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Lowering Fe400

Joined Oct 2007
110 Posts | 0+
Swansea , WALES
Hi
is it possible to lower the seat height of an 03 400 if so how do you go about it? it's just that i'm a little short in the leg shall we say. :?
 
two easy things are to cut down the seat and to raise the forks thru the clamps.

downsides are ur cutting up ur seat foam and raising the forks will only get u a small reduction whilst increasing ur head angle which u may not like.

with regards to the shock i do know of ktms that have been lowered but this requires internal mods to the shock and it would prob be the same for the berg.

where do u live?
 
so how were those KTM's after they were lowered, i know it costs about £350 to have the work done with a revalve for your weight, but i don't know what it involves i'm waiting for someone from Dr shox to phone me back.
what part of Wales you from ? i'm in Swansea
 
yes, well I suggest that you consider how desperate you are to lower. first take the foam off and cut from the bottom a shape out of the middle, not the top but from the lower part. Put a softer foam in and then recover. the seat will retain the same shape, but will sink as not so firm. then move the upper shock bolt up if you need more and balance with fork sliding up. Lot of work and a mess to fix that shock if you don't like it. To play it safe do the seat thing, once you work out what I am talking about, and then put spacers in the shock and fork. It is easy as you put it on the shock shaft when service it. use geometry to work out how far you want it to drop and how long the spacer needs to be. ie 5mm spacer will drop you probably 30mm, don't go beyond that, then drop the forks by working out the spacer to the dampening rod there. For example 25mm spacer may be enought to drop higth 30mm straight down.

have you got it

I suggest you get boots that have booties that allow a bigger size boot for your foot and you can tip toe a bit better. you may not like the suspesion change, try the boots and seat and play as much as you can with the sag withoug surgery on shocks and forks.

good luck
 
I'm not to bad a home mechanic but i've never tried altering suspension appart from settings and have absolutely no idea what you just explained to me. appart from the seat and the boots bit :?
 
fe600. you cant just add spacers to the pds shock as they have internal valving and needle which do the job that a linkage would be doing on a non-pds equiped bike. just shortening the shock with spacers will screw up the valving. hence why not every suspension shop will shorten pds shocks.

though i have be told that once you know how to its straight forward.
 
hi, the spacer goes on the shaft, on the other side of the seal block or whaterve the call it. You need to make it from a hard plastic rod and have an engineer drill it. Dont use aluminium or metal. all it does is stop the rod extending by that 3-5 mm so the dampening action is not changed much. It is the same as have the sag set slack, and the shaft down in the shock a few mm, but that translates into 25-30mm less in seat hieght. don't go more than 5mm, that goes to about 30mm on the back wheel as the swinging arm angle to the ground and handling is no good and you may not be able to absorb the preload and set sag correctly. Witht he front forks hopefully you will not need any preload as the spacer in the forks and you only need to do it in one will take up the gap. check how much you can play with here at the front before working on the back. You don't want to cut things and mess around as you want ot be able to reverse it for yourself and for selling. last time i did it i had right side up forks that had long plastic spacers that allowed me to take 30mm cut of it.....you cant do that with all forks. with the shock I have also experimented with moving the shock top mount up but that is a lot of trouble and cannot be reversed easily.

My current view is to go for the seat first. thake the foam out and cut a shape like a loaf of bread out of the base so the sides are left iintaked. replace with good quality foam, but softer. you will then maintain the shape for sliding up on the tank but when you want to put your feet down the softness will give you a couple of centeremeters.

I don't like the shock altering unless desparate. It is easy to do *********** is easy to work on. you can buy the refill bottle and get it gassed by someone or fill through the submerge method and then get someone to gas it. Just remember to triple check the circlip is in place as those filling it will get nervious if you do not assure them you have done that.

Do the seat, get boots that take booties allowing one size bigger, do sag to 100 to 110 mm on shock and slip the forks down as far as you can and set 35mm sag on front forks. put a small spacer under handlebar mounts, no more than 3mm and slide the forks up to help turning and you may need to preload forks to 25mm for handliing. Leave it at that!! ie only do the shock and fork spacers if really short. A little bit here and a little bit there and of course lowing the seat like shown in this site elsewhere, but try not to go past what I have said above. have fun, keep the bike handling well and have a style that does not require putting you feet down. sorry about the long winded babble
 
It's o.k the reply was good, and if i was riding fast open trails i would leave the bike alone
 
I have altered my fc 470 i used a spacer in the shock ,i removed one of the compresion shims on the secondary piston and have gone to a straight wait spring .The adjusters are now wound nearly all the way in but bike is good for tight trails,roots logs etc .The forks were lowered by puting brass spacers on the cartridge rod i only changed the oil volume the bike has been like this for 2 years does every thing well even jumps but not that great on big sandy woops.Its still rideable but definatley not top gear stuff . Spring preload is high but i like the suspension softer so have .42 when for my wait they should be .44 so the extra preoad is ok.
 

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