Milltek Large Bore Downpipe & Hi-Flow Sports Cat - Mercedes A35 AMG 2.0 Turbo (W177 Hatch Only OPF/GPF Models) - SSXMZ135

Cast large bore downpipe with integrated HJS high-flow sports catalyst, engineered to increase gas flow and heat management for measurable performance gains. The 200-cell catalyst design reduces density versus OEM units (typically 500–600 cells) while maintaining emission compliance for street and track use.

Mandrel-bent T304L stainless steel construction with CNC-formed collector. HJS catalyst technology delivers freer-flowing exhaust gas passage and improved thermal efficiency. Direct bolt-on fitment using OEM mounting points—no modification required.

• 200-cell high-flow catalyst vs. OEM 500–600 cell density
• T304L stainless steel downpipe with hand-finished welds
• Cast collector for optimized gas velocity
• Street-legal emissions compliance
• Dyno-proven performance gain

Milltek manufactures downpipes and catalytic converters to the same precision standard as full exhaust systems.

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

Specifications

• Pipe diameter: 76.2mm (3.00")
• Fitting time: 2.5 to 3.5 hours, including removing the factory system
• Off-road / competition use only. Not legal for use on public roads in the US.

Fitment

• Mercedes > A-Class > A35 AMG 2.0 Turbo (Saloon/Sedan Only - Non OPF/GPF Models) > 2019 and Later
• Mercedes > CLA-Class > CLA35 AMG 2.0 Turbo Coupe & Shooting Brake (Non-OPF/GPF Models) > 2019 and Later

• 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.