Vortex 526AZK-51 Cat5 Rear Aluminum Sprocket Black 51t

The Vortex 526AZK-51 is a 51-tooth Cat5 rear aluminum sprocket finished in black, engineered for performance riders who demand lightweight precision without sacrificing durability. Vortex's Cat5 sprockets are CNC-machined from high-grade 7075-T6 aluminum and hard anodized for corrosion resistance and long service life.

Key Features:

• 51-Tooth rear sprocket for increased acceleration and lower-end torque
• Cat5 series — CNC-machined from 7075-T6 aircraft-grade aluminum
• Black hard anodized finish for corrosion resistance and a clean appearance
• Lightweight aluminum construction reduces unsprung rotational mass
• Precision-cut teeth for smooth, consistent chain engagement and reduced wear
• Direct OEM-style bolt pattern for straightforward installation
• Made in the USA by Vortex Racing

The Vortex Cat5 rear sprocket is a popular upgrade for sport bike and track-day riders looking to fine-tune their final drive ratio. Going to a 51-tooth rear sprocket sharpens throttle response and improves acceleration out of corners, making it ideal for tight, technical circuits or spirited street riding. Paired with a quality chain, this sprocket delivers reliable, race-proven performance.