they have been around a long time. A lot of people do not like to deal with Hoppen (the US distributor for MTM) but you can buy from Anderson Motor Sport. They have been very helpful to me with my setup.
Just checked Anderson... No more MTM stuff on their site!!?? Only O.CT
2000 1.8t Q-tip, sport, comfort convenience, Xenon, MTM Stage 3, 180tt injectors with 3 bar FPR, k04, ATP mani, TT DP, Milltek, modified cat, Swain & Jet-Hot thermal coating, 110 BPV, S4/A6 Strut tower bar, S4 liner, Level 10 VB, Tip chip, SS brake lines, S4 rear brakes, EFU 4u and Boxster fronts.
Exploring / working on: Torsen rear diff conversion