Vortex 312ZK-55 Pitch Aluminum Rear Sprocket KTM Sprockets - 415 55-Tooth 50SX

The Vortex 312ZK-55 is a 55-tooth, 415 pitch aluminum rear sprocket engineered as a lightweight, high-performance upgrade over the stock steel sprocket for the KTM 50SX. Precision CNC-machined from aerospace-grade 7075 T6 aluminum, this sprocket delivers an exceptional strength-to-weight ratio, reducing rotational mass for quicker throttle response and improved power delivery.

Key Features:

• 55-tooth, 415 pitch configuration for optimized gearing performance
• Constructed from 7075 T6 aluminum for maximum durability with minimal weight
• CNC-machined for precise tolerances, ensuring consistent alignment and reduced drivetrain wear
• Optimized tooth geometry minimizes chain drag for smoother gear transitions and extended chain life
• Available in multiple anodized color finishes for corrosion resistance and custom styling
• Direct replacement for stock sprocket — no modifications required

The Vortex 312ZK-55 is a trusted choice for off-road and motocross riders seeking reliable gearing performance and a measurable weight savings over OEM steel components. Compatible with 415 pitch drive chains.