Hot Set-Up Kit - Big TwinCaracteristicas: Kits come with 4 1 2" stroker flywheels assembled with mainshafts and rods, 3. 625" bore cylinders, pistons, rings, pins and clips, S&S 514 cam, S&S Super E carb kit, valve springs, adjustable chromoly pushrods, top pushrod tube clips, top motor mount and installation instructions Use stock heads, cases, tappets and pinion gears Bearings and seals are not included; must be purchased separately Made in the U. S. A. Require motor cases