Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button
Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button
Take total command of your Audi RS3 8V Sedan with the XFORCE 3.5” VAREX cat-back—OEM-integrated SmartBox control, race-bred flow, and on-demand sound that adapts to every drive.
Brand:
ES#:
5435140
Mfg#:
ESRS38VSVKSB
Ships in 1 Business Day
ON SALE!
SAVE 10%
$2474.99
This product was last offered at the strikethrough price on 06-30-2026
Transform your Audi RS3 8V Sedan with the XFORCE VAREX 3.5” valved cat-back OEM+ fitment, commanding race-ready sound on demand, and refined cruising at the push of a button.
Brand:
ES#:
5435121
Mfg#:
ESRS38VSVKCS
Ships in 1 Business Day
ON SALE!
SAVE 10%
$2294.99
This product was last offered at the strikethrough price on 06-30-2026
Unleash your Audi RS3 8Y Sedan with the XFORCE VAREX 3” cat-back—bolt-on performance, aggressive on-demand sound, and enhanced power for a truly exhilarating drive.
Brand:
ES#:
5435144
Mfg#:
ESRS38YSVKCS
Ships in 1 Business Day
ON SALE!
SAVE 10%
$2294.99
This product was last offered at the strikethrough price on 06-30-2026
This system will increase power, reduce weight, and provide a legendary exhaust note!
Requires a S4 Style Quad diffuser on non-S-line rear bumper or an S4 rear diffuser on S-line rear bumper.
This valved cat back system features wireless remote control and quad matte black tips - This system will increase power, reduce weight, and provide a legendary exhaust note!
*Must be used with quad tip rear diffuser from Audi S7 - 4K8807521DRU6*
Performance exhaust systems increase flows to improve throttle response and add power. Designed to reduce back pressure, our large selection of performance exhaust parts and performance exhaust systems is made from premium materials like stainless steel. Many are TIG welded and polished to make them as attractive as they are functional.
Lifetime Replacement
