High Performance High Quality Rcae Exhaust for Mineralli Engines found on Yamaha Zumas Aprillia SR 50 and many others such as Eton and QJ made scooters.
When using racing cylinder kit from Athena Stage or Arisal best to match up with a race exhaust from Doppler known for its all around performance for bottom end torque plus mid and high range power.
RACE EXHAUST KMX-148537 467146 Exhaust Race Muffler from Doppler France. KMX-148537 POT DOPPLER EXHAUST S3R DOPPLER ADAPT BW'S NEXT S3R BWS NG (VERNI) DOPPLER S3R EXHAUST YAMAHA BW 148537