Milltek BMW N55 F20 F21 M135i Rear Silencer Exhaust
Upgrade your BMW M135i exhaust with the Milltek Sport rear silencer for the BMW 1 Series F20 F21 N55. This premium stainless steel back box is the ideal M135i rear silencer and axle-back upgrade for anyone searching for a deeper, sportier BMW M135i exhaust note with improved response and performance. Built in the UK by Milltek Sport with over 20 years of exhaust development, this M135i exhaust rear section delivers quality, fitment and durability you can trust.
If you are looking for a BMW M135i rear silencer, M135i back box, M135i muffler, M135i axle-back or a Milltek M135i exhaust upgrade for the F20 F21 1 Series, this is the perfect solution. Road options are EC approved for peace of mind.
Why choose Milltek for your BMW M135i N55
- High quality type 304 aircraft grade stainless steel throughout
- Mandrel-bent pipework for optimal gas flow
- Increased bore for performance without losing mid-range torque
- Precision manufacture to ISO 9001 standards
- Designed and manufactured in the UK
- Substantial weight saving over OEM systems
- Sharper throttle response and improved driveability
- Low pressure system design for maximum performance
- Twin 90 mm GT90 tailpipe options to suit your style
- Pipe diameter: 3.00 inch (76.20 mm)
What is included
This listing is for the rear silencer section only. It does not include the front or mid pipe. We also offer the complete Milltek M135i cat-back exhaust system for the BMW F20 F21 N55 if you want a full system upgrade.
Fitment and compatibility
BMW 1 Series M135i 3 Door and 5 Door (F20 and F21) 2012 onward with the N55 engine.
Tailpipe styles and part numbers
Road, EC approved options:
- SSXBM957 - Polished GT90 tips
- SSXBM958 - Cerakote Black GT90 tips
- SSXBM1025 - Titanium GT90 tips
Race options:
- SSXBM959 - Polished GT90 tips
- SSXBM960 - Cerakote Black GT90 tips
- SSXBM1026 - Titanium GT90 tips
Real-world results from Nforcd
We have installed this Milltek M135i rear silencer on customer cars and our own vehicles. Fitment is spot on, the quality is superb and feedback has been consistently positive. Customers love the enhanced character and the premium finish of the GT90 tips.
Fitting and support
Professional installation available at Nforcd in Warwickshire. To request a fitting quote or advice, email Sales@nforcd.com.
Warranty
Supplied with Milltek’s two year warranty.
Notes
- Images are for illustration. This listing is for the rear silencer only.
- Road options are EC approved.
SEO friendly search terms
BMW M135i exhaust, BMW M135i rear silencer, M135i back box, M135i axle-back, M135i muffler, Milltek M135i exhaust F20 F21, BMW 1 Series exhaust upgrade, N55 exhaust, Milltek Sport rear silencer, GT90 tips, stainless steel exhaust, BMW M135i cat back, F20 M135i exhaust, F21 M135i exhaust, EC approved exhaust, UK made performance exhaust.
