| Author | Message | ||
     Koz5150 |
I came across a 2008 XB12r that was run into a ditch. It appears the only serious damage is that the front forks are tweaked a bit. I was wondering if all XB models share the same forks dating back to 2003 or if I need to look for specific ones for that bike. I am a tuber guy so I am a bit unfamiliar with the XB specifics. Thanks | ||
| Froggy |
Any forks from a 05 and up Firebolt (both 9&12), 05 and up XB9S, XB12S, XB9SX, XB12SX and finally the 06-08 XB12SS. All those bikes listed used the same forks, only difference is the older bikes have different adjusters, and on the 09+ bikes the forks are black instead of silver. Do not use forks from a Lightning Low/SCG, STT, 09+ SS, or a Ulysses, unless you want to look like some kind of chopper with the front end being a at wierd hight  If possible, get the part numbers off the bottom of the fork legs before buying and post up, I can tell you what they came off of. (Message edited by froggy on August 02, 2012) | ||
| Koz5150 |
Thanks a ton! | ||
| Speedfreaks101 |
There is also a change between 2008 and 2009. You can view the differences in the svc manual. | ||
| Greg_e |
How badly damaged? I thought you could buy the slider which is usually the damaged part and might let you save them. | ||
| Koz5150 |
I will look into it. for the price it might be easier to just buy a set of forks rather than go through the trouble of rebuilding the current ones. | ||
| Deanh8 |
1125 forks also bolt right up and are a nice upgrade if you find a front end with trees cheap enough | ||
| Dcmortalcoil |
I have 1125 forks in my 2009 XB12Ss using stock trees. The outer diameters of the forks are identical. So why would you need to change the trees? | ||
| Speedfreaks101 |
The only XB that have the same size forks (47mm) as the 1125's is the XB12X. The 2003 X's & the lowered models use 41mm. All others are 43mm | ||
| Hogs |
Also xb12`s till 2005, or was it 2006 used the smaller tubes, I think it was just till 2005... | ||
| Al_lighton |
The fork slider tubes are different diameter (47mm vs 43mm), but the OD of the outer tubes are the same 56mm in the clamp zone. HOWEVER, there is a different Center to center difference between the 43mm Firebolt forks and the 47mm 1125 forks. They're different by enough that it'll fit if you mount them, but they will not work properly because they are being splayed a little. There will be increased drag and wear on the bushings, with more friction. I've got the nominal dimensions at work, can't recall the exact difference now, but I think it's around .050" different. If you switch to 1125 forks, you also need to switch the trees. Al | ||
| Al_lighton |
The 03-04 XB fork sliders are all 41mm, 05 and later are all 43mm, EXCEPT for SL and Scg models, which are still 41mm, and 08+ Uly sliders, which are 47mm. The 41mm sliders have 54mm outer tubes in the clamp zone. The 43mm sliders have 56mm in the clamp zone. Al | ||
| M1combat |
So if one were to buy a set of 1125 forks and trees they'd bolt to an '04 12R? | ||
| Hogs |
As M1ombalt asks...IF thats so what if any Advantage would that have putting 1125 front end on a 04 xb12R ??? Wouldn`t that just be over kill, maybe somewhat better for the track all out racing but for street use even one who thinks the street is the track still over kill????? | ||
| M1combat |
"maybe somewhat better for the track all out racing but for street use even one who thinks the street is the track still over kill?????" The whole bike is overkill in that respect Hogs . | ||
| Al_lighton |
I found the dimensions at work. The fork Center to Center distance on an XB is 7.678", on an 1125 it is 7.757", for a difference of .079". It's close enough that you'd be able to assemble it, but far enough off that it is going to affect things in the long term. FYI, the steering stem to Fork CL offset is identical on both, 1.063". The steering stem nut is the same on both, so I'm guessing the steering stem diameters are the same. But the Steering head bearings are NOT the same part number, so I'm not sure how that affects bolting 1125 trees on an XB. Push come to shove, I'd bet you could press the stem out of the XB lower tree and put it into an 1125 lower tree if necessary. The front wheel and axle are the same. Al | ||
| M1combat |
So essentially we "should" be able to bolt an 1125 front end (including triples) to an XB as long as the bearings aren't a no-go. I'm assuming that since we can upgrade from ZTL to ZTL2 then I should be able to bolt my old ZTL system to the 1125 forks... Anyone have a set of XB and 1125 steering head bearings they could measure up and maybe post pics of? I'm sure I could just call EBR and ask all the questions but I would absolutely hate to cost them any forward progress at all. I need a new right fork tube on the XB and I'm thinking I may as well just move to the 1125 setup. (Message edited by M1Combat on August 08, 2012) | ||
