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Old 07-30-2008, 07:37 AM   #1
motomikedh OP
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XR650R Suspension Upgrade Questions

I've been reading a lot of threads that have suspension information here and there. I need a thread that will contain all technical aspects of our glorious suspension as well as projects that have been successful in crossing over other parts to our bikes.

1. If you've finished an upgrade with other bike parts, what years were the parts, and was it worth the swap-out.

or

2. What have you done to your current suspension to make it outstanding, and have other people ridden your bike to prove it. (Or is it in your head)
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Old 07-30-2008, 07:44 AM   #2
RdrMtn
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It would also be important to note the terrain people are riding. I would like to know how to make my suspension super soft for 1st gear trails with big rocks. That setup would be a lot different than fast desert terrain.

I put in stiffer springs for my 185 pound weight (maybe too stiff), 5-weight oil, proper sag, and compression clickers fully soft and I still wish it was more plush.
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Old 07-30-2008, 08:27 AM   #3
Zerodog
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If you want it more plush for the fork it is easy. Drop your oil level. What is stock 120mm? Go to 140mm or 150mm. It will be marshmellows. Beyond that you need to revalve it. The shock would need to be tweaked. But Mr. MotoMike's bike feels incredibly soft stock. Opening up the compression clicker and speeding up the rebound should get it close to what you want.

I can't wait to see what Motomike comes up with for his new project bike. I think it will be a bad ass adventure DS machine when it is done.
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Old 07-30-2008, 09:02 AM   #4
RdrMtn
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Thanks, I'll try that. I know I put at least the stock amount of oil in or more. I think I may have over sprung the rear with the 11.0kg.
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Old 07-30-2008, 09:14 AM   #5
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Could be. What is your sag?

More oil will make the fork more firm and possibly never bottom. If you never bottom the fork you are missing out on (X) amount of travel.
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Old 07-30-2008, 09:19 AM   #6
RdrMtn
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My sag is about 4", but that's just me measuring it by myself, which is kind of difficult and probably not real precise, but it's close. Would more sag than that soften it, or will it just ride lower in the stroke and not change much?
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Old 07-30-2008, 10:10 AM   #7
Zerodog
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Get a buddy to measure for you. It is imposible to do by yourself correctly. 5mm can make a big difference in handling.

OK lets get this thread back on TOPIC!!!!!!!!!!

What are your XR650R boinger mods??????????????????????
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Old 07-30-2008, 10:21 AM   #8
sp0911
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Suspension mods ...

I follwed the BRP layout for fork valving, and if you check my posts should still be out there showing the shim layout. I am currently running 5wt for break in but, will be switching to 0wt shock fluid.

Rear went the same way (BRP) but, I used a gold valve instead of stock.

I am sprung waaay heavy (.47/11.0) for extra weight (i.e gas tank, rack, headlight, luggage and backpack) and on the fast fire roads it works great!

On the slab she is a bit taunt unless, loaded down.
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Old 07-30-2008, 10:38 AM   #9
DualSport650
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Over at ThumperTalk.com's XR650R forum, Bruce Borynack
is a great resource for XRR mods. I took his advice and did
his "Baja 500" fork and rear shock valving and installed
heavier springs for my 200 lbs.

I like it!!!

http://www.borynack.com/XR650R/ (see the fork and shock pages)

The new suspension rocks!

It's nice and smooth over the smaller rocks and bumps,
and will also take HUGE G-OUT HITS at high-speed with style.

If you want the EXACT settings, send me a PM and I'll hook you up.
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Old 07-30-2008, 09:03 PM   #10
motomikedh OP
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Thanks for that website DualSport650.

I guess I should be direct and ask everyone what type of shock will fit on the back that has high and low speed compression dampening. I've read about some CR500 shocks that will fit. What years and what other models of rear shocks will fit on the XR650 !!
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Old 07-30-2008, 09:59 PM   #11
gaspipe
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It's sort of a hybrid CR500/XR shock that you'd be looking for. You'll get some perks there. If you have the coin and inclination to go that far, you may as well swap in a set of CRF450 USD forks and gain an inch of travel up front too.

I've ridden a lot of XR650R's modded by loads of suspension places. My favorite is still Barnums.

I run Rob Barnum's version of the valving stacks and oil height in the forks, and a Barnum modified rear shock. It's worked for me in a very wide variety of terrains with just a few clicks one way or the other. No MX tracks, triples or desert racing, just zillions of miles of cross country dirt/desert riding on the XR650R.
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