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M&K Exhaust

M&K Exhaust manufactures handcrafted stainless steel mufflers for your vintage, mid , or late model Porsche 911 and 914-6.

M&K Exhaust mufflers are simply the highest quality mufflers available on the market today.

All M&K Exhaust mufflers are produced utilising 321 stainless steel. 321 stainless steel is used in the aviation industry for it's higher quality alloys which withstand high heat applications.

M&K Exhaust is the only muffler manufacturer to offer 321 stainless exhaust systems for Porsche automobiles. Most other manufacturers use lower quality 304 stainless which is not as durable as 321 in handling the constant heat cycling exposure produced during the lifetime of an automobile. 304 is also not as resilient as 321 in withstanding the acids given off by an internal combustion engine. If you are looking for the best a lifetime product can offer, 321 stainless steel must be your choice.

M&K Exhaust mufflers are designed to create a scavenge within the shell of the muffler to draw the exhaust out of the engine as quickly as possible.

M&K Exhaust mufflers are also the lightest mufflers on the market weighing only 6.4 Kg (14 lbs). They beat the nearest competitor by 2.7 Kg (6 lbs) and an OEM muffler by 4.5 - 6.8 Kg (10-15 lbs).

This weight savings translates into effective horsepower much like stripping out the interior, or using carbon fiber panels.

M&K Exhaust has a number of models for early, mid, and late model 911's (up to 1989). Late model setups are available in either dual or single inlet configurations.

M&K also manufacture mufflers for 914-6's. Should you require a custom design and fabrication solution, then M&K can provide you with what you are looking for via CoolCava Racing.

 

Muffler Type
Fits
Price Starting From*

911R Muffle

65 - 89 with some mods required for impact bumper cars

£420 / 6000SKr

911 Sport

65 - 89
£420 / 6000SKr

911/ 914-6 2 In 2 Out

70 - 76 914s with six cylinder engine
74 - 89 911 (need to cut second outlet in rear valance)
65 - 73 911 (with modifications possible)
£420 / 6000SKr

911/914-6 2 In 1 Out

70 - 76 914s with six cylinder engine
74 - 89 911 (need to cut second outlet in rear valance)
65 - 73 911 (with modifications possible)
£420 / 6000SKr

911 1 in 1 out

78 - 89 SC and Carrera

£420 / 6000SKr

911 1 in 2 out

78 - 89 SC and Carrera (need to cut second outlet in rear valance)
£420 / 6000SKr
911 2 in GT3 Look
78 - 89 SC and Carrera (need to modify rear valance)
£420 / 6000SKr

Additional Hardware
Price Starting From*
Install kit (Clamp/gasket/stainless hardware)
£22.50 / 325SKr
Uncut replacement fiberglass valance
Dual outlet replacement fiberglass valance
 
All prices are for non polish mufflers with polished tail pipes except for the sport and GT3 style mufflers.
Polished mufflers are available, please contact us for pricing and to discuss your individual needs.

*All quoted prices are subject to change due to fluctuation in US exchange rates and shipping costs to mainland
Europe, and are for indication only. Please contact us for current price and to discuss package deals (discount given
on bulk orders).

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