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Thread: 51mm to 54mm Throttle Bodies Worth It?

  1. #1
    Superbike Twin babutler's Avatar
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    51mm to 54mm Throttle Bodies Worth It?

    What kinds of gains can I expect from making this change? I just want to know if it's worth it and where to get it if it is.

  2. #2
    Baby Twin
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    mate i wanted 54's for ages and finally got some last week, but i'm now trying to move house without selling the bike so i put them ebay today without fitting them. gutted. but there'l be other 54's i keep telling myself! check em out on the bay

  3. #3
    AMA Pit Boss redratbike's Avatar
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    lots more info over on the AF1 forum

    not a lot by themselves but with other mods they come into their own..but why not just fit 57's while you are at it

    what other mods have you got?

  4. #4
    Superbike Twin babutler's Avatar
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    I have a bunch of mods to put on that my wife has been picking up for me while I'm on my business trip. When I get back I'll put on the open carbon fiber airbox that's in the mail from Tash at XPS, I have your collector dual mod getting done right now, and I have a Dr. Rossi Eprom mapped for the modded collector already.

  5. #5
    Baby Twin
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    from what i've read 54's are more suited to the early 4 spark plug motor and 57's for the later 2 plug motor. both are an improvement on standard tho. like red rat says theres loads of info on the other rsv forums

  6. #6
    Superbike Twin babutler's Avatar
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    Is there anything else like the stacks or anything else I will need to change?

  7. #7
    Baby Twin
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    yeh mate you need the right bore stacks, the set i've got for sale come with shorter ally stacks

  8. #8
    One Liter Duc Eater Carbon Kid's Avatar
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    CER 57 TBs worked a treat on my 03, they just slotted straight on, add in all other poss mods and its well worth it
    CK

  9. #9
    Superbike Twin babutler's Avatar
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    I don't think that I'm gonna inside the motor and do any porting, polishing or big bore kits.

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