Every sprocket is manufactured to the same demanding standards trusted by championship-winning teams worldwide.