• Custom modified large rear sprocket fit for Kawasaki Ninja ZX25R
• Increase low‑end torque, greatly improve starting and acceleration performance
• Heavy‑duty steel construction, high hardness, wear‑resistant and impact‑resistant
• Precision tooth cutting, smooth chain meshing, reduce chain jump and noise
• Anti‑rust surface treatment, long service life under various riding conditions
• Strict dimension control, matches original chain and front sprocket perfectly
• Direct bolt‑on installation, no extra frame modification required
• Optimize power output for street commuting, hill climbing and track practice
• Reduce premature chain wear with accurate tooth profile
• Cost‑effective power tuning modification for ZX25R

Fitment: Kawasaki Ninja ZX25R

Product Type: Modified Large Rear Sprocket

Material: High‑strength Carbon Steel

Surface Finish: Anti‑rust black coating

Feature: Boost low‑end torque & acceleration

Chain Compatibility: Matches original drive chain

Installation: Direct replace stock rear sprocket

Package Includes: 1 * Modified Rear Sprocket

Compatible Model:

• Kawasaki Ninja ZX25R (all year versions)

Manufactured strictly according to original rear wheel installation dimension. Mounting hole position and tooth pitch fully match stock wheel hub and original drive chain. Direct replacement of factory sprocket, no drilling or modification needed. Recommend to inspect or replace drive chain together during sprocket upgrade for best service life.

• Modified large sprocket, enhance low‑end torque & acceleration
• Precise CNC‑machined teeth for smooth chain engagement
• Heavy‑duty steel, wear‑resistant and anti‑corrosion
• Exact fit Ninja ZX25R hub, direct bolt‑on replacement
• Reduce chain jump and abnormal running noise
• Optimize performance for street, climb and track riding
• Heat‑treated surface for longer service lifespan
• Factory direct supply, reliable modified drive gear