Vortex 120BZK-54 CAT5 Aluminum Rear Sprocket 520 Pitch 54-Tooth Black

The Vortex 120BZK-54 is a 54-tooth, 520-pitch CAT5 aluminum rear sprocket finished in a black anodized coating. Engineered for street and track use, it delivers a direct-fit replacement or performance upgrade over OEM gearing with significantly reduced rotational mass.

Key Features:

• 54-tooth rear sprocket — higher tooth count for increased low-end torque and acceleration
• 520 pitch chain compatibility — matches standard 520-series drive chains
• CAT5 aerospace-grade aluminum construction — lightweight material for reduced unsprung and rotational mass
• Black anodized finish — corrosion-resistant hard anodize for lasting appearance and durability
• CNC precision machined — manufactured to tight tolerances for smooth, consistent chain engagement
• Direct bolt-on installation with no modifications required

Vortex Racing sprockets are a trusted choice among racers and performance street riders worldwide. The 120BZK-54 is an ideal option for riders seeking improved acceleration response from their drivetrain without sacrificing reliability.