F Axle diameter question

Discussion in '2-Stroke Machines' started by Algonquin, May 14, 2018.

  1. Algonquin

    Algonquin VRRA and DOCC no.92

    Typically confused I can't find a comprehensive list of front axle diameters for 125 GP bikes to help me identify a set of WP 125GP forks meant for my Honda RS 125 of '98 vintage which, of course has a M15 dia. front spindle while the WP GP forks are M17 dia.axle sized. Maybe TZ 125? The Honda front axles jumped from M15 to M20 after '99 inclusive, I think.
    Obviously confused,
  2. sbrokerboy

    sbrokerboy Well-Known Member

    I would just have a machine shop mic it and make you one, should not be that expesive
  3. SpeedWerks Racing

    SpeedWerks Racing Well-Known Member

    we have a 98 here with WP forks,,,what do you need??
  4. Algonquin

    Algonquin VRRA and DOCC no.92

    I want to know which years and models of 125GP bike used a 17mm front axle and the reason for asking is of course because a front wheel has to have 17mm ID bearings and inside spacers as well. My WP forks arrived unidentified as to application is why I ask.
    Thank you.
  5. knedragon29

    knedragon29 Well-Known Member

    Never heard of a 17 mm setup ..... 15 stock stuff , my WP's take a stock axle and they are single side radial mount, Heard of 20 mm on 125's and had a set of Dymag carbons that came with 20 mm bearings,
  6. Algonquin

    Algonquin VRRA and DOCC no.92

    These WP 125 spec forks could have been Aprillia, I have no info came with them so I remain in the dark, what I will do is use 0.04" shim stock I guess.

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