Chain set Aprilia Tuono 125 03-07 (type SFD00), DID 520VX2 open X-ring chain with hollow rivet lock and 104 rollers, suitable for street and off-road motorcycles up to 750ccm, tensile strength 3724kg, chain wheel made of high-precision C45 high carbon steel, chain sprocket made of SCM415 Chromoly Alloy steel CNC machined, gear ratio 14/40.
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