Description This is a fully reconditioned 37A style bottom end. New main bearings, new Viton drive side seal, new big end and little end. The drive side has been machined so a smaller primary sprocket can be fitted if required. 5 1/2″ rod length Machined down timing side from a siba start style. You may need a new armature plate depending on what you currently have. Can come with or without the armature plate, please select from the drop down.
