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Help FZR 250 2KR Spoke Wheels

Discussion in 'Yamaha 250cc In-Line 4's' started by jhedzzz, Nov 21, 2023.

  1. jhedzzz

    jhedzzz Member Premium Member

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    Hi. I just got myself a 2KR and I'm looking to install inverted forks w/ dual discs sporting spoke wheels/rimsets. Anybody else tried doing the same? I'm looking for compatible rimsets from other bikes that I can use. Was hoping somebody can pitch in any leads. Thanks!
     
    jhedzzz, Nov 21, 2023
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  2. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    maelstrom, Nov 22, 2023
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  3. jhedzzz

    jhedzzz Member Premium Member

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    Thanks! I actually already have a mixed set here.
    Forks from an old Ducati 999 and tpost/butterfly from a duke390.
    Needs a little bit of conversion but nothing too backbreaking.
    [​IMG]

    What I'm currently researching on are the rimsets/spokewheels that I can pair it with, specially on the rear.
    But I'm guessing that wouldn't be as easy as I thought it would.
     
    jhedzzz, Nov 22, 2023
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  4. mboddy

    mboddy Well-Known Member Premium Member Contributing Member

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    Rear is easy. 3.5" from the later model FZR250 3LN goes in without any modifications.
     
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    mboddy, Nov 23, 2023
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  5. ruckusman

    ruckusman White Mans Magic Master Premium Member Dirty Wheel Club

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    As @maelstrom has pointed out - the triple clamp offset is important

    Would love to know what the fork spacing and triple clamp offset is for your RC390 triples.

    FWIW the Hyosung GTR250 and GTR650 triple clamps are 40mm offset, which may be the same as the 2KR - it is the same as the 3LN
     
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    ruckusman, Nov 23, 2023
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  6. jhedzzz

    jhedzzz Member Premium Member

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    Thanks for this. However, I was looking to use a 4.25" rimset to pair with my 140/70-17s. I just need a proper hub that requires minimal modifications. If all else fails, I guess I'll just have to chop off my rear mags to get the hub and work with it.


    Yeah. I'm not really much into these figures but I do have a trusty shop here that deals with all kinds of modifications and they're pretty confident that they'll be able to fit the forks I have to my 2kr. I'll be sure to share my build once it's done.
     
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    jhedzzz, Nov 23, 2023
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  7. Andych

    Andych Moderator Staff Member Premium Member Contributing Member Dirty Wheel Club

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    You can potentially fit almost anything to any bike... the question is will it harm the handling and safety of the bike.
    Front end geometry plays a big part in the overall stability and handling of a bike, especially one like an FZR250.
    That is why @maelstrom has a lot of info on his website (linked earlier) to provide a source of info so that would be modifiers can establish what will and wont work... no point in having a sluggish front end that would suit a Harley on an FZR 250 or the opposite...
     
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    Andych, Nov 23, 2023
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  8. jhedzzz

    jhedzzz Member Premium Member

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    I'll make sure to keep that in mind. Thanks!
     
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    jhedzzz, Nov 23, 2023
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  9. ruckusman

    ruckusman White Mans Magic Master Premium Member Dirty Wheel Club

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    My Bike:
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    A 140 rear will go onto a 3.5" rim, I have that tyre on my 3.5" wide 3LN rear wheel.
    I'm unsure if the 140 rear tyre will fit into the 2KR swingarm - something to check.
     
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    ruckusman, Nov 24, 2023
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  10. jhedzzz

    jhedzzz Member Premium Member

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    140 fits just barely with like 2-3cm clearance on both sides. I'm currently using em and it works just fine. It's just that the stock rims are for 120s and they make 140 tires look thin, thus the plan to use a 4.25" rimset. I'm also looking to upsize up to at least 150s and currently working to close a deal to acquire a fzr400 swingarm, which should "fit right in" based on conversations I had with other local fzr250 owners.

    Also, just to let you guys know, in the PH, best you can go on the road is 100kph before getting caught up in traffic. And 250s are basically not allowed on highways/expressways so I'll be just running on 70kph tops most of the time on national roads here.

    These upgrades I'm wanting to do is really more for aesthetics rather than performance so... yeah.
     
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    jhedzzz, Nov 24, 2023
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