BMS 365 Replacement Air Filter For S58 BMW G87 M2, G80 M3,G82 M4, F97 X3M, F98 X4M 340i (F31) The ARM B58 Charge Pipe

The ARM B58 Charge Pipe incorporates Tri-Port 1/8" NPT bungs

By retaining the OEM axle back section the original function of the OEM exhaust valves are still retained

flap always closed

which are quick to install but can never be fully removed with a JB4 the vehicle is never aware it's making more than the factory boost or power levels

and many additional features to be unlocked in the future via free firmware updates

BMS 365 Replacement Air Filter For S58 BMW G87 M2, G80 M3,G82 M4, F97 X3M, F98 X4M 340i (F31) The ARM B58 Charge PipeThis is a replacement upgrade inverted cone performance air filter for our popular BMS S58 front mount intake. Includes an integrated velocity stack for maximum flow and comes pre oiled with blue or red filter oil and a new clamp. Our proprietary high flow filter is designed to last the life of your vehicle and can be cleaned every 15 20k miles using the performance oil cleaning kit below. Made in the USA. Fitment M2 (G87) Alpina B3 (G20) M3 (G80) M4