6593 ARC Billet Briggs 5HP Flathead Alloy Stroker Crankshaft .563"X 3.0" Machined from the hardest, toughest material ever used for small 4 stroke engines. Features a true 1/8" journal for strength and durability.ARC Billet Alloy Crankshaft .563" X 3.00" x .875" journal * 3" Bore X 3" Stroke... $513.00 Add to Cart The item has been added Compare