Honda Grom MSX125 Full Titanium Yoshimura RS-9T - Track Tested Weighing in at just above 3 pounds the Yoshimura RS-9T titanium high mount Race Series is just what the doctor ordered for hitting the race track. With its matte carbon fiber and tucked away design, this system is all about performance. Bike is completely stock except for the system. System has no insert (dB killer) in video. 5 inserts are available for tuning the sound and power delivery. Inserts available: SA-15-K SA-14-K INS-RS9A-K INS-RS9B-K INS-RS9C-K RACE SERIES EXHAU