Aftermarket Exhaust Modifications

BMW M340i Exhaust Upgrades (G20 & G21)

Increase the noise & performance of your BMW G20 / G21 M340i's B58 engine with an aftermarket exhaust system upgrade. Shop full exhaust systems & more.

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BMW B58 Gen 2 OPF Decat Downpipe CERAMIC COATED (G Series M240i, M340i, M440i, Z4 M40i, Supra A90 & more)
SLN PerformanceBMW B58 Gen 2 OPF Decat Downpipe CERAMIC COATED (G Series M240i, M340i, M440i, Z4 M40i, Supra A90 & more)
£256.00GBP £320.00GBP
Save £99.00
BMW B58 Gen 2 OPF Sports Cat Downpipe CERAMIC COATED (G Series M240i, M340i, M440i, Z4 M40i, Supra A90 & more)
SLN PerformanceBMW B58 Gen 2 OPF Sports Cat Downpipe CERAMIC COATED (G Series M240i, M340i, M440i, Z4 M40i, Supra A90 & more)
£396.00GBP £495.00GBP
Milltek Sport Exhaust Valve Controller For BMW B58 Gen2 (G42 M240i, G20 M340i & Toyota GR Supra)
Milltek SportMilltek Sport Exhaust Valve Controller For BMW B58 Gen2 (G42 M240i, G20 M340i & Toyota GR Supra)
£405.60GBP
Save £442.35
Valvetronic Designs BMW G20 M340i & G22 M440i Valved Sport Exhaust System Valvetronic Designs BMW G20 M340i & G22 M440i Valved Sport Exhaust System
Valvetronic DesignsValvetronic Designs BMW G20 M340i & G22 M440i Valved Sport Exhaust System
From £2,506.65GBP £2,949.00GBP
Akrapovic BMW G20 G21 M340i & G26 M440i Titanium Exhaust Akrapovic BMW G20 G21 M340i & G26 M440i Titanium Exhaust
AkrapovicAkrapovic BMW G20/G21 M340i & G26 M440i Gran Coupe Evolution Line Titanium Exhaust System
£7,128.00GBP
Akrapovic BMW G20 G21 M340i & G26 M440i OPF Back Exhaust
AkrapovicAkrapovic BMW G20/G21 M340i & G26 M440i Gran Coupe OPF/GPF Slip On Line Titanium Exhaust System
£5,783.00GBP
Akrapovic BMW M340i & M440i OPF Exhaust Midpipe
AkrapovicAkrapovic BMW M340i & M440i OPF/GPF Stainless Steel Exhaust Link Pipe Set (G20, G21, G22, G23 & G26)
£1,345.00GBP
Akrapovic BMW M340i & M440i Exhaust Sound Kit Akrapovic BMW M340i & M440i Exhaust Sound Kit
AkrapovicAkrapovic BMW M340i & M440i Exhaust Sound Kit (G20, G21, G22, G23 & G26)
£467.52GBP
Save £390.80
Remus BMW M340i/M440i xDrive Axle-Back System (G20/G22)-R44 Performance Remus BMW M340i/M440i xDrive Axle-Back System (G20/G22)-R44 Performance
RemusRemus BMW M340i/M440i xDrive Axle-Back System (G20/G22)
From £1,563.20GBP £1,954.00GBP
Scorpion GPF Back Exhaust System For BMW G20 M340i xDrive Scorpion GPF Back Exhaust System For BMW G20 M340i xDrive
Scorpion ExhaustsScorpion GPF Back Exhaust System For BMW G20 M340i xDrive
From £966.24GBP
Scorpion Exhaust GPF Delete Exhaust Midpipe For BMW G20 M340i xDrive Scorpion Exhaust GPF Delete Exhaust Midpipe For BMW G20 M340i xDrive
Scorpion ExhaustsScorpion Exhaust GPF Delete Exhaust Midpipe For BMW G20 M340i xDrive
£366.00GBP
Save £27.00
Leib BMW B58 OPF Delete Cables (F20/F22/F30/F32/G20/G22/G42)-R44 Performance
LEIB EngineeringLeib BMW B58 OPF Delete Cable (F20/F22/F30/F32/G20/G22/G42)
£152.99GBP £179.99GBP
Save £54.00
Leib BMW G Series & F Series CAN MIL Delete Module For OPF & Cat Errors
LEIB EngineeringLeib BMW G Series & F Series CAN MIL Delete Module For OPF & Cat Errors
£305.99GBP £359.99GBP
Save £78.00
Leib BMW G Series CAN BUS Pro 1 Valve (G42/G20/G22 etc)-R44 Performance Leib BMW G Series CAN BUS Pro 1 Valve (G42/G20/G22 etc)-R44 Performance
LEIB EngineeringLeib BMW G Series CAN BUS Pro 1 Valve (G42/G20/G22 etc)
£441.99GBP £519.99GBP
Save £100.50
Leib BMW G Series B58 B48 CatOPF Delete With CAN BUS Pro Functions - R44 Performance
LEIB EngineeringLeib BMW M240i/M340i/M440i B58/B48 Cat/OPF Delete Kit With CAN BUS Pro Functions (G42/G20/G22/F40/F44)
£569.49GBP £669.99GBP
Save £3.15
Genuine BMW Exhaust Clamping Bush (70mm) 18307560780
Genuine BMWGenuine BMW Exhaust Clamping Bush Pipe Sleeve (70mm) 18307560780
£36.21GBP £39.36GBP
Save £37.50
BMW Helical Exhaust Valve 2.9inch SBS Type EV70532-MX0-33 BMW Helical Exhaust Valve 2.9inch SBS Type EV70532-MX0-33
Helical TechnologyHelical Technology BMW Helical Exhaust Valve 2.9inch SBS Type (Single)
£212.49GBP £249.99GBP
dAHLer BMW Exhaust Flap/Valve Controller-R44 Performance dAHLer BMW Exhaust Flap/Valve Controller-R44 Performance
daHlerdAHLer BMW Exhaust Flap/Valve Controller
£571.99GBP