Vortex 438KV4-43 V4 Aluminum Rear Sprocket 530-Pitch 43-Tooth

The Vortex 438KV4-43 is a 43-tooth, 530-pitch aluminum rear sprocket built on Vortex's next-generation V4 design — the latest evolution of their legendary CAT5 platform. The V4 pattern delivers a 10–15% reduction in weight compared to the standard CAT5 without sacrificing structural integrity, thanks to a refined cutout pattern with machined faces on both sides. This makes it an ideal upgrade for riders looking to reduce rotating mass and sharpen throttle response.

Key Features:

• 530-Pitch chain compatibility — 43 teeth
• V4 design — 10–15% lighter than the CAT5 with no loss in strength
• 100% CNC machined in the USA to tight tolerances
• Specially formulated aluminum alloy per Vortex specifications
• Anodized finish to resist corrosion and oxidation
• Unique Vortex patented tooth profile for extended sprocket longevity
• Saber tooth groove geometry for superior chain engagement and wear resistance

Vortex Racing has manufactured top-quality motorcycle drivetrain components in the USA since 1995, with direct feedback from professional racing teams worldwide. The 438KV4-43 rear sprocket is a direct performance upgrade for applications running a 530-pitch chain, delivering the proven Vortex quality trusted by racers and enthusiasts alike.