My boot was connected to the knob and I have a non m sport 135. Your 128s will be connected too. Unsnap the boot from the center console first then pull the knob off. It will all come off together then there's a little metal retainer ring attaching the boot to the knob. Remove that and the knob will fall off an ur free o reuse the boot. I left mine connected as I bought an alcantera boot to go with my new knob
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2013 BMW 135i Alpine white/coral red JB4 stage 2/ AFE stage 2 sealed intake box/ VRSF 3.5 inch catless dp/ Dinan exhaust/ Alpine V3 6000k HID angel eyes/ JB speed AW rear lip spoiler/ OEM mud flaps. ER charge pipe/ VRSF 7 inch FMIC forge star CF5s 19x8.5 and 19x9
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