Cobra
Cobra BMW F20 F21 M135i Cat-Back Performance Exhaust
Cobra BMW F20 F21 M135i Cat-Back Performance Exhaust
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Before you can continue, you must agree to all of the following terms:
The RM Series is comprised of a damper cartridge secured within a threaded outer body. This specific design requires a lubricating grease to be applied during the assembly process between the two damper and threaded body to avoid metal-to-metal contact. In order to keep the two components from touching each other and generating noise transmission you will need to periodically clean out the old grease and apply new grease.
This is a simple process that can be done with just a few common tools. It does not require you to open the internals of the dampers themselves and therefore you do not need to have the dampers re-pressurized after carrying out this procedure. Please contact us on info@mlperformance.co.uk for more information and a step-by-step guide on how to complete this maintenance.
As a result of this required maintenance, we do not recommend the RM Series for road use over the BR Series or ER Series.
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Fitting service at Xatrix, West Yorkshire
We can offer a fitting service for this part. Contact us for a fitting quote.
This product is no longer available and has been replaced with the Cobra BMW F20 F21 M135i Cat Back Performance Exhaust System.
Cobra Sport performance exhausts enhance the sound, looks and quality of your vehicle giving you the ultimate driving experience.
This BMW M135i performance exhaust is made in 3"/76.2mm pipework and fit from the catalytic converter section backwards (Cat-back) these exhausts replace the centre and rear sections.
This resonated exhaust includes the centre silencer and has a subtle but sporty tone. This exhaust however, is also available as a non-resonated version (excluding the centre silencer) which is a louder option.
This non-resonated exhaust makes the system louder as it excludes the centre silencer and therefore, has a sportier exhaust note. This exhaust however, is also available as a resonated version (including centre silencer) which is a quieter option.
The BMW M135i has an aggressive stance on the road with wide flared wheel arches matched with a smart but subtle body kit. Cobra Sport have managed to improve the styling over the standard M-sport exhaust by finishing off the rear of the M135i with a more aggressive and balanced look by finishing the system with a choice of dual 3.5" (88.9mm) inward rolled baffled or inverted highly polished stainless steel tailpipes.
All relevant fittings and gaskets are supplied.
Tailpipe Options
- TP84 - 3.5" Chrome Inward Rolled Baffled Tailpipe
- TP86 - 3.5" Chrome Inverted Tailpipe
- TP86-BLK - 3.5" Black Ceramic Coated Inverted Tailpipe
- TP110-CF - 3.5" Slash Cut Carbon Fibre Tailpipe

- BMW 1 Series F20 (2011 - 2015)
- M135i & M135ix
- BMW 1 Series F21 (2011 - 2015)
- M135i & M135ix
BM75TP84 (Resonated - TP84)
BM74TP84 (Non-resonated - TP84)
BM75TP86 (Resonated - TP86)
BM74TP86 (Non-resonated - TP86)
BM75TP86-BLK (Resonated - TP86-BLK)
BM74TP86-BLK (Non-resonated - TP86-BLK)
BM75TP110-CF (Resonated - TP110-CF)
BM74TP110-CF (Non-resonated - TP110-CF)
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Cobra
Warranty
Cobra Lifetime Warranty (Non-Transferable)







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