Vortex 151ZR-45 CAT5 420 Aluminum Rear Sprocket 45-Tooth

The Vortex 151ZR-45 is a 45-tooth, 420-pitch CAT5 aluminum rear sprocket designed for riders who demand lightweight performance without sacrificing durability. Part of Vortex's renowned CAT5 M-tooth sprocket line, this rear sprocket is 100% CNC-machined in the U.S.A. from a specially formulated, aerospace-grade aluminum alloy to deliver a significant weight reduction over OEM steel sprockets.

Key Features:

• 420 Pitch: Designed for 420-chain applications on mini-motos, pit bikes, and small-displacement motorcycles
• CAT5 Aluminum Construction: Lightweight aerospace-grade aluminum alloy formulated to Vortex specifications for strength and longevity
• Saber Tooth Groove Design: Vortex's patented M-tooth profile increases sprocket longevity and promotes smooth chain engagement
• Color Anodized Finish: Anodized finish applied to the sprocket body (excluding sweeps, mud grooves, and teeth) with contrasting silver machined highlights
• 100% CNC Manufactured in the U.S.A.: Precision machining ensures consistent quality and accurate tooth geometry
• 45 Teeth: Provides increased low-end torque and quicker acceleration compared to lower tooth-count sprockets

Vortex CAT5 aluminum rear sprockets reduce rotating mass for improved throttle response and acceleration. The anodized finish resists corrosion while delivering a distinctive look on the track or street. Always replace the chain and front sprocket simultaneously to ensure even wear.