Handcrafted from polished stainless steel these 6 velocity stacks will not only reinforce the sinister, apocalyptic look of your sled, but using a special mounting bracket you will be able to personalize even more by rotating yours 360-degree. Each stack contains an internal screen to prevent debris from going in your engine. You can bolt on any of these stacks to your existing carburetor support bracket or use an adjustable (from Sportster to big strokers) carburetor support bracket sold by the same company. This bracket even incorporates internal head breathers for a clean look. Sharp. You will not be surprised to know that the main business of this company is custom exhaust systems. Stainless Creations.