This rear forward crossmember is fully tig welded 4130 chromoly tubing, with laser cut brackets. Each piece is much lighter than factory, around half the factory weight. These are a modular style design. This means you can buy the rear portion only, and use it with your stock control arms and front portion. You can add control arms and a front portion later. All the stock components will work with any of our tubular pieces. This is a NDD MOTORSPORTS product.