Vortex 840ZBV4-40 Aluminum Rear Sprocket Chain Sprockets - 40-Tooth 520

The Vortex 840ZBV4-40 is a high-performance aluminum rear sprocket featuring 40 teeth and designed for use with a 520 pitch chain. Engineered for motorcycle and powersports applications, this sprocket delivers an excellent balance of lightweight construction and durability on both street and track.

Key Features:

• 40-Tooth rear sprocket for optimized gearing performance
• 520 chain pitch compatibility
• Constructed from lightweight, high-strength aluminum for reduced unsprung weight
• Precision CNC-machined for exact tooth geometry and consistent chain engagement
• Hard anodized finish for improved wear resistance and corrosion protection
• Direct OEM-style bolt-on fitment — no modifications required
• Manufactured by Vortex Racing, a trusted name in competitive motorsports

The Vortex 840ZBV4-40 rear sprocket is an ideal upgrade or replacement for riders looking to reduce rotating mass and fine-tune their bike's acceleration and top-speed characteristics. Compatible with the ZBV4 carrier/hub pattern as specified by Vortex's fitment guide.