Yeah you can by a full sytme , header and muffler or you can buy aq lsip on or slip ons. Just depends on what you are riding. Like on my Harley i replaced my whole system and it being fuel injected i had to buy a super tuner to adjust my fuel air ratio to prevent it from running lean. If i had just bought 2 slip ons i would not have had to buy the fuel injection tuner but i would have had the black short shots eather. Kinda off topic but just my incite.