The demand for performance-based Softail parts is growing, and like with M8 Touring engines, it seems they are creating more power daily. All that power requires a quality and strength that stock cases just can't provide. That's where the new S&S M8 'B' (balanced) crankcases come in. Designed to allow for larger bores, with a machined oil scraper for less oil on the flywheels. Offered is better reliability, all while fitting in a stock Softail frame. - Stock deck height - Fits stock frame - Stronger than stock - Machined, close-fitting oil scraper (stock is as cast) - Large volume sump - Redesigned to accept larger bores - Upgrade replacement reference for OEM 24400188. Note: See 708928 for the S&S Large 4-1/2" bore (4.695" spigot bore) M8 Softail crankcases