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How to Replace Chain Kit, Sprocket and Pinion on Aprilia RS 125

Model: Aprilia Rs 125
Part:

Video tutorial

In this video tutorial, you will learn how to remove and replace the chain kit, sprocket, and pinion, thus the entire distribution system, on an Aprilia RS 125 two-stroke motorcycle. First, position your bike on a stand and use a flat screwdriver to remove the link of the chain that will allow you to disassemble and remove it; then unscrew the rear wheel bolt to take off the wheel.

At this point, unscrew the fixing screws of the sprocket to remove and replace it; perform the same operation for the removal of the pinion. Apply the reverse procedure for reassembly!


Updated on 2 May 2026 by ScegliAuto


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Watch the video!


by ScegliAuto

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