my bike came with one. sounds a little louder but not much on the performance end. maybe a hp or two at most. sounds good and works well though so id say its a good buy. reusable too re-charge kits are like 10 bucks.
i love the k&n flows alittle better than stock and reusable so thats a +1, they do recomend the bmc race for the track but i no people who ride on the streets but have to clean them more often, just keep a eye on it if u decide to get one
My bike came with the BMC filter. It is also on the Power Commander map. It is a race bike. The former owner could not have been more positive about it. BMC have been in Formula 1 and that is the campaign that gets me. I would gladly pay the extra for the BMC for the race track.
I put the BMC street on as the Race is a bit fine and needs more maintenance, with respect to cleaning.
haven't had it out only 2x's as their is snow up here now but I did Full hindle race exhaust system, and the rear wheel spun up too easy, but roads are kinda slick and my rear is worn out. Oh I also added the KIT ECU so that i'm sure was a huge improvement.
but ya I thnk its worth the extra $20, I noticed a different sound and increase in power with both installed.
quicker responce, felt quicker is the seat, but it's a combination of all 3 upgrades i'm sure, going from stock.
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