DeutschTuning proudly offers VRSF Upgraded Cold Side J Pipe Charge Pipe 15 – 19 BMW M3, M4 & M2 Competition. The VRSF aluminum J pipe upgrade for your M3/M4 replaces the weak plastic chargepipe that is prone to failing at and above OEM boost levels. Our aluminum chargepipe features precision CNC billet aluminum flanges and they are finished in powder coated wrinkle black. Two plugged 1/8″ NPT bungs are included for those who are currently using water injection or interested in using water injection in the future. This kit comes with everything required to replace your OEM plastic J pipe including the retaining clip. Install guide available here.