SuperPro's ALOY0001K offers a number of significant upgrades in a single kit. First the alloy control arms themselves are both lighter and stronger than the steel arms used on VW's MK5 models, and stronger than the steel arms used on the MK6 models. Reducing unsprung weight and adding rigidity are an ideal place to start any series of upgrades. Second; anti-lift geometry and additional positive caster are designed into the rear mount assembly. This brings weight and accuracy to the steering absent in the OEM configuration as well as dynamic camber gain with steering angle to put more of the tire's contact patch in contact with the tarmac in corners elevating cornering grip. Third; SuperPro's proprietary polyurethane compound are used in the forward and rearward bushing assemblies offering a massive upgrade over the soft and heavily voided OEM bushings. This reduces deflection and movement resulting in more consistent tire performance - better traction, better grip and reduced wheel hop. The smaller inner bushings at the rear also features a bonded steel shell to reduce any friction during suspension travel to allow your springs and dampers to deliver the intended performance.