Cat-back Milltek Seat Leon 5F - No primary muffler - non-resonated with rear muffler - Polished Dual Oval outlets

Milltek Sport Exhaust System for Seat Leon 5F Cupra ST

On the Seat Leon 5F Cupra ST, the factory exhaust is designed for quiet operation and regulatory compliance. This Milltek Sport stainless steel exhaust system gives the engine its voice back, with a refined, full, deep tone that has built the reputation of this British brand.

Technical Specifications

• Milltek part number: SSXSE172
• Part type: Exhaust system
• Configuration: non-resonated (no resonator)
• Details: No primary muffler, no resonator, with rear muffler: dual oval polished stainless steel tips
• Tube diameter: 76.2 mm (3 inch)
• Outlets: 152x76mm oval outlet
• Tip finish: polished stainless steel
• Material: aerospace-grade stainless steel
• Manufacturer: Milltek Sport (United Kingdom)

Compatible Vehicles

• Seat Leon 5F Cupra ST 2.0 TSI 280-290 hp (Wagon, 2015-2019, without DPF)

Not sure it fits your vehicle? Contact us with your chassis number (VIN) before ordering.

Most Frequently Asked Questions

• Resonated or non-resonated? This version is non-resonated (no resonator): it is the most expressive, with more crackle on lift-off. On the downside, a slight drone may occur at certain engine speeds on long trips. If you do a lot of highway driving, compare it with the resonated version.
• Installation: the system uses the original mounting points. A shop with the right equipment typically fits it in one to two hours.

Why choose Milltek Sport?

Milltek Sport designs and manufactures its exhaust systems in England, using mandrel-bent tubing to preserve the inner diameter and a fit developed on the actual vehicle. The result: a clean installation with no modifications required, and a sound tuned to remain pleasant for everyday driving.

Further Reading

• Cat-back exhaust, resonated or non-resonated: which one should you choose for your car?