Performance Exhaust Systems — Price Comparison

Performance Exhaust Systems for 2017 Audi Tt

A cat-back exhaust changes how a 2017 Audi Tt sounds more than how fast it goes — and that's the honest pitch. Material, muffler design, and tip styling separate the tiers; actual power gains on an otherwise stock engine are usually single digits.

We compared 3 offers across major retailers for the 8S platform (2015–2023 8S). Prices range from $899.99 to $1299.99 as of the last update.

Best picks

• Best overall: A 304 stainless cat-back from an established brand with a documented sound profile — drone at highway cruise is the most common regret, so check in-cabin clips, not just fly-by videos.
• Best budget: An aluminized-steel system. It sounds nearly identical but trades corrosion life — fine in dry climates, shorter-lived where roads are salted.

What to look for

• Axle-back swaps are cheaper and reversible; cat-back systems change more of the note.
• 304 stainless outlasts 409 and aluminized steel significantly in winter-salt states.
• Resonator deletes amplify drone on long drives — listen to interior recordings first.

Enthusiast platform note: this chassis has a deep aftermarket, so OEM-replacement parts listed here sit alongside dedicated performance lines. If you're modifying rather than maintaining, check the brand's motorsport catalog for upgraded versions of the same part.

Fitment note

Verified for 2017 Audi Tt (8S). Fits 2015–2023 8S generation unless trim-specific exclusions apply. Confirm trim and option codes before ordering.

Prices are affiliate-linked estimates. Confirm current pricing at the merchant before purchase.