Vortex 505ZK-42 Black 42-Tooth 428-Pitch Steel Rear Sprocket

The Vortex 505ZK-42 is a 42-tooth, 428-pitch steel rear sprocket finished in an electro-plated satin black coating for superior corrosion resistance. Engineered for performance street and off-road applications, this sprocket is manufactured from a specially formulated carbon steel alloy to Vortex's exacting specifications, delivering the strength and longevity serious riders demand.

Key Features:

• 428 Pitch — designed to pair with 428-pitch drive chains
• 42 Teeth — optimized tooth count for targeted gear ratio tuning
• Carbon steel construction — hardened teeth resist wear under demanding riding conditions
• Electro-plated satin black finish — provides long-lasting corrosion protection
• Vortex patented tooth profile — unique tooth geometry engineered to extend sprocket service life
• Cupped face design — reduces overall sprocket weight without sacrificing strength

The Vortex 505ZK-42 is a direct-fit replacement sprocket that allows riders to fine-tune their final drive ratio for improved acceleration or top-end speed. Vortex sprockets are trusted by professional racers and performance street riders alike for their consistent quality and long service life.