Kawasaki Z400 & ZX-4R Sprocket Guide
Upgrading your Kawasaki motorcycle Z400 ZX-4R sprocket is one of the most effective ways to transform your bike’s performance. Whether you’re chasing quicker acceleration, better top speed, or improved overall rideability, the right sprocket setup makes a significant difference. This guide covers everything from selecting the ideal sprocket combination to a step-by-step installation tutorial.
Performance Impact of Sprocket Changes
Changing your sprocket size alters your bike’s final drive ratio. A smaller rear or larger front sprocket can increase top speed, while a larger rear or smaller front sprocket boosts acceleration. For the Kawasaki Z400 and ZX-4R, popular upgrades include a +2 tooth rear sprocket for more aggressive low-end power, ideal for city riding and track use.
Step-by-Step Installation Guide
Installing a new sprocket requires basic tools and mechanical confidence. First, secure the motorcycle and remove the rear wheel. Loosen the chain and then the sprocket retaining bolts. Swap the old sprocket for the new one, ensuring proper alignment. Re-tighten all bolts to the manufacturer’s specified torque and re-adjust the chain tension. Always double-check everything before a test ride.
Common Sprocket Upgrade Questions
What is the best sprocket combo for the Z400?
A common and effective setup is the stock front sprocket paired with a 42-tooth rear sprocket, which sharpens acceleration without overly sacrificing top speed.
Will changing sprockets affect my speedometer?
Yes, altering the final drive ratio will cause a slight discrepancy in your speedometer reading. A speedohealer or similar device is recommended for correction.
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