Vortex 505ZK-45 Black 45-Tooth 428-Pitch Rear Sprocket

The Vortex 505ZK-45 is a black anodized, 45-tooth, 428-pitch aluminum rear sprocket engineered for performance motorcycle applications. Designed and manufactured in the USA, this sprocket delivers the same race-proven quality trusted by professional teams worldwide in Motocross, Supercross, and Road Racing competition.

Key Features:

• 428 Pitch – Designed for 428-series chain applications
• 45-Tooth rear sprocket for optimized gearing ratios
• Lightweight CAT5 aluminum construction – reduces rotating mass for improved throttle response and acceleration
• 100% CNC manufactured in the USA to the tightest tolerances
• Black anodized finish with machined silver accents for corrosion resistance and visual appeal
• Vortex patented tooth design – unique saber tooth groove geometry increases sprocket longevity
• Specially formulated alloy per Vortex specifications for maximum strength-to-weight ratio

Vortex Racing sprockets are a top choice for riders who demand precision-engineered drivetrain components. The 505ZK-45 is ideal for riders looking to fine-tune their gearing for increased low-end torque and quicker acceleration without sacrificing quality or durability.