50factory Aluminum piston cylinder Ø40mm Derbi Euro 3, Euro 4 R4 Racing
High engine aluminum R4 Racing to Derbi € 3 Kit piston complete new piston adaptable for motorcycle 50cc for Derbi Senda DRD Racing, Gilera RCR and other powered models Derbi Euro 3. Also remember to replace the 12x15x15mm pin shaft needle cage which is not supplied in the high engine kits (this bearing is
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