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reducing the drag on the turbos
The standard airbox draws in air from a single entry duct behind the front bumper
Being amongst the first to remap the BMW 135i we've perfected the upgrade to give significant gains throughout the rpm range (see dyno graph below)
RKP’s M4 GTS wing was designed to be a flawless reproduction of BMW’s own F82 M4 GTS wing
Alternative to 776132
TPI 12mm 5x112 Hubcentric Spacers (Pair) Z3M reducing the drag on theThe spacers have CNC machined holes and are hub centric for the highest level of accuracy, laser cut TPi logo and specifications for easy identifications and a special backlash groove design for a perfect fit. TPi spacers are sandblasted, then anodized to ensure a highly durable resistant finish. To give our spacer a final touch, we added a knurl design on the edge to provide a firm grip when installing Includes 10x longer wheel bolts to suit your