Vortex 826ZKV4-42 VTX Aluminum Rear Sprocket 42T

The Vortex 826ZKV4-42 is a lightweight, high-performance 42-tooth aluminum rear sprocket from Vortex Racing's VTX series. Precision CNC-machined from aerospace-grade 7075-T6 aluminum alloy, this sprocket delivers exceptional strength-to-weight savings over stock steel sprockets — a favorite upgrade among sport bike and track riders looking to reduce unsprung rotational mass.

Key Features:

• 42 Teeth — direct replacement tooth count for stock gearing or performance tuning
• 7075-T6 Aluminum Construction — high-strength alloy provides excellent durability while reducing weight compared to steel
• Hard Anodized Finish — resists corrosion, wear, and chain abrasion for extended service life
• CNC Precision Machined — tight tolerances ensure smooth, quiet chain engagement and proper alignment
• VTX Series Design — features Vortex's signature lightening pockets to further minimize rotating weight
• Direct OEM Replacement Fitment — bolt-on installation with no modifications required

Vortex Racing is a trusted name in the powersports industry, supplying sprockets to professional racing teams and performance-focused riders worldwide. The 826ZKV4-42 is designed to meet the demands of both street and track use, offering a noticeable improvement in throttle response and acceleration feel. Compatible with the appropriate chain pitch for this application — always verify chain pitch and carrier fitment prior to installation.