S&S Cycle 310-1057A 124in. Power Package for M-Eight w/Non-Highlighted Cylinder Fin - Chain Drive Cam & Gloss Black Tube

Demon’s Part # 0904-0062 Mfg. Part # 310-1057A


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Increase your 107in. M-Eight engine to 124in. with this bolt-on power package. 41/4in. bore cylinders with 11:1 forged pistons. Wrinkle black finish cylinders with or without fin highlighting. S&S oil pump/ cam plate with a blue anodized finish. Passage plugs are removable for servicing. Independent scavenge sections for flywheel cavity and cam chest. Debris screen in both scavenge pickups. Magnet in cam chest to help prevent debris from entering the oil pump. Increased oil flow capacity on both the oil feed and scavenge side. Adjustable pressure relief valve can be adjusted with the unit installed in the engine. Quickee pushrods with chrome or gloss black pushrod tubes. S&S premium tappets. S&S hard-anodized, black coating tappet cuffs are billet aluminum construction. Improve tappet stability in high lift, high rpm situations. S&S 550 cam is designed for big bore applicationsm (gear or chain drive cams available). S&S valve springs; work with cams up to .605in. lift. High-performance conical single-wire spring design. All necessary gaskets, bearings and hardware for bolt-on installation included. Made in the u. s. a.