I forgot to mention I have a 17.5 & it's a good compromise. It gives you a little better bottom end because it has higher velocity & still offers more on top. I'd opt for a Motomatic or MLM pipe instead of a factory pipe. Hand made is worth the extra money. Just read all the rave reviews. Got more power everywhere. I've got both & they're unbeatable.
Re: Dellorto PHBG 17.5mm + Proma GP = ?
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