BMW E90/E92 M3 - V2 Valved System
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From £2,533.19
Regular price
£2,980.22
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BMW M5 G90/G99 (UK/EU Spec) - GPF/OPF Bypass - Fits To Milltek Axle back and OE Downpipes
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Sale price
£1,739.71
Regular price
£2,046.72
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BMW M5 G90/G99 (UK/EU Spec) - GPF/OPF Bypass - Fits To OE Axle back and OE Downpipes
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Sale price
£1,750.32
Regular price
£2,059.20
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BMW M5 G90/G99 (UK/EU Spec) - Axle Back
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From £2,353.75
Regular price
£2,769.12
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Mini Cooper S/JCW F66 - OPF/GPF Bypass - Fits to Milltek System
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£168.11
Regular price
£197.78
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Mini Cooper S/JCW F66 - OPF/GPF Bypass - Fits to OE System
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£164.42
Regular price
£193.44
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Mercedes G63 W465 - Valved Cat Back
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From £3,042.44
Regular price
£3,579.34
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Mini Cooper S F56 (LCI Only) - GPF Back
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From £864.86
Regular price
£1,017.48
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F66 Mini Cooper S Non-Resonated OPF/GPF Back System for Milltek Design Diffuser only
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Sale price
From £1,030.18
Regular price
£1,211.98
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Mini Cooper S F66 - OPF/GPF Back System for Standard or Sport Diffuser
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Sale price
£679.64
Regular price
£799.58
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BMW G8X M3/M4 - Secondary Catalyst Bypass - X Pipe to OE Axle Back Only
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Sale price
£799.62
Regular price
£940.73
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BMW G8X M3/M4 - Secondary Catalyst Bypass - X Pipe to Milltek Axle Back Only
Regular price
Sale price
£805.31
Regular price
£947.42
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BMW G8X M3/M4 - Secondary Catalyst Bypass - Non Resonated to Milltek Axle Back Only
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Sale price
£762.61
Regular price
£897.19
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BMW G8X M3/M4 - Secondary Catalyst Bypass - Non Resonated to OE Axle Back Only
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Sale price
£756.92
Regular price
£890.50
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BMW G8X M3/M4 - GPF/OPF Bypass - X Pipe to Milltek Axle Back Only
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Sale price
£805.31
Regular price
£947.42
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BMW G8X M3/M4 - GPF/OPF Bypass - Non Resonated to Milltek Axle Back Only
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Sale price
£762.61
Regular price
£897.19
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BMW G8X M3/M4 - GPF/OPF Bypass - X Pipe to OE Axle Back Only
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Sale price
£799.62
Regular price
£940.73
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BMW G8X M3/M4 - GPF/OPF Bypass - Non Resonated to OE Axle Back Only
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Sale price
£756.92
Regular price
£890.50
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BMW X4 G02 LCI (ROW/USA) - Secondary Catalyst Bypass
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Sale price
£599.05
Regular price
£704.76
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Porsche 991.2 3.0 T/S/GTS - HJS HD 200CPSI Catalyst
Regular price
Sale price
£2,040.98
Regular price
£2,401.15
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Porsche 991.2 3.0 T/S/GTS - Rear Silencer
Regular price
Sale price
From £2,393.83
Regular price
£2,816.27
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Porsche 991.2 GT3 & GT3 RS - Rear Silencer Bypass
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Sale price
From £1,268.42
Regular price
£1,492.26
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BMW G87 M2 - Secondary Catalyst Bypass - Non Resonated
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Sale price
From £770.06
Regular price
£905.95
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BMW G87 M2 - Secondary Catalyst Bypass - Non Resonated to Milltek Axle Back Only
Regular price
Sale price
£716.00
Regular price
£842.35
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Ford Raptor 3.0 V6 - Active Valve Control
Regular price
Sale price
£296.77
Regular price
£349.14
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BMW G87 M2 - OPF/GPF Bypass Single Pipe 102mm - Non Resonated to Milltek Axle Back Only
Regular price
Sale price
£716.00
Regular price
£842.35
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BMW G87 M2 - GPF/OPF Bypass OPF/GPF Bypass Single Pipe 102mm - Non Resonated to OE Axle Back Only
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Sale price
£731.44
Regular price
£860.52
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Mercedes AMG GT/GTS/GTC (Non GPF Models) - Cat Back (Valved)
Regular price
Sale price
£2,851.85
Regular price
£3,355.12
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Ford Mustang 5.0 V8 GT500 - Active Valved Cat Back (Loudest)
Regular price
Sale price
From £2,435.01
Regular price
£2,864.72
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Ford Mustang 5.0 V8 GT500 - Active Valved Cat Back
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Sale price
From £2,454.89
Regular price
£2,888.11
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VW Arteon R 2.0 TSI 320ps (GPF Models) - OPF/GPF Back System
Regular price
Sale price
From £2,550.04
Regular price
£3,000.05
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Ford Raptor 3.0 V6 - Valved Cat Back
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Sale price
From £1,997.27
Regular price
£2,349.73
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Audi S4 B9 Sport Diff without Brace Bars - Cat Back
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Sale price
From £2,281.22
Regular price
£2,683.79
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Seat Cupra Formentor 1.4TSI e Hybrid (GPF Models) - OPF/GPF Back System
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Sale price
£1,122.26
Regular price
£1,320.31
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Seat Cupra Formentor 1.4TSI e Hybrid (GPF Models) - OPF/GPF Back System - ECE Approved System
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Sale price
£1,276.72
Regular price
£1,502.02
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VW Tiguan R-Line 2.0 TSI (LWB Models Only) - Cat Back
Regular price
Sale price
£1,335.91
Regular price
£1,571.66
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Exhausts
More sound. More flow. More character.
The right exhaust upgrade can completely transform how a car feels. From sharper throttle response to a deeper, more aggressive sound, performance exhaust components are one of the most popular upgrades for enthusiasts.
At Fifty9 Performance, we supply high quality performance exhaust parts in the UK designed to improve exhaust flow, unlock power and give your car the sound it deserves.
- Catback Exhaust Systems - improve sound, flow and overall performance
- Downpipes - reduce restriction and support higher power levels
- Sports Cats - performance catalytic converters for improved flow
- Exhaust Hardware - clamps, gaskets and installation components
If you are looking for performance exhaust systems, sports cats, downpipes or exhaust upgrades, explore our range and take your car’s sound and performance to the next level.

