Front end conversion

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Front end conversion

Postby btschudi » Mon May 02, 2022 8:29 am

Hi everybody
The vast amount of information has taken its toll…
R1 Front end…YZF front end… FZR1000 front end…which one to take?
R1 needs a new yoke, YZF doesn’t?? FZR i don’t know…
I’d like to keep the R1 brakes (bluestars) so YZF and late FZR1000 with 6 piston calipers are not an option…
Can somebody give me something like a summary of the different possibilities of USD swaps?
Thanks in advance
Basil
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Re: Front end conversion

Postby Tarwetijger » Mon May 02, 2022 11:00 am

btschudi wrote:Hi everybody
The vast amount of information has taken its toll…
R1 Front end…YZF front end… FZR1000 front end…which one to take?
R1 needs a new yoke, YZF doesn’t?? FZR i don’t know…
I’d like to keep the R1 brakes (bluestars) so YZF and late FZR1000 with 6 piston calipers are not an option…
Can somebody give me something like a summary of the different possibilities of USD swaps?
Thanks in advance
Basil


YZF750 forks are the easiest way. The steering head stem has to be switched with a press.
YZF750 forks need very little work to fit bluespot brakes so you can keep them. You dont want the 6 pistons calipers anyway.
You can even keep the speedo drive.

R1 forks are more work, the stem is not a straight swap, you need something for speedo.

FZR1000 forks I dont know about them. Are close to YZF750 I suppose.
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Re: Front end conversion

Postby btschudi » Mon May 02, 2022 12:53 pm

I mean if the FZR1000 ones for example the 1991 (they switched to the 6 pot calipers later i think from 1993 onwards) are similar concerning the yoke then i should go for those i guess
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Re: Front end conversion

Postby Tarwetijger » Mon May 02, 2022 1:07 pm

If you're not after an UPSD front end and like to use original yokes, you'll better stick to Thundercat / YZF600R forks.
I'm not familiair with them but I believe they are the same dimensions as original forks and are adjustable.
But what do you want to achieve with the front end conversion?
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Re: Front end conversion

Postby btschudi » Tue May 03, 2022 3:09 pm

I am after an USD front end… better stability and better looks is what i‘m after hehehe
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Re: Front end conversion

Postby Tarwetijger » Fri May 06, 2022 9:13 am

If you're going UPSD you'll need the yokes too.
So I stick with the YZF750R advise. :D
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Re: Front end conversion

Postby ChuckeeTRX850 » Thu Jul 21, 2022 6:37 am

G'day T-Rex Fam,
first Q since joining. I picked up a 95 TRX850 a month ago, original 42000kms. very tidy but want to firm her up a bit. My mate has a set of triples and forks from an 08 ZX10R he will sell to me, they have seen about 500kms before he upgraded. Q is - what sort if issues have people dealt with when putting the USD forks and triples onto the TRX? OR, if anyone has the measurements/specs of the headset diameters that'd be great too.

worst case I can always see if they fit and just sell em if not, but any wisdom would be well appreciated.

thanks,
Chuck.
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Re: Front end conversion

Postby jjmoto » Sun Jul 31, 2022 11:27 am

You will need TRX stem, don't know about zx fork diameter but if you use Yzf750, R6 2co, or R1 5vy yokes they have same offset as stock yokes
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Re: Front end conversion

Postby NielsJ » Tue Sep 20, 2022 9:49 pm

At the moment I have a set of YSS cartridge emulators laying in the toolbox, waiting to be installed. I actually discarded the idea last year, but them I needed some other parts, and these fell into the basket #-o

If money really wasn't a factor to consider, I'd put in a set of real adjustable cartridges. Bitubo JBH0, Öhlins NIX22/NIX30, Andreani Misano Evo, Maxton SD20 etc. It'll probably cost you more than the YZF-fork, but it's a straight fit, and you don't have to mess with stems, clip-on's, wheels, axles and all that.

Head set is part number Y472515-553017. Dimensions gives the numbers :-) "Front end conversion" will be your favourite search term. Hours worth of reading! :lol:


Andn congrats on your choise of bike :cheers:
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