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Milltek cat-back cat-back with polished quad GT-100 tips for the BMW M440i G22 }
Milltek cat-back cat-back with Cerakote black quad GT-100 tips for the BMW M440i G22 }
Milltek axle-back part with polished quad GT-100 tips for the BMW M440i G22 }
Set of four polished Milltek GT-100 exhaust tips offered for the BMW M440i G22 }
Milltek axle-back part with Cerakote black quad GT-100 tips for the BMW M440i G22 }
Set of four Cerakote black Milltek GT-100 exhaust tips offered for the BMW M440i G22 }
Milltek cat-back cat-back that reuses the factory tips for the BMW M440i G22 }
Milltek axle-back part that reuses the factory tips for the BMW M440i G22 }
Milltek cat-back cat-back with polished quad GT-100 tips for the BMW M440i G22
Milltek cat-back cat-back with Cerakote black quad GT-100 tips for the BMW M440i G22
Milltek axle-back part with polished quad GT-100 tips for the BMW M440i G22
Set of four polished Milltek GT-100 exhaust tips offered for the BMW M440i G22
Milltek axle-back part with Cerakote black quad GT-100 tips for the BMW M440i G22
Set of four Cerakote black Milltek GT-100 exhaust tips offered for the BMW M440i G22
Milltek cat-back cat-back that reuses the factory tips for the BMW M440i G22
Milltek axle-back part that reuses the factory tips for the BMW M440i G22

Milltek Sport Cat-Back Exhaust - 2021-2024 BMW M440i G22 Coupe

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Brand: Milltek SportSKU / Part #: SSXBM1157
$1,814.45
$2,134.65
$1,814.45
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Subtotal: $1,814.45
Milltek Sport Cat-Back Exhaust - 2021-2024 BMW M440i G22 Coupe
Subtotal: $1,814.45
Not sure it fits? Text us your VINSee all fitment

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Overview

This Milltek Sport cat-back exhaust fits the 2021-2024 BMW M440i and M440i xDrive coupe (G22) with the 3.0 liter B58 turbo six. For the G22 M440i coupe, Milltek offers a lower-cost particulate-filter-back axle section and a full bolt-on cat-back, each with the factory tips or quad GT-100 tips in polished or Cerakote black. Each system is built for this exact chassis, so it follows the factory routing, hangs from the stock mounts and keeps the ground clearance of the original exhaust. Compared with the factory steel parts it is lighter, flows more freely and gives the engine a clearer, stronger voice under load, without the harsh highway drone of a cheap straight pipe. The BMW M440i G22 parts are T304L stainless steel with mandrel-bent tubing, which keeps the pipe at full size through each bend and resists corrosion for years. The cat-back bolts on with no cutting or welding; the axle-back needs the factory pipe cut at the joint to fit. It swaps the factory exhaust from the catalytic converters back, using 76.2 mm (3 in) T304L stainless steel pipework, and bolts to the factory mounting points.

How to Choose

Start with the System. Axle-Back (Cuts Factory System) replaces the rear section only; the factory pipe has to be cut to fit it, so it is the lower-cost option. Cat-Back (Bolt-On, No Cutting) replaces everything from the cats or particulate filter back and bolts on without cutting the factory system.

Then pick an Exhaust Tip Finish: Factory Tips (reuses the factory tailpipe trims), Polished Quad GT-100 (bright polished stainless), Cerakote Black Quad GT-100 (a black Cerakote ceramic coating). The finish changes the look only, not the sound.

Valve Remote: choose Add Valve Remote to include the Milltek Active Valve Control remote, a plug-and-play module that lets you open and close the exhaust valves yourself. It is only offered on systems that keep valves.

Planning more power? Milltek also makes downpipes for the BMW M440i G22.

Features

  • 76.2 mm (3 in) T304L stainless steel pipework
  • Mandrel-bent and made to bolt to the factory mounting points
  • 3 tip finishes

What's Included

  • Left and right axle pipes
  • Rear silencer assembly
  • The other Milltek parts for the version you choose
  • Exhaust tips in the finish you choose
  • The valve remote with two key fobs, if you add it

Specifications

Spec Value
Brand Milltek Sport
Part numbers (MPN) Axle-Back (Cuts Factory System): SSXBM1157, SSXBM1158, SSXBM1159. Valve remote: SSXBM1275. Cat-Back (Bolt-On, No Cutting): SSXBM1272, SSXBM1273, SSXBM1274
Type Cat-Back Exhaust
Material T304L stainless steel
Pipe diameter 76.2 mm (3 in)
Race product Yes, per Milltek. For off-road and track use
Shipping (one box) 40 x 30 x 12 in, 72.8 lb

Fitment Notes

  • Fits the 2021-2024 US-market BMW M440i coupe (G22). The same systems fit the G20 M340i sedan. Please call us to confirm fitment on 2025 and later facelift cars.
  • Every version keeps the factory exhaust valves; the optional Milltek Active Valve Control remote lets you switch them yourself. Factory Tips versions reuse your original tip trims.

Questions about fitment? Call (310) 231-0292 or text (310) 886-3111.

Year Make Model Chassis Engine
2021-2024 BMW M440i / M440i xDrive Coupe G22 3.0L B58 Turbo I6
Fitment
YearMakeModel
2021–2026BMWM440i

Not sure? Text us your VIN and we’ll confirm.

Shipping & returns

Shipping: Orders ship via UPS, FedEx or USPS, from our facility near Los Angeles or directly from the manufacturer. Rates for many items are weight-based and shown at checkout. If you need it by a certain date, text us before you order.

Returns: Unused items in brand-new condition and original packaging can be returned within 30 days of the invoice date, with a 25% restocking fee unless otherwise specified. In some cases we can offer a lower fee with the balance as store credit. Shipping charges aren't refundable in either direction unless approved by AutoTalent.

Not returnable: special-order or custom items, and anything that has been installed, modified or altered.

Cancellations: free if the item is out of stock or we miss the ETA you agreed to. Other cancellations carry a 5% processing fee to cover card fees we can't recover. Special-order items can't be cancelled.

Damaged in transit? Report it to the carrier and to us within 48 hours, keep all packaging, and don't send anything back without our written approval.

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