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Top » Catalog » Engine » Decats & Exhausts » 135iBackbox » Backbox Silencer Delete BMW F20 F21 M135i
Unleash the sporty sound from your BMW M135i with our rear backbox delete section muffler exhaust made from 304 Stainless steel. Fits BMW M135i F20 F21 Models.

This rear section replaces the factory rear muffler and is a easy to fit item which is fully tig welded and 100% designed and built in the UK!. Our upgrade gives a very nice sporty sound and a nice burble on deceleration, louder than original, but not overly loud. With this upgrade, one can still converse normally when upto speed. Slightly Improves horsepower and torque due to better flow. One-piece design makes installation easier.

Includes required exhaust sleeve joint and exhaust clamps to make installation as easy as possible
Make your BMW M135i sound like it should. This rear section fits all BMW M135i models as shown.


BMW F20 F21 M135i Models


Backbox Silencer Delete Pipe
Exhaust Sleeve Joint
Exhaust Clamps

This product was added to our catalog on Monday 09 December, 2019.