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Athena 125cc aluminium cylinder kit for Yamaha 125cc
The Athena cylinder kit is designed to replace the original, it may offer slight gains over the original with the included forged piston.
This kit includes cylinder, head, piston, power valve and all the necessary gaskets and seals.
When fitting this kit, adjustments to the carburettor may be necessary.
Derbi GPR 125
Yamaha TZR 125 R / RR
Yamaha DT 125 R/RE/X
Yamaha TDR 125
The power valve has a round end with flat segment cut outs.
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