i would stick with the stock pipe if i were u. its made for the trx 3.3 and as long as u have a good tune, the revo should pull wheelies on a dime. if u really want more power, i would change it over to the 33% if u havent already. also, u could change the gear ratio to give it more bottom end punch. just dont change it to where the top end will be gone.


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