The B9 S4 and S5 models deliver smooth gear changes through an advanced automatic transmission and Quattro all-wheel drive. As you increase the torque output of the EA839 V6, upgrading your drivetrain hardware ensures every ounce of power is transferred directly to the tarmac without unwanted slop.

• Differentials: Maximise your Quattro system's grip and cornering traction by upgrading your differentials.

• Engine Mounts & Bushes: Factory rubber mounts deflect heavily under hard acceleration. Swapping to stiffer engine mounts and polyurethane drivetrain bushes locks down the engine block for a truly connected feel.