ARROW THUNDER exhaust for APRILIA RS4 125cc 4-stroke from 2017 catalyzed or not at choice

Here is the ARROW RACING exhaust for 125cc APRILIA RS4 4-stroke 125cc motorcycles from 2017.

Available in non-catalyzed (not approved on public road) or catalyzed (approved on public road). It will allow you a very good power gain and especially more torque.

The bench test was done without having to touch up the injection and ignition therefore a more powerful gain can be achieved thanks to a remap.

Its body is in fine rolled jail welded, this exhaust will offer an excellent resonance and a melodious noise.Couple, light body, noise ... its design and finish are excellent!

Delivered complete, this pot is aesthetically very racing! This pot is delivered with certificates, however if a modification is made to obtain more performances, the homologation is no longer valid.