This swing arm reuses the stock Bearing Carrier and Brake Stay Plate. This swing arm can be used with our after market long travel linkage set up or with the stock linkage set up. Uses YFZ450 axle, break calipers, etc. (Brake caliper has been rotated forward). This swing arm has a 4 bolt clamp rear tube, stock location skid plate mounts for the XC rider, and chain guide guard mounts for the MX rider. Extension of your swing arm will require the need to purchase a longer brake line. Made from 4130 Chromoly Steel, fully TIG Welded, and Powder coated with a glossy finish that houses that HOUSER Logo, this a-arm set not only has the look, but it will hold up to anything that you can put it through