Vortex 840ZKV4-41 V4 Aluminum Rear Sprocket 530 Pitch 41-Tooth Black

The Vortex 840ZKV4-41 is a 41-tooth, 530-pitch rear aluminum sprocket built on Vortex Racing's next-generation V4 design. Engineered for serious street and track riders, the V4 platform delivers a 10–15% weight reduction over the classic CAT5 sprocket without sacrificing structural integrity, thanks to an updated lightening pattern with fully machined faces on both sides.

Key Features:

• V4 design — 10–15% lighter than the CAT5 with optimized material removal and machined faces on both sides
• 530 pitch — compatible with standard 530-series drive chains
• 41 teeth — stock-replacement tooth count for supported applications
• Black anodized finish — anodized before CNC machining for a distinctive two-tone appearance with silver machined highlights
• 100% CNC manufactured in the USA using a specially formulated aluminum alloy per Vortex specifications
• Unique tooth geometry — Vortex patented tooth profile engineered to extend sprocket longevity
• Designed for aftermarket wheel fitments in the 840 series

Vortex has been manufacturing precision racing drivetrain components in the USA since 1995. The 840ZKV4-41 is ideal for riders seeking maximum weight savings on the rotating assembly while maintaining the durability and quality Vortex is known for. As with all aluminum sprockets, regular chain cleaning and proper tension maintenance every 300–600 miles on street applications is recommended to maximize service life.