Parts & Accessories Spare parts BTM Catback Sierra 19-26 bumper exit with valve. The catback system now has a bend after the muffler instead of exits. The sound is better and for the exhaust tip. It comes with bumper exits if you just want to cut the weld on the bend and install the bumper exits. It also comes with an electronic valve from Al-Hajri Garage, double-gate, so it won't leak at all. The price of the catback new is 4100. The valve with the double gate is approximately 650. The catback comes with a remote. Condition of the catback: guaranteed not to leak. Selling is negotiable. Open to offers.