Vortex 427ZK-40 CAT5 Rear Aluminum Sprocket 530 Pitch 40-Tooth Black

The Vortex 427ZK-40 is a CAT5 series rear aluminum sprocket featuring a 530 pitch and 40-tooth count, engineered for high-performance motorcycle racing and street applications. Designed to the exacting standards Vortex Racing is known for, this sprocket delivers a meaningful weight savings over OEM steel units, reducing rotating mass for improved acceleration and throttle response.

Key Features:

• 530 Pitch — compatible with standard 530-pitch drive chains
• 40-Tooth rear sprocket — bolt pattern: 427ZK (Kawasaki ZX14, all years)
• Premium 7075 aluminum construction — specially formulated alloy per Vortex specifications for maximum strength-to-weight ratio
• 100% CNC manufactured in the USA — precision machined for exact tolerances
• Color anodized finish — anodized first, then CNC machined to produce vibrant color with contrasting silver highlights
• Saber tooth groove design — Vortex patented tooth profile increases sprocket longevity and chain engagement
• Available in multiple colors — black, red, blue, and gold (color options may vary by fitment)

Reducing rotating mass at the rear wheel directly benefits acceleration, handling feel, and overall drivetrain efficiency. The Vortex CAT5 sprocket is a proven upgrade for riders seeking a performance edge on the track or the street without sacrificing durability.