MOTION PRO Krukastrekker Bicycle Replacement piston: 9192DA Replacement Replacement piston: 9192DA Replacement piston ring: 271258 Engine top gasket set: 601290 Plug one of the SAE connection to the eylet terminal Time saving method maintains crank shaft true during installation 25mm and 40mm billet aluminum face plate adaptors ensure crankshaft is pulled perfectly straight into bearings