When the 2021 GASGAS motocross bikes were introduced, one of the very few things that was different from the KTM/Husqvarna models was the stock exhaust system. Riding the GG MC 250F, the power felt almost identical, power curve-wise, but just slightly down overall. We wanted to see if the new Yoshimura RS-12 Full Exhaust Stainless/Aluminum system could sprinkle some pepper back on the GASGAS’ performance. Watch to find out how it worked.