Vortex 920ZK-33 VTX Aluminum Rear Sprocket Pitch Sprockets - 33-Tooth 520

The Vortex 920ZK-33 is a lightweight, high-performance aluminum rear sprocket from Vortex's VTX series, designed for riders seeking a precision-machined upgrade over heavy OEM steel sprockets. Engineered for 520-pitch chain systems, this 33-tooth sprocket delivers an optimal balance of durability and reduced rotating mass for improved throttle response and acceleration.

Key Features:

• Material: High-strength 7075 aluminum alloy for maximum strength-to-weight ratio
• Tooth Count: 33 teeth
• Chain Pitch: 520 (920 series)
• Finish: Hard anodized for corrosion resistance and long-lasting appearance
• Construction: CNC-machined to tight tolerances for precise chain engagement and reduced wear
• Weight Savings: Significantly lighter than OEM steel sprockets, reducing unsprung rotational weight
• Series: VTX (ZK) series — Vortex's premium sport and track-focused line

The Vortex 920ZK-33 is a popular choice for sport bike and track-day enthusiasts looking to fine-tune their final drive ratio while shedding unnecessary weight. Vortex sprockets are manufactured in the USA and are known for their consistent quality, precise fitment, and competitive durability.