BMW "BACK BOX MOD"

"Back Box Mods" consist of carefully modifying the inside of the rear silencer so that it performs more effectively, therefore giving a deeper much sportier tone.

This is a modification that gives M Performance Back Box,

characteristics and performance enhancements.

Prices Below For Our M135i/40i/M240i/M335i/340i etc. Services;

BACK BOX MOD ONLY

£200

SINGLE RES AND BACK BOX MOD (PRE APRIL 2018)

£250

(£10 deposit £240 on the day)

DOUBLE RES AND BACK BOX MOD (PRE APRIL 2018)

£300

(£10 deposit £290 on the day)

SINGLE RES AND BACK BOX MOD (POST APRIL 2018)

£300

(£10 deposit £290 on the day)

DOUBLE RES AND BACK BOX MOD (POST APRIL 2018)

£350

(£10 deposit £340 on the day)

BMW's PPF WILL CAUSE ENGINE LIGHT - THIS WILL NEED MAPPING OUT 

PLEASE MAKE SURE YOU HAVE HAVE THIS ARRANGED BEFORE OR AFTER

-

PLEASE ADD WHICH VEHICLE AND WHICH MODIFICATION

YOU REQUIRE IN THE NOTES SECTION IN THE BASKET PLEASE

This Is A Deposit Listing