Vortex 120BZK-49 Aluminum Rear Sprocket 49-Tooth 520 Pitch Black Anodized

The Vortex 120BZK-49 is a 49-tooth, 520-pitch aluminum rear sprocket finished in a black anodized coating with machined contrast accents. Designed for serious street and track riders, this sprocket delivers a meaningful reduction in rotating mass compared to stock steel units, translating directly into sharper throttle response and improved acceleration.

Key Features:

• 49-Tooth / 520 Pitch: Direct replacement rear sprocket for compatible 520-chain drive motorcycles
• Lightweight Aluminum Construction: Reduces rotating mass for improved acceleration, deceleration, and directional changes
• Black Anodized Finish with Machined Accents: Corrosion-resistant finish with a premium two-tone appearance
• 100% CNC Manufactured in the USA: Machined to precise tolerances using a specially formulated alloy per Vortex specifications
• Vortex Patented Tooth Design: Unique tooth geometry engineered to increase sprocket longevity and reduce chain wear
• 7075-T6 Billet Aluminum: High-strength aerospace-grade alloy chosen for the optimal balance of weight savings and durability

Vortex Racing has over 15 years of experience producing top-quality motorcycle racing components, with products validated by professional race teams competing in Motocross, Supercross, Road Racing, and Flat Track events worldwide. The 120BZK-49 is an ideal upgrade for riders looking to fine-tune their gearing for more aggressive acceleration or track use.