This stainless steel rear exhaust section replaces the heavy (and restrictive) stock rear muffler on the 135i. Shed excess weight and restriction, and get a better sounding and more freely flowing exhaust by bolting this beautifully made Borla piece in place. You will love the rich, deep sound this rear muffler gives your 135i. And if you have tuned your 135i to make more boost than stock, you will greatly appreciate the added power and reduced weight.

This exhaust flows much more freely with less restriction than the stock rear muffler section, and offers a great "moderately aggressive" sound, complete with Borla's signature deep sound. Built to last, Borla makes all of it's exhausts with 100% T-304 aircraft-quality stainless steel, which maintains true form and functions at all points for superior corrosion protection. This is all backed by Borla's One Million Mile Warranty. Made in the USA.

This Borla Stainless Rear Exhaust fits the following BMWs:
2008+ E82 1 Series 135i coupe (turbo)
2008+ E88 1 Series 135i convertible (turbo)