Vortex 840KV4-45 Aluminum Rear Sprocket Chain Sprockets - 530 45-Tooth Silver

The Vortex 840KV4-45 is a lightweight aluminum rear sprocket designed for riders who demand precision-engineered, race-proven drivetrain components. Part of Vortex's popular 840 series, this sprocket is built to exacting standards and 100% CNC manufactured in the USA for consistent quality and concentricity.

Key Features:

• 530 Chain Pitch — Compatible with standard 530-pitch drive chains
• 45-Tooth rear sprocket for optimized acceleration and drive ratio tuning
• Lightweight aluminum construction reduces rotating mass for improved throttle response and performance
• Machined from specially formulated aluminum alloy per Vortex specifications for strength and longevity
• Silver anodized finish provides corrosion resistance and a clean, race-ready appearance
• Unique tooth profile design engineered to increase sprocket longevity and reduce chain wear
• Lightening holes further reduce unsprung rotating weight
• 100% CNC manufactured in the USA

Vortex has been producing top-quality racing components since 1995. The 840 series aluminum rear sprocket is a direct upgrade over heavy OEM steel sprockets, delivering measurable weight savings and improved drivetrain efficiency for street and track use.