VW Golf GTI MK4 1.8T 20V (1J) 1998-2004 Cobra Sport Stainless Cat Back Exhaust System - 2.5in/63.5mm - Resonated or Non-Resonated - Golf IV/4 1.8 Turbo Sports Exhaust, Back Box & Centre Section Upgrade

Unlock the soundtrack of your Golf IV 1.8T with a precision-built rear system

Give your 1J-chassis hot hatch the voice it deserves with a Cobra Sport rear section upgrade. Engineered for a crisper tone, cleaner looks and long-term durability, this system transforms the character of your 1.8T while retaining the factory catalytic converter for a hassle-free upgrade.

Built in 63.5 mm pipework, this cat-back setup runs from the outlet of the converter to the tailpipe, replacing the centre and rear sections. The result is a freer-flowing path that sharpens throttle response and delivers a purposeful note without drone when specified with the resonated option. Choose non-resonated if you want a louder, more aggressive soundtrack.

Why enthusiasts choose this system

• Tailored for Golf GTI MK4 1.8T 1998 to 2004 - 1J platform
• 63.5 mm 2.5 inch tubing for improved flow and a sportier tone
• Resonated or non-resonated choices to suit daily driving or spirited use
• Direct fit from the catalytic converter back - no welding required
• All required gaskets and fittings included for a clean install
• Quality you can trust - Cobra Sport performance range is fully guaranteed

Sound options

• Resonated - retains the centre silencer for a refined, subtle growl
• Non-resonated - deletes the centre silencer for a louder, more motorsport-inspired note

Fitment note

Your car may require the 4Motion rear valance to accommodate the tailpipe cut-out. VW part number: 1J6807521C. This is available from your local Volkswagen retailer.

Please note - some images show the non-resonated setup.

Perfect for searchers looking for

Golf MK4 1.8T sports system, Golf 4 GTI rear section, 1J 1.8 turbo exhaust upgrade, stainless catback for Golf 1.8T, back box and centre section replacement, 63.5 mm performance system, GTI 1.8T tailpipe upgrade, Golf IV 1.8T catback, 1998 1999 2000 2001 2002 2003 2004 GTI exhaust, performance back box for 1.8T.

Installed by MJ Modifications

We have fitted these systems in our Warwickshire workshop and customers love the fit, finish and tone. Want it supplied and installed by specialists who know the platform inside out? Contact MJ Modifications for a fitting quote - info@mjmodifications.co.uk.

Media

Cobra Sport Exhausts VW promotional video.

British Touring Car Championship and UK VAG Events - Cobra Sport Brand Video.

Developed on the Track, Released for the Road - Motorsport Proven Exhaust Technology.