BMW M240i exhaust systems
45 exhaust systems for the G42 BMW M240i (B58 3.0L turbo inline-six) from 11 brands. Cat-back and axle-back systems, mufflers, tips and valve controllers. A cat-back replaces the exhaust from the catalytic converter rearward. An axle-back replaces only the rear section.
Before you order
- Fitment is listed by engine and drivetrain. Confirm both on the retailer page.
- Tip finish and size are often a separate selection on the retailer page.
- Sound-level rules vary by state. A louder system can fail an inspection or roadside check.
- Listings are read from the retailer's G42 M240i category. xDrive and rear-wheel-drive cars can use different parts. Confirm drivetrain and model year on the retailer page before ordering.
Brands on this page: Valvetronic Designs (25), Active Autowerke (4), ECS (4), Milltek Sport (3), Dinan (2), XForce (2), Akrapovic (1), Doorbusters (1), Eisenmann (1), MAD (1), Turner Motorsport (1).
Cat Back (16)

Doorbusters · Part no. 039018LADBKT
G42 M240i Performance Valved Cat-Back Exhaust With Aluminum Skid Plate
Unleash the pure sound of your B58-equipped M240i and protect vital undercarriage components from critical damage!
Eisenmann · Part no. B5472.01024
Performance Axle-Back Exhaust System
Improve the sound of your M240's exhaust and spice up the styling with quad 100mm slant-cut polished exhaust tips!

Milltek Sport · Part no. SSXBM1224-1
Catback Exhaust - Black Tips

Milltek Sport · Part no. SSXBM1237
Full Cat Back Exhaust - G42
Wake up your G42 M240i with this full catback system!

Turner Motorsport · Part no. 039018LA
G42 M240 Performance Valved Cat-Back Exhaust
Enhance your G Chassis with this beautiful cat-back exhaust from Turner. Full 3.0" design to release the naturally amazing performance and sound of your B58 powered BMW!

Valvetronic Designs · Part no. G42M240VSESBRRC
Valved Sport Cat-Back Exhaust System - Stainless - 1x1 Carbon Fiber Tips
Unleash the aggressive sound of your B58!
Valvetronic Designs · Part no. G42M240VSESBRBLK
Valved Sport Cat-Back Exhaust System - Stainless - Black Tips
Unleash the aggressive sound of your B58!
Valvetronic Designs · Part no. G42M240VSESBRBRS
Valved Sport Cat-Back Exhaust System - Stainless - Brushed Steel Tips
Unleash the aggressive sound of your B58!
Valvetronic Designs · Part no. G42M240VSESBRBRT
Valved Sport Cat-Back Exhaust System - Stainless - Burnt Tips
Unleash the aggressive sound of your B58!
Valvetronic Designs · Part no. G42M240VSESBRFC
Valved Sport Cat-Back Exhaust System - Stainless - Forged Carbon Fiber Tips
Unleash the aggressive sound of your B58!
Valvetronic Designs · Part no. G42M240VSESTIRC
Valved Sport Cat-Back Exhaust System - Titanium - 1x1 Carbon Fiber Tips
Unleash the aggressive sound of your B58!
Valvetronic Designs · Part no. G42M240VSESTIBLK
Valved Sport Cat-Back Exhaust System - Titanium - Black Tips
Unleash the aggressive sound of your B58!
Valvetronic Designs · Part no. G42M240VSESTIBRS
Valved Sport Cat-Back Exhaust System - Titanium - Brushed Steel Tips
Unleash the aggressive sound of your B58!

Valvetronic Designs · Part no. G42M240VSESTIBRT
Valved Sport Cat-Back Exhaust System - Titanium - Burnt Tips
Unleash the aggressive sound of your B58!
Valvetronic Designs · Part no. G42M240VSESTIFC
Valved Sport Cat-Back Exhaust System - Titanium - Forged Carbon Tips
Unleash the aggressive sound of your B58!

Valvetronic Designs · Part no. G42M240VSESTTBRT
Valved Sport Cat-Back Exhaust System - Titanium - Raw Titanium Burnt Tips
Unleash the aggressive sound of your B58!
Mufflers (13)

ECS · Part no. 044081LA01
Build-Your-Own Universal Vacuum-Actuated Valved Mufflers Kit
Choose between a 2.5" or 3.0" valved mufflers to complete your custom exhaust.

Valvetronic Designs · Part no. UVM63MMTSTYLEX1
Universal T-Style Valved Muffler Kit - Single Inlet / Dual Outlet - 2.5" (63mm) - 1 Muffler
Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button

Valvetronic Designs · Part no. UVM76MMTSTYLEX1
Universal T-Style Valved Muffler Kit - Single Inlet / Dual Outlet - 3.0" (76mm) - 1 Muffler
Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button

Valvetronic Designs · Part no. UVM63MMDUALOUTX1
Universal Valved Muffler Kit - Single Inlet / Dual Outlet - 2.5" (63mm) - 1 Muffler
Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button

Valvetronic Designs · Part no. UVM63MMDUALOUTX2
Universal Valved Muffler Kit - Single Inlet / Dual Outlet - 2.5" (63mm) - 2 Mufflers
Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button

Valvetronic Designs · Part no. UVM76MMDUALOUTX1
Universal Valved Muffler Kit - Single Inlet / Dual Outlet - 3.0" (76mm) - 1 Muffler
Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button

Valvetronic Designs · Part no. UVM76MMDUALOUTX2
Universal Valved Muffler Kit - Single Inlet / Dual Outlet - 3.0" (76mm) - 2 Mufflers
Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button

