Vortex 438ZRV4-45 VTX Aluminum Rear Sprocket 45T

The Vortex 438ZRV4-45 is a 45-tooth aluminum rear sprocket from Vortex's VTX series, engineered for performance-oriented motorcycle riders seeking a lightweight, durable chain drive upgrade. Machined from high-grade 7075 aluminum alloy and hard anodized for corrosion resistance and extended wear life, this sprocket delivers a significant weight reduction over stock steel sprockets without sacrificing reliability.

Key Features:

• 45 Teeth – Provides modified final drive gearing for improved acceleration or top-speed tuning depending on pairing with front sprocket
• 7075 Aluminum Construction – Lightweight, high-strength alloy reduces unsprung rotational mass for improved handling response
• Hard Anodized Finish – Resists corrosion, wear, and abrasion for long service life
• VTX Series Design – CNC-machined to tight tolerances for precise chain engagement and smooth power transfer
• 438 Chain Pitch Compatible – Engineered for use with 428, 520, 525, or 530 chain sizes per the VTX series specification (verify per fitment)
• Direct OEM Replacement Fit – Bolt-on installation using existing hardware and sprocket carrier

The Vortex VTX aluminum rear sprocket is a popular upgrade among sport bike and track day enthusiasts looking to reduce rotating mass and fine-tune their motorcycle's power delivery. Compatible with Vortex's full range of front sprockets and sprocket carriers for a complete drivetrain package.