Fabspeed Supersport X-Pipe Valvetronic Exhaust System - BMW M3/M4 (G80/G82)Get that aggressive and sharp BMW sound without any check engine lights or in cabin drone. The Supersport X Pipe Valvetronic exhaust system includes Fabspeed's high performance Valvetronic axle back section and our "Double X" mid pipe that deletes the secondary catalytic converters, for the perfect combination of sound, power, and weight reduction. SOUND: This system transforms the M3 M4 into a proper sounding monster. Youll actually hear some turbo

L-channel = better design than U-channel

To address this issue

It evokes emotion

DFE (double fine electrode) maximizes ignitability

Racing pedals for the Mercedes C-Class 01-07 W203 chassis

The thickness and composition of this Nitride layer are independently verified in a materials testing lab for each production batch

Designed to be a Good

These valves are +3MM oversize for maximum flow (machine work required)

5" double-walled slash-cut tips in either diamond black or chrome silver

light trucks and SUVs

Our single piece CNC mandrel bent aluminum intake pipes allow for smooth entry of cold air into the engine providing peak power gains ranging from 9-12HP

Introducing the Velt Sport Secondary Air Injection Block Off Plate