Skidoo 250cc Olympic snowmobile ( Used piston)! Parts # 420-9983-45 . Condition is Used. It is and ELKO Own piston has marking on top 10546,6792 also Sp0.09 these all stamped on top of piston there is no wristpin the circlips for wristpin are in piston and rings also on piston it is in good shape to be used for repair may fit other applications if you have ?? Plz reply thank you for bidding and looking!!