| Speedfreaks101 |
Al, Thank you for your input, it is greatly appreciated. | ||
| Farmer32 |
Would that also work for a 05 xb9r | ||
| Greg_e |
Could a person machine 0.039 off of each inside of the fork lowers to make the 1125 forks work with an XB triple? That small an amount shouldn't mater to the fender or tire or wheel, but it might require a slightly shorter axle (been a while since I pulled the front wheel off so my memory is a little lacking). Then if the forks needed to go back to an 1125 triple the user could cut simple shims from aluminum or brass stock to get back to the correct width. Some 1/32 inch shim with a little epoxy would work out to almost exactly the needed shim to put it back together. | ||
| Deanh8 |
Center bore is way off on the XB trees, Ive talked to EBR at lengths on this. If you slide them into XB trees they will work but you are binding the forks which could cause serious problems if pushed.     | ||
| Deanh8 |
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| Greg_e |
The 1125 forks also appear to be much shorter, is this correct? | ||
| Deanh8 |
I did lose 1/2 inch in the front but I raised the 1125 Forks to the top of the trees, they are usually down a little bit on the 1125. My forks have been setup for a track bike by traxxion with AK20's so no idea if that had anything to do with the height difference. | ||
| Drixton |
"Center bore is way off on the XB trees, Ive talked to EBR at lengths on this. If you slide them into XB trees they will work but you are binding the forks which could cause serious problems if pushed. " -Deanh8 I am getting confused on whether by "slide them into XB tree" you mean just the 1125 fork tubes only into the complete XB upper and lower, or the 1125 fork tubes w/ the 1125 lower into the XB upper. I don't understand why there would be a problem with sliding the 1125 forks only into complete XB trees. Where would they be getting splayed? The only scenario I can see a problem with considering what I've read in this thread is since the fork center to center of XB and 1125 trees are slightly different, you can't mix 1125 and XB uppers and lowers; you would have to use complete triple trees from either model. Thank you in advance. | ||
| Greg_e |
The 1125 uses the same front wheel, so since the triples are differently spaced, then the lower leg where the axle mounts must also be a different spacing. You might be able to remove the lower part from the XB and attach it to the 1125, or as I said just machine a small amount off the lower leg to use XB triples. | ||
| Drixton |
"The 1125 uses the same front wheel, so since the triples are differently spaced, then the lower leg where the axle mounts must also be a different spacing. You might be able to remove the lower part from the XB and attach it to the 1125, or as I said just machine a small amount off the lower leg to use XB triples." - Greg_e OK, so how about this part combination: Wheel: XB or 1125 Axle: 1125 Fork legs: 1125 Upper triple: XB Lower triple: XB According to this thread, this setup will have a fork center to center that is 2mm less than the 1125 parts are expecting. So, what if before you slide the axle on you slide a 2mm shim onto it, then slide the axle and shim into the forks. Barring the differing from theory and reality, wouldn't think work and align? | ||
| Deanh8 |
You can get a complete 1125 front end trees and everything for less then 2-300 bucks on ebay.. why mickey mouse it? | ||
| M1combat |
If you hunt around... I have found a few sets for $300 that a cosmetically damaged. $450 for good sets. Both forks, trees, stem... Just picked up a set . I've seen a couple go for 350... but they've had higher shipping charges so total was around $400. | ||
| Drixton |
I have an S1W and I'd plan on getting a pair of the Crossroads S1 bars. If I convert over to XB wheels, I'd still like to use the same type of bar. That being said, I could plan on getting the Crossroads XB bars (almost the same as the S1 bars), still with 1125 forks. In other words, I'd like to figure out if there is a workable combination of parts that would allow me to use Crossroads S1 style bars (or the XB version of them), 1125 forks, and whatever triples I have to use to make it work. The 1125 triples don't have the same fork clamp bolt pattern as the XB, so I can't use the style of bars I'm looking for with them. |
