Vortex 245AKV4-42 VTX Aluminum Rear Sprocket 42T

The Vortex 245AKV4-42 is a 42-tooth aluminum rear sprocket from Vortex's VTX series, engineered for riders seeking a lightweight, high-performance alternative to stock steel sprockets. Machined from high-grade 7075 aluminum alloy, this sprocket delivers an excellent strength-to-weight ratio while shedding significant rotating mass compared to OEM replacements.

Key Features:

• 42-tooth rear sprocket for optimized acceleration and gearing ratio
• Precision CNC-machined from 7075 aluminum alloy for durability and light weight
• Hard anodized finish for enhanced corrosion and wear resistance
• Precisely cut sprocket teeth for smooth, quiet chain engagement
• Direct OEM-style bolt-on fitment — no modifications required
• Part of Vortex's VTX aluminum sprocket line

Vortex sprockets are manufactured in the USA and are a popular choice for street, track, and sport riding applications. The 245AKV4-42 is a direct replacement sprocket designed for precise fitment and long service life when paired with a compatible drive chain.