i've never personally used a biturbo.. i've heard both good and bad about it. but my buddy has the proma and he loves it, it performs super good on his bike. i just ordered one today for myself.
i've never personally used a biturbo.. i've heard both good and bad about it. but my buddy has the proma and he loves it, it performs super good on his bike. i just ordered one today for myself.
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