Milltek Sport Suzuki Swift Sport 1.4 Booster Jet Cat-Back Exhaust System

Milltek Sport Suzuki Swift Sport 1.4 BoosterJet Cat-Back Exhaust System

The Milltek Sport cat-back exhaust for the Suzuki Swift Sport 1.4 BoosterJet is designed to replace the factory system from the catalytic converter back. It gives your Swift a sharper sound, improved flow, and a choice of stylish tailpipe finishes to match the look you want.

What this cat-back system does

This Milltek system uses freer-flowing pipework and performance rear silencers to reduce backpressure. Backpressure is the resistance exhaust gases face as they leave the engine. Reducing it helps the engine breathe more easily.

• Deeper, sportier exhaust note without sounding harsh
• Improved throttle response for a more eager feel
• Lighter than many stock systems due to thin-wall stainless steel
• Tailpipes that clean up the rear of the car and add a more purposeful look

Power gains from a cat-back alone are usually modest, but you should notice a sharper response and a more engaging drive, especially when combined with other upgrades like an intake or ECU remap.

Sound and driving experience

Milltek designs its systems to give a sporty tone that works for daily use. Compared to the stock Suzuki system, you can expect:

– A deeper sound at idle and low revs
– A clearer, more defined note under acceleration
– Controlled volume on the motorway to avoid droning in the cabin

This makes it well suited for drivers who use their Swift Sport every day, but still want it to feel special on back roads.

Construction and materials

The system is built from T304L stainless steel. This is a high-grade metal that resists rust and heat well, so it is ideal for exhausts in the UK climate. The pipework and silencers are mandrel bent, which means the tube keeps its full internal diameter through bends, helping gas flow stay smooth.

Each section is designed to be a direct replacement for the factory part, using the standard mounting points. This helps with alignment and keeps the system stable under load.

Tailpipe options

You can choose from several GT-115 style tailpipe finishes:

• Polished GT-115 – bright, classic stainless look
• Cerakote Black GT-115 – stealthy satin black coating
• Titanium GT-115 – lighter metal with a premium motorsport feel
• Burnt Titanium GT-115 – blue-tinted burnt effect for a more aggressive style
• Carbon Jet-115 – carbon fibre outer with a performance-inspired appearance

All options share the same fit and sound. The choice is mainly about the look you prefer at the rear of the car.

Fitment and compatibility

This cat-back exhaust is designed specifically for the Suzuki Swift Sport 1.4 BoosterJet models. That includes popular UK-spec Swift Sport 1.4 turbo petrol cars.

To be sure it fits your exact vehicle, please use the Progressive Parts vehicle lookup tool on the site or check the Vehicle Fitment tab for full details.

Professional installation is recommended so the system is aligned correctly, properly sealed, and free from knocks or vibration.