2002-2005 Audi A4 Quattro

APR’s software and tuning solutions deliver refined performance engineering—precision ECU and TCU calibrations, along with inline modules, that elevate power, transmission response and driving dynamics while maintaining the integrity of your European vehicle’s factory systems.

APR’s Engine Hardware delivers true performance engineering—meticulously crafted intake systems, turbocharger upgrades and support components built to integrate with calibration upgrades and boost your vehicle’s breathing, response and power delivery on VW, Audi, Porsche and other European platforms.

APR wheels merge motorsport engineering with streetcraft — flow-formed and forged alloy constructions deliver reduced unsprung weight, optimized strength and OEM-plus fitment for Volkswagen Group performance vehicles.

APR’s brake systems bring refined European engineering to braking — from advanced street-pads and direct-replacement rotors to full-big-brake kits featuring billet calipers, floating rotors and braided steel lines. Designed for daily driving, spirited use and track duty.

Show of your APR Pride!