Vortex 170ZKV4-42 Aluminum Rear Sprocket 42-Tooth

The Vortex 170ZKV4-42 is a 42-tooth aluminum rear sprocket from Vortex Racing's ZKV4 series, engineered for performance motorcycle applications. Constructed from high-strength 7075-T6 aluminum alloy, this sprocket delivers an exceptional strength-to-weight ratio, shedding significant weight compared to stock steel sprockets without sacrificing durability.

Key Features:

• 42-Tooth rear sprocket for optimized acceleration and gear ratio tuning
• 7075-T6 aluminum construction for lightweight, high-strength performance
• Hard anodized finish for enhanced wear resistance and corrosion protection
• CNC-machined to precise tolerances for smooth, consistent chain engagement
• Lightening holes reduce rotational mass for improved throttle response
• Direct OEM-style bolt-on fitment — no modifications required
• Vortex 170 hub pattern compatibility

Vortex Racing is a trusted name in motorsports, supplying sprockets to professional road racers and track-day enthusiasts alike. The ZKV4 series sprockets are a popular upgrade for riders looking to fine-tune their drive ratio for the track or street. Replace your worn or heavy stock sprocket with the Vortex 170ZKV4-42 for a noticeable improvement in acceleration feel and a reduction in unsprung rotational weight.