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    Front End Swap Dimensions

    Does anyone know the upper and lower outer diameters of the steering stem on the CBR1000RR and CBR600RR (2005-2006)?

    And does any one know the length's of the stock Hawk front forks, CBR1000RR's, CBR600RR's (2005-2006) and the RC51's?

    The reason I am asking is because I got a line on a SP2 RC51 front end and a 06 600RR front end and I am deciding on which I should go with. I know the RC51 works with the SP1 triples. I was just wondering if the 600RR would work also or is do'able?

    TIA!
    Jupiter - http://rc31.blogspot.com/

    #2
    i have a cbr1000 lower triple coming soon i will let you know if no one beats me to the answer
    1988 & 1991 hawkgt, 2005 rc51

    Comment


      #3
      the steering stem is the same width. I just bought a 05' 600RR front end and compared it to a F2 stem I had lying around. the diameter seems to look the same it did look a little taller but I'll know for certain maybe later this week. If weather permits..

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        #4
        bit of a dredge, but surely the thread labeled front end swap dimensions should have some, well, dimensions in it!

        Does anyone have all the relevant dimensions lying around? A stem cross section would be awesome! or offsets, fork lengths..... would be helpful for those who can't be assed taking the fork off their daily commuter bike just to measure them and put back together!
        Cylonbros

        Parts: CBR600F4 shock, mikuni fuel pump, givi screen, ZXR250C USD forks (front -15mm), renthal fatbars w full diamond grips, ti exhaust wrap, uni pods, factory 3.0 jetting, mumble V seat, shorai LiFePO4 battery
        Custom Parts: linkage (rear +30mm) and chain roller, pump mount, fork swap fitments and risers, caliper mount wing, frame sliders, ally subframe (-10kg), in-tail exhaust, battery/cdi/reg holder, hugger/chain guard, cowl, tail light, tail tidy

        Comment


          #5
          grinDaily gave me the link below, this should help with the upper diameters and someone posted a Vortex chart awhile back.

          http://www.aztec8.com/id79.html looks like the 600rr upper is 48mm while the RC51 is 50mm.

          The steering stem on the 600rr is same as the hawks. I have it in my mind that RC51 stem is not a direct bolt on, but I could be wrong.


          If you are thinking of using RC51 triples with 600rr forks, you'll also have to consider what axle will fit, spacers and rims.

          hope that helps a bit
          sears

          Comment


            #6
            Actually the top and bottom trees on the 600rr and RC51 have the same fork diameters,but different spacing.The top of 600 forks are 50mm where they fit into the yoke,then taper to 48mm between the top and bottom clamps.54mm on the bottom.You can't marry RC51 forks to a 600 stem because of the axle and caliper mounts.Different rotors/spacers and offsets.The 600 front end is shorter than the Hawks,but works well and is lighter.Depending how you measure the difference is between 1 & 1.5".The forks are shorter ,but the top yoke drops a little.All the stems are 30mm,and interchangable.
            Last edited by behindthetimes; 04-29-2010, 02:51 PM.

            Comment


              #7
              ok, was kind of hoping for the hawk measurements, so we could easily check how well other triples and stems would fit, I'm guessing the OP has already done this project as it was 3 years ago! If I do have to pull my forks out, I'll take all relevant dims and post em up.
              Cylonbros

              Parts: CBR600F4 shock, mikuni fuel pump, givi screen, ZXR250C USD forks (front -15mm), renthal fatbars w full diamond grips, ti exhaust wrap, uni pods, factory 3.0 jetting, mumble V seat, shorai LiFePO4 battery
              Custom Parts: linkage (rear +30mm) and chain roller, pump mount, fork swap fitments and risers, caliper mount wing, frame sliders, ally subframe (-10kg), in-tail exhaust, battery/cdi/reg holder, hugger/chain guard, cowl, tail light, tail tidy

              Comment


                #8
                What do you mean the Hawk measurements?.All the Honda triples will fit,the Hawk forks are 41mm,29.625(754mm)" axle center to top of triple.Yoke spacing isn't an issue,all wheels get the right spacers to fit.Why don't you just measure this shit yourself??You'd learn more that way.OOOOOHHHHH.You don't have a stock front end.Doh.
                Last edited by behindthetimes; 04-29-2010, 06:13 PM.

                Comment


                  #9
                  Originally Posted by behindthetimes View Post
                  What do you mean the Hawk measurements?.All the Honda triples will fit,the Hawk forks are 41mm,29.625(754mm)" axle center to top of triple.Yoke spacing isn't an issue,all wheels get the right spacers to fit.Why don't you just measure this shit yourself??You'd learn more that way.OOOOOHHHHH.You don't have a stock front end.Doh.
                  Originally Posted by bogan View Post
                  can't be assed taking the fork off their daily commuter bike just to measure them and put back together!


                  still have the stock front end, I figured if someone had the measurements handy it would save me pulling it apart to measure, put it back to gether, find some tripples that fit, figure out and make the spacers etc, pull it apart again and install, am looking at some kwaka triples atm
                  Cylonbros

                  Parts: CBR600F4 shock, mikuni fuel pump, givi screen, ZXR250C USD forks (front -15mm), renthal fatbars w full diamond grips, ti exhaust wrap, uni pods, factory 3.0 jetting, mumble V seat, shorai LiFePO4 battery
                  Custom Parts: linkage (rear +30mm) and chain roller, pump mount, fork swap fitments and risers, caliper mount wing, frame sliders, ally subframe (-10kg), in-tail exhaust, battery/cdi/reg holder, hugger/chain guard, cowl, tail light, tail tidy

                  Comment


                    #10
                    I just picked up a 600rr set,gonna use a front wheel off my 919 ,cbr spacers/axle/discs.The only other front ends I know will fit are the Suzuki GSXR family.I think the stems are 30mm and the same length.ANYTHING will fit if you can make the stem.If you can turn a stem,you can take a nice Ducati triple and UNSCREW the stock Duc stem and put in your own.You can put a used Duc front end together for $4-600.Depends which bike and forkset you decide on.Take a look at Gothamcycles.com.Ducati bike breaker.That's where we get the hubs for the rear.Actually,you can buy a stem for a crf450 in aluminum for $50 from Applied Racing.That can be made to work.
                    Last edited by behindthetimes; 04-29-2010, 09:42 PM.

                    Comment


                      #11
                      RydeTheSlyde put CBR600RR USD forks on his hawk and said it's a direct bolt on affair basically iirc. He had a great build thread at customfighters.com
                      1989 Hawk-Track bike in progress
                      1978 SR500-Daily thumper (under 9k miles)
                      1978 XS650-Dad's steed of choice

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                        #12
                        if it fits any modern honda sports bike, except the sp2, any fork clamps will work.
                        1988 & 1991 hawkgt, 2005 rc51

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                          #13
                          I put one in yesterday.

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