REMUS Axle-Back Rear Silencer/Back Box Muffler for SEAT Leon Cup

Turn up the drama on your Leon 5F Cupra with a premium rear muffler upgrade and quad 76 mm straight cut tips

Give your Mk3 Cupra the soundtrack and finish it deserves with this Austrian-built rear muffler assembly with left and right sections and four 76 mm straight cut chromed outlets. Precision crafted from stainless steel with a bead-blasted finish, it delivers a deeper, motorsport-inspired tone, sharper throttle response feel and an unmistakable quad exit look. EEC homologation means it is type-approved for road use, and the direct-fit design slots onto factory hangers for a clean, hassle-free install.

We have fitted this system in-house and customer feedback has been fantastic. Owners love the richer exhaust note, the quality of the welds and the perfect tip alignment. If you want a high-quality rear box upgrade that looks OEM-plus and sounds properly sporty, this is a superb choice.

Why enthusiasts choose this upgrade

• Free-flowing rear section for a louder, deeper sound without drone
• Quad exit 76 mm straight cut polished ends for an aggressive rear profile
• Low restriction design to aid exhaust gas flow
• Stainless steel construction with a durable bead-blasted finish
• Lightweight, direct replacement using OE mounting points
• Handcrafted in Austria with EEC homologation

Compatibility

• Vehicle: Seat Leon Cupra Mk3 5F, 3 door and 5 door
• Engine: 2.0 TSI turbo petrol
• Engine code: CJXH
• Power: 213 kW
• Model years: 2014 onwards
• Main pipework: 70 mm
• Tailpipe style: 4 x 76 mm straight cut, chromed
• Important note: for vehicles without a GPF particulate filter

Sound and performance

The free-flowing rear box brings out a stronger exhaust character with a crisp, aggressive tone on throttle and a refined note on cruise. The low back pressure design supports improved gas scavenging, helping the 2.0 TSI breathe more freely for a more responsive driving feel.

What you receive

Left and right rear muffler sections with integrated quad 76 mm straight cut chromed outlets, ready to bolt up to OEM mounting points.

Fitting service

Professional installation recommended. MJ Modifications offers fitting at our Warwickshire workshop. For a quote or to book, email info@mjmodifications.co.uk.

Search terms our customers use

Leon 5F Cupra quad tip exhaust, rear back box upgrade, performance rear muffler Seat Cupra, quad exit 76 mm tips, straight cut chrome tailpipes, Cupra MK3 2.0 TSI CJXH exhaust upgrade, EU approved sport exhaust, Austrian made stainless exhaust, 70 mm rear section, Cupra quad pipe rear box, Leon Cupra performance muffler, road legal EEC exhaust, no GPF models.