Add Eibach springs

12 replies to this topic
  • heavyhitter

Posted September 16, 2007 - 12:16 PM


Listen up you fat asses!
Need to lose some pounds? Pfft, eat that burger any just get springs for your bike.

I added Eibach .47 springs with 3 washers and cut 3.5 inches of preload tube. The washers and tube come with the springs.The stock springs where @ 22.5inches and the Eibachs where 20 inches. So I added close to a little over 1 inch extra preload to the springs.

The rear spring is also shorter. I removed the rear spring (PITA! I did it from under the seat and removed the air box not a fun task getting the bottom bolt out and the top bolt to the frame wouldnt turn, I had to drill out and replace it) The new spring I added some preload, about 1/2 of what was availible, and put it back on. Whats awesome is when I sat on the bike, I had exactly 4 inches of race sag! NICE!

When I sat on the bike it felt too stiff. Then the test ride came, I was sceptical at first, but as the road miles added up it seemed better and better every foot I rode. Then I took it off road...... One word ......WOW. Huge I mean HUGE difference, it is a different bike. Because of the harder spring rates there is more headshake and it isnt as plush on the little stuff, but I know once I get it dialed in, it will only get better. Unless you are in the weight range of the stock spring rates or if you are a faster aggresive rider, $220 will transfrom the bike for you this upgrade is a MUST!

p.s. Im not fat im big boned :thumbsup:

  • RdrMtn

Posted September 16, 2007 - 01:29 PM


I want to do the same thing to my 650R this winter. I have 3 questions if you don't mind:

1) What bike to you have?

2) What spring rate did you get for the rear?

3) How much do you weigh?


  • heavyhitter

Posted September 16, 2007 - 02:02 PM



@ 350 ish :thumbsup:

XR650L :thumbsup:

.47 and 12.5 :thumbsup:

  • Whiteman

Posted September 16, 2007 - 04:36 PM


Funny you posted this today. I was looking at doing the same thing. I was looking for the best deal on the springs. So far TT seems to be the front runner. Did you have a better place you could post a link for. I was riding with Husky123 yesterday and quickly realized I need at least new springs. But my seat felt great.

  • bork

Posted September 16, 2007 - 04:41 PM


I have the 12.5 in rear & aint stiff enough! knobby ate the rear fender once & cleaned off the tag & light! I need a custom spring or quite eating . the 2nd is cheaper & better for me in long haul!

  • bosshog

Posted September 16, 2007 - 04:55 PM


I changed the front fork springs on my 650R. I left the rear spring alone so far. I'm about 200lbs. I wonder what the average weight of BRP riders really is?

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  • GlobalWarmer

Posted September 16, 2007 - 06:25 PM


I recently put 5.0's on the front and a 10.5 on the back. They were the same size as stock just more windings. I'm 225lbs on a good day without tools and water. Stiffer springs are available without preloading that much. Just call up a suspension shop. They'll tell you what you need. If it's not available they'll custom cut springs for you. They offered my a $600 price for springs and revalve to get rid of that small bump harshness.

  • martinfan30

Posted September 17, 2007 - 07:05 AM


how much were the springs and where did you get em?

  • heavyhitter

Posted September 17, 2007 - 12:38 PM



$222 @ XR's only, that was the full price with shipping. The where in stock took 2 weeks to get them. It was definatley worth the money and work.
Forks are so darn easy to do, makes no since not to upgrade.

  • Whiteman

Posted September 25, 2007 - 04:15 PM


Heavy, what fork oil weight did you use? I am putting new springs in the weekend. Also, how did you come to add one inch to the preload. Did the fork springs come with a chart? Thanks

  • heavyhitter

Posted September 25, 2007 - 04:27 PM


I used Bel Ray 10w. Factory should be 7w. Also the correct amount is 564cc.
The new springs will be shorter than the factory just measure the springs. There is a clear plastic tube you can cut to make up the difference, thats where you can add preload. I cant thing what it was right now, Im pretty smashed.... had bowling league tonight and drank a few too many.:thumbsup:

  • Whiteman

Posted September 25, 2007 - 04:43 PM


Haaaa, Thanks

  • Ryan at Eibach

Posted November 05, 2007 - 05:22 PM


Great post :worthy:

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