Vortex 641AZK-41 Aluminum Rear Sprocket 525 Pitch 41 Tooth Black Hardcoat

The Vortex 641AZK-41 is a high-performance aluminum rear sprocket designed for racing and sport riding applications. This 525-pitch sprocket features 41 teeth and is constructed from specially formulated aerospace-grade aluminum alloy with a black PTFE hardcoat finish that bonds to the aluminum surface for increased durability and reduced friction.

Key Features:

• Lightweight aluminum construction significantly reduces rotating mass compared to steel sprockets for improved acceleration and handling
• 100% CNC-machined in the USA to precise tolerances
• Black PTFE hardcoat finish provides superior wear resistance and corrosion protection
• Vortex patented tooth design with saber tooth grooves increases sprocket longevity
• 525 chain pitch with 41 teeth
• Specially formulated alloy engineered to Vortex specifications for maximum strength-to-weight ratio

Vortex Racing sprockets are track-tested by professional race teams worldwide and manufactured to the highest quality standards. The aluminum construction delivers measurable performance gains by reducing unsprung weight, allowing more power to reach the pavement while improving throttle response and cornering dynamics.