Milltek Large Bore Downpipe Hi-Flow Sports Cat - VW Golf MK4 GTI - SSXVW050

Milltek Large Bore 3" Downpipe with Hi-Flow Sports Catalyst for Audi A3 1.8T, VW Golf MK4 GTI, Seat Leon 1.8T, Skoda Octavia RS 1.8T, and related VAG 1.8T platforms (2000-2005). Direct fitment to OEM or Milltek Cat-Back exhaust systems. T304L stainless steel construction, mandrel-bent for optimized flow.

Engineered to improve exhaust scavenging and reduce backpressure across the 1.8T engine range. The high-flow sports catalyst maintains emissions compliance while supporting Stage 2 ECU tuning. Hand-finished T304L stainless construction resists corrosion and delivers lasting durability. OEM hangers and mounting points ensure no modification required for installation.

Vehicle Fitment:

• Audi A3 1.8T 2WD 3 & 5 door (2000-2005)
• Seat Leon 1.8T Sport and Cupra 180PS (2000–2005)
• Skoda Octavia RS 1.8T 180 and 1.8T 150 (2000-2005)
• Volkswagen Bora 1.8T 2WD (2000–2005)
• Volkswagen Golf MK4 GTI 1.8T (2000-2005)
• Volkswagen Golf MK4 337 Anniversary 180bhp (2002–2004)
• Volkswagen Jetta MK4 1.8T 2WD (1999–2005)

Designed to pair with Milltek Cat-Back systems for complete performance exhaust solutions.

Designed and manufactured in the UK with 40+ years of performance exhaust heritage. Tested at the Nurburgring.

Specifications

• Pipe diameter: 76.2mm (3.00")
• Off-road / competition use only. Not legal for use on public roads in the US.

Fitment

• Seat > Leon > 1.8T Sport and Cupra > 2000 to 2005
• Volkswagen > Golf > MK4 1.8T 2WD > 1998 to 2004
• Volkswagen > Golf > MK4 337 Anniversary > 2002 to 2004
• Volkswagen > Golf > MK4 GTI 1.8T > 1998 to 2004
• Volkswagen > Jetta > MK4 1.8T 2WD > 1999 to 2005

• Free US shipping on orders over $250.
• Free pickup at our Dallas shop, usually ready within 24 hours.
• Unused parts can be returned within 30 days. Tunes, opened electronics, merch and installed parts are final sale.
• Want it installed? Book the install at thegbmotors.com.

Full details are on our shipping and returns page.