Vortex 319ZK-47 Aluminum Rear Sprocket 47T

The Vortex 319ZK-47 is a 47-tooth aluminum rear sprocket designed for high-performance motorcycle applications. Machined from lightweight 7075-T6 aluminum alloy, this sprocket delivers an ideal balance of strength, durability, and reduced unsprung weight — a popular upgrade for both track and street riders looking to fine-tune their drivetrain gearing.

Key Features:

• 47-tooth rear sprocket for precise gearing adjustments
• Constructed from 7075-T6 aircraft-grade aluminum for maximum strength-to-weight ratio
• Hard anodized finish for improved wear resistance and corrosion protection
• CNC machined to tight tolerances for smooth, precise chain engagement
• Lightweight design reduces rotational mass for improved throttle response
• Vortex ZK series design with scalloped cutouts to minimize weight without sacrificing rigidity
• Direct OEM replacement fitment — no modifications required

Vortex is a trusted name in motorcycle drivetrain components, supplying sprockets to professional race teams and performance enthusiasts worldwide. The 319ZK-47 is a direct bolt-on upgrade engineered to meet the demands of aggressive riding while maintaining long service life.