★Get updating your MA chassis, and aim for the top of the race rankings with this tune-up parts set! ★The set includes front/rear FRP plates, 13mm low-friction rollers, four adjustable mass dampers, stabilizer ball heads and small parts for use in attachment. ★The front FRP plate is compatible with 9, 11, 13 and 19mm rollers, and the rear plate with 9, 11, 13, 17 and 19mm.