Vortex 253C-39 Rear Sprocket Aluminum Sprockets - 39-Tooth CAT5

The Vortex 253C-39 is a precision-engineered aluminum rear sprocket designed for high-performance motorcycle applications. This 39-tooth sprocket features Vortex's CAT5 (Computer Aided Technology) construction, combining lightweight aluminum alloy with advanced engineering for optimal power transfer and durability.

Key Features:

• 39-tooth configuration for customized gear ratios
• CAT5 aluminum construction for reduced rotating mass and improved acceleration
• Vortex's patented tooth profile design extends sprocket life
• Strategic lightening holes reduce weight without compromising strength
• Precision-machined to exact specifications for true concentricity
• Hard-anodized finish for superior wear resistance
• CNC-machined mounting holes ensure perfect alignment

Vortex CAT5 aluminum sprockets are manufactured from specially formulated aluminum alloy to deliver an excellent balance of strength and weight savings. The unique tooth profile design helps distribute chain load more evenly, reducing wear on both the sprocket and chain. Ideal for track, street, and racing applications where performance and reliability are critical.