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4-Stroke Mufflers

Factory 4.1 MIni System We take fun seriously so we built the Mini Factory 4.1. This is an all out performance exhaust for play bikes. With the Mini Factory 4.1, you will be the king of backyard motocross and look great doing it! Superior power on stock and big bore motors Choose between titanium and stainless steel header Customize with tuning inserts and spark arrestor
Mini PowerCore 4 Moto
Mini PowerCore 4 The Mini Powercore 4 is the best bang for your buck performance bolt on for your mini. Offered as a closed course moto muffler or as a spark arrestor version, the Mini Powercore 4 features a Hi-Flo stainless steel core and formed endcaps, an aircraft grade aluminum canister and a durable stainless steel header. Its pounds lighter than stock and you will swear the motor has been bored and stroked with the first twist of the throttle. Hi Flo core and endcaps Pounds lighter than stock Moto or Spark arrestor version available