Valvetronic Designs · Part no. UVM.63MM.X1
Universal Valved Muffler Kit - Single Inlet / Single Outlet - 2.5" (63mm) - 1 Muffler
Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button

Valvetronic Designs · Part no. UVM.63MM.X2
Universal Valved Muffler Kit - Single Inlet / Single Outlet - 2.5" (63mm) - 2 Mufflers
Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button

Valvetronic Designs · Part no. UVM.76MM.X1
Universal Valved Muffler Kit - Single Inlet / Single Outlet - 3.0" (76mm) - 1 Muffler
Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button

Valvetronic Designs · Part no. UVM.89MM.X2
Universal Valved Muffler Kit - Single Inlet / Single Outlet - 3.0" (76mm) - 2 Mufflers
Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button

Valvetronic Designs · Part no. UVM.76MM.X2
Universal Valved Muffler Kit - Single Inlet / Single Outlet - 3.0" (76mm) - 2 Mufflers
Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button

Valvetronic Designs · Part no. UVM.89MM.X1
Universal Valved Muffler Kit - Single Inlet / Single Outlet - 3.5" (89mm) - 1 Muffler
Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button
Axle Back (7)
Active Autowerke · Part no. 11-125B
Active Autowerke G4X BMW M240i Valved Rear Axle-back Exhaust (Black Tips) - G4X M240i
Get the exhaust growl your car should have came with from the factory!
Active Autowerke · Part no. 11-125CB
Active Autowerke G4X BMW M240i Valved Rear Axle-back Exhaust (Carbon Over Black Chrome Tips) - G4X M240i
Get the exhaust growl your car should have came with from the factory!
Active Autowerke · Part no. 11-125C
Active Autowerke G4X BMW M240i Valved Rear Axle-back Exhaust (Carbon Tips) - G4X M240i
Get the exhaust growl your car should have came with from the factory!
Active Autowerke · Part no. 11-125
Active Autowerke G4X BMW M240i Valved Rear Axle-back Exhaust(Brushed Tips) - G4X M240i
Get the exhaust growl your car should have came with from the factory!

Akrapovic · Part no. S-BM/T/32H
Akrapovic Titanium Slip-On Line Exhaust
Improved the sound of your BMW's exhaust with this performance axle-back exhaust from Akropovic

Dinan · Part no. D660-0098-BLK
Performance Valved Axle-Back Exhaust - Black Tips
Improve your exhaust tone and BMW's appearance - Reduces weight and increases power by +6HP/+5LB-FT

Dinan · Part no. D660-0098
Performance Valved Axle-Back Exhaust - Polished Tips
Improve your exhaust tone and BMW's appearance - Reduces weight and increases power by +6HP/+5LB-FT
Valve Controller (7)

ECS · Part no. 004788LA01
Remote Vacuum Exhaust Valve Control Kit
Control your exhaust valves with the click of a button! Includes a standalone vacuum pump, wiring, vacuum hose, and controllers.

MAD · Part no. MAD-144
MAD Exhaust Valve Controller Essential
Manually control muffler valve funtions with the click of a button with this plug and play kit
Retailer fitment note: For vehicles with electronic valves only
Milltek Sport · Part no. SSXBM1275
Active Valve Control
Easy change the volume of your exhaust with the push of a button!

Valvetronic Designs · Part no. VTD.EVH
Electronic Exhaust Valve Control Kit - 1 Valve Actuator + 1 Valve To Controller Wire
Enables the control of a single electronic exhaust valve
Retailer fitment note: Please visually confirm the exhaust valve actuator installed on your vehicle prior to purchase or installation - Only compatible with systems requiring a single electric valve actuator

Valvetronic Designs · Part no. VTD.EVH.2
Electronic Exhaust Valve Control Kit - 2 Valve Actuators + 2 Valve To Controller Wires
Enables the control of two electronic exhaust valves
Retailer fitment note: Please visually confirm the exhaust valve actuator installed on your vehicle prior to purchase or installation - Only compatible with systems requiring two electric valve actuators
XForce · Part no. VK05-ACTUATOR
XForce Varex Toggle Switch
Control your Varex valve with the press of a button
XForce · Part no. VKSB01-ECU-MODUL
Xforce Smartbox Varex Muffler ECU Upgrade Module
Manually and automatically adjust the exhaust sound level
Cutout (2)

ECS · Part no. 020923ECS02
Build-Your-Own Universal Vacuum-Actuated Exhaust Cutout Kit - Dual Cutouts
Increase HP/TQ and activate a full race exhaust with the flip of a switch, with our ECS Vacuum-Actuated Exhaust Cutouts

ECS · Part no. 020923ECS01
Build-Your-Own Universal Vacuum-Actuated Exhaust Cutout Kit - Single Cutout
Increase HP/TQ and activate a full race exhaust with the flip of a switch, with our ECS Vacuum-Actuated Exhaust Cutout
More BMW M240i parts
- BMW M240i downpipes
- BMW M240i exhaust tips
- BMW M240i intakes
- BMW M240i charge pipes
- BMW M240i tunes & engine software
- BMW M240i intercoolers & charge cooling
- BMW M240i turbochargers & turbo parts
- BMW M240i fuel & ignition
- BMW M240i cooling upgrades
- BMW M240i engine & mounts
- BMW M240i drivetrain
- BMW M240i coilovers
- BMW M240i lowering springs
- BMW M240i suspension & chassis
- BMW M240i brake upgrades
- BMW M240i wheels
- BMW M240i wheel spacers & hardware
- BMW M240i front lips & splitters
- BMW M240i spoilers & wings
- BMW M240i rear diffusers
- BMW M240i exterior & aero
- BMW M240i interior
- BMW M240i lighting