The new star of the VOCA Racing catalogue! At a first glance the VOCA BigBore 90cc exhausts impresses with a voluminous body and a massive 34mm flange. Equiped with the well known VOCA carbon silencer, the handwelded BigBore 90cc exhaust convinces with a high quality finish. But the main characteristic that has to be emphasized is the outstanding performance! The VOCA BigBore 90cc has an extreme torque that already kicks in at a low RPM level, boosting a 90cc cylinder (taken out of the box) up to 14.000 RPM. This acceleratoin gives you the sensation of a 125cc racebike!