Easiest Front End

[the civil one]

I know the Easiest Front end to fit on a R100GS , is , An R100GS .

But what else fits , Handy [ISH ]
Whats on yer motor.

Just got a Pallet , no front or rear end.
Spose this could turn into a What have you thread

 

[Rob Farmer]

Suzuki DRZ400 front end will fit and be affordable. Apparently there is a standard bearing to allow the two to fit but you need a spacer because the suzuki stem is longer.

 

[the civil one]

Brilliant Rob , Now will you sell me a complete one ?
Will Wheels & Calipers , All plug in .
Can the Stem be Cut and threaded ?

 

[litelfun]

front end

I will be splitting my front end on my 1992 r100gs when I find a buyer its the last vershion of forks they done with wp springs fitted in,
I allso have the front wheel in super condition with a new pirreli mt 90 front tyre everry thing thier if you need a front end !
I allso have a set of WP yockes for 58er forks that will fit strieght in using the standard gs headset bearings its all ready been reduced 1mm
and shorten 20mm its exes I bought one moor just for spare you just need to find a set of forks and wheel then which arnt hard to find on ebay

 

[peepingtom]

I've got forks and wheel off of an xr650r (the water cooled one) on mine. there was a fair bit of stem swapping apparently but there in. centre stand is only just useable and the side stand......forget it. much better off road though

 

[Box’a’bits]

Fork swap

I put 48mm USD Kayaba's off an '05 YZ250F forks on mine. Here the thread on that. A wee bit of machine work on the stem, & a spacer in the cartridge to reduce travel. I have 250mm travel now, 25mm up on stock.

The major issues you will need to look at are:

• The offset on the triples. Too little & you'll foul the tank & your turning circle will be shite. Stock 38mm. On my YZ250F the offset is 25-26mm. On a lot of the KTMs 20mm;
• The geometry of the forks, ie leading axles etc;
• How easy it is to reduce the fork length back to the stock 225mm travel. Its hard to get the height to match long travel forks given the limitation of the paralever;
• Its easier to use the front wheel from the donor bike. The cross spoke wheel weighs a ton. But do you want tubeless? If so you will need to do a bit of machine work;
• Brakes. From the donor bike? The disc may be okay for a MX bike, but not for the behemoth that is a GS. I went with a 320mm super moto disc & the stock master cylinder. I probably need to either sleeve the master cylinder size down to 12 mm from 13mm, or adapt a better caliper;
• Cost;
• Technology age. You do want to be able to source parts don't you?

Have a look in the ADVrider Airhead forum at the various Unholy Union threads.

 

[cheb]

I've XR650R forks on mine. From memory the bottom bearing is the same and there's a top hat washer to sort out the upper bearing. It needed a spacer as the stem from the XR is about 25mm too long and the bearing has a different internal diameter. Fork travel was restricted by fitting preload spacers inside the forks, 75mm IIRC. I wanted matching wheels so kept the crosspoke front, more top hat spacers needed. The brake is a 320mm disc from an unknown bike, possibly a Suzuki, mounted on a bespoke aluminium carrier. Apart from the offset being 25mm not 38mm (again IIRC) I know nothing of the geometry . It handles OK so no worries there.

I picked XR forks as they were cheap and plentiful on Ebay at the time and I prefer the look of RWU forks

Added: I could muck about changing the stem but then I'd need higher bars or bar spacers so lots of work for no real gain.