Cupra Leon 2.0 TSI 300 (20>) Cat/GPF Back Performance Exhaust

Unlock the sound your KL1 hot hatch deserves. This UK-made stainless system transforms the tone and character of the 2.0 TSI 300 PS platform, delivering a deeper, sportier note and sharper throttle response from the particulate filter rearwards. Built in premium T304 stainless with precision TIG welds and smooth mandrel bends, it is a serious exhaust upgrade for drivers who want more theatre without compromising quality.

Constructed in 76.2 mm (3 inch) pipework, this rear section replaces the mid pipe and tail section from the catalyst and particulate filter back, with options to fine tune volume and character to your taste. Our team and customers love the craftsmanship, the fit, and the way it wakes up the EA888 without drone on the road when specified with the quieter rear box.

Why choose this Cupra Leon KL1 exhaust upgrade

• 3 inch mandrel-bent tubing for smoother gas flow and crisp throttle response
• T304 stainless steel throughout with neat TIG welding for long-term durability
• Choice of sound levels: resonated, non-resonated, or race rear section
• Keeps the factory catalyst and GPF in place while elevating tone and presence
• Noticeable weight saving over the stock system
• All fittings and gaskets included for a straightforward install

Sound and weight data

Non-resonated with quieter road rear box test figures:

• Idle: 62.9 dB, an increase of 5.9 dB
• Static at 4,000 rpm: 82.4 dB, an increase of 4.4 dB
• Total system mass: 16.75 kg, saving 1.75 kg

Options to suit your build

• Resonated catback: includes centre silencer for a refined, sporty soundtrack. Optimised for non-GPF markets.
• Non-resonated catback: deletes the centre silencer for a louder, more aggressive note.
• Race rear section: smaller back box for maximum volume and motorsport character.
• Back box delete Venom setup: the most extreme option retaining OE catalyst and GPF. Non-resonated and very loud. For off-road and track use only.

Compatibility and recommended pairings

Designed for the 2020 onwards Cupra Leon 300 PS KL1 with the EA888 2.0 TSI engine. This rear system attaches from the particulate filter back. It also pairs perfectly with Cobra Sport’s high-flow sports cat or de-cat front pipe for those seeking additional flow. Optimised for vehicles without a GPF and for cars running the Cobra Sport sports cat or de-cat downpipe.

What you get

• Complete rear section in 76.2 mm stainless steel
• All required clamps, hangers, and gaskets
• Clear configuration choice to tailor sound level

Real-world development

Developed on track, tuned for the road. The mandrel-bent layout and enlarged pipework enhance exhaust gas velocity for a more engaging drive and a richer, motorsport-inspired tone. Like all Cobra Sport systems for the KL1, build quality is first rate and the fit is spot on. Our customers consistently rate the sound, finish and longevity.

Fitting service

Want it installed by specialists who know these cars inside out? Book professional fitting with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote.

Important notes

• Race and Venom options are very loud and intended for off-road or motorsport use where applicable.
• Sound levels and suitability may vary by market and vehicle specification.

Media

Developed on the track, released for the road.

Common search terms

Cupra Leon 300 exhaust upgrade UK, KL1 2.0 TSI catback, Cupra Leon 300PS stainless system, Cupra Leon GPF-back, Cupra Leon resonated exhaust, Cupra Leon non-resonated exhaust, Cupra Leon race back box, Cupra Leon back box delete, Cupra Leon sports cat, Cupra Leon de-cat downpipe, EA888 exhaust UK, performance exhaust Cupra Leon 2020 onwards.