Vortex 177ZK-41 Black 41-Tooth Aluminum Rear Sprocket

The Vortex 177ZK-41 is a 41-tooth black anodized aluminum rear sprocket engineered for high-performance motorcycle applications. Part of Vortex Racing's ZK series, this sprocket is CNC-machined in the U.S.A. from a specially formulated CAT5 aluminum alloy developed to Vortex's exacting standards, delivering an outstanding balance of strength and weight savings over stock steel sprockets.

Key Features:

• 41-Tooth rear sprocket for precise gear ratio tuning
• Black anodized finish with contrasting silver machined highlights for a clean, aggressive appearance
• Lightweight CAT5 aluminum construction reduces unsprung and rotating mass
• 100% CNC manufactured in the U.S.A. for tight tolerances and consistent quality
• Vortex patented tooth profile with saber-tooth grooves designed to extend sprocket longevity and improve chain engagement
• Mud relief grooves and sweeps help clear debris and reduce chain wear
• Specially formulated alloy per Vortex specifications for optimal hardness and durability

Vortex Racing sprockets are a trusted choice among road racers, track day enthusiasts, and performance street riders who demand OEM-quality fitment with a measurable performance upgrade. The 177ZK-41 is a direct bolt-on replacement designed to work seamlessly with the correct chain pitch for its application.