Milwaukee Twins Primary Case Saver For Harley FL FX The Milwaukee Twins Primary Case Saver offers robust protection for your motorcycle's inner case and starter housing against drivetrain damage. Crafted from high-strength reinforced nylon, it combines durability with lightweight design. This essential accessory efficiently absorbs impacts, shielding your bike's case from potential harm. Formerly offered under the J&P Cycles brand. Features: Protects inner case and starter housing area that is damaged by drive train Constructed from high quality reinforced nylon