Milltek Secondary Catalyst Delete Pipe - BMW F80 M3 F82 M4 - SSXBM1032

Secondary catalyst delete pipe for BMW F80 M3 and F82 M4 models equipped with dual exhaust systems. This bypass pipe removes the secondary catalyst to improve exhaust gas flow and reduce backpressure restrictions caused by the factory secondary catalyst.

Fitment & Compatibility: Direct fit for use with Milltek Cat-Back Exhaust Systems. Compatible with both Milltek and OE primary downpipes. No modification required. Uses OEM mounting points and hangers.

Construction: T304L stainless steel, mandrel-bent tubing. Precision-engineered for factory-equivalent fitment and durability.

• Fits: BMW F80 M3 (S55 engine)
• Fits: BMW F82 M4 (S55 engine)
• Designed for pairing with Milltek Cat-Back System
• Works with OEM or Milltek primary downpipes
• T304L stainless steel construction
• OEM+ fitment — no cutting or welding required

Part of Milltek's comprehensive exhaust solution for modern BMW M performance cars, engineered to deliver measurable flow improvements when combined with a full cat-back system.

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

• BMW > 3 Series > F80 M3 & M3 Competition Saloon (Non OPF/GPF Models Only) > 2014 to 2018
• BMW > 4 Series > F82/83 M4 Coupe/Convertible & M4 Competition Coupe > 2014 to 2018

• 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.