Vortex 615-55 Silver 55-Tooth Aluminum Rear Sprocket 520 Pitch

The Vortex 615-55 is a silver 55-tooth rear sprocket designed for high-performance motorcycle applications using a 520 chain pitch. Part of Vortex's standard aluminum racing sprocket line, the 615-55 is built for riders seeking aggressive acceleration tuning and stunt or performance riding setups.

Manufactured entirely in the USA, this rear sprocket is precision CNC-machined from a specially formulated aluminum alloy developed to Vortex's exact specifications. The silver anodized finish provides corrosion resistance and a clean, race-ready appearance. Vortex's patented tooth geometry is engineered to reduce wear and extend sprocket service life compared to conventional designs.

Key Features:

• 55-Tooth rear sprocket for increased low-end torque and acceleration
• 520 chain pitch compatibility
• Lightweight aluminum construction — CNC-machined in the USA
• Specially formulated alloy per Vortex specifications for strength and durability
• Silver anodized finish for corrosion resistance
• Patented tooth design engineered for extended sprocket longevity
• Available only in silver for 55-tooth and larger sizes

The 615-55 rear sprocket is a popular choice for stunt riding and performance street applications where maximum rear wheel torque is desired. It is a direct bolt-on replacement requiring no modification when used with the appropriate 520-pitch chain.