BMW K bikes (Bricks)

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1Back to top Go down   K100 LT Rear Shock Empty K100 LT Rear Shock on Wed Dec 04, 2013 10:11 am

K100LT Notts

K100LT Notts
Silver member
Silver member
I just finished doing my annual winter oil change, when I noticed that the rear shock had emptied its contents over the back wheel. It also had no resistance to movement = knackered shock.

In my Hayes manual it gives specifications of spring length and spring wire diameter but says Except K100LT. Does this mean that a K100 shock is not the same as one for a 1992 K100LT? (Note I do not have the Nivomat self levalling unit)

I have looked for a used shock and have ordered one from ebay as much cheaper then new unit. But now I am not sure that a K100 shock is the same.  Any advice or source for correct shock is welcome.

    

2Back to top Go down   K100 LT Rear Shock Empty Re: K100 LT Rear Shock on Wed Dec 04, 2013 10:18 am

duck

duck
Life time member
Life time member
I think some of the later LTs had a different Boge shock.

However, the frame/final drive is the same so a used shock from another K should work fine.

http://www.realoem.com/bmw/partxref.do?part=33531450850


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
98 Taxi Cab K1200RS
14 K1600GT
http://www.ClassicKBikes.com
    

3Back to top Go down   K100 LT Rear Shock Empty Re: K100 LT Rear Shock on Wed Dec 04, 2013 1:09 pm

Englishkent

Englishkent
active member
active member
The price of shocks is shocking. I'm in desparate need of a new one. The cheapest i can find it the realm ram shock (£245) which comes highly recomended, not just for value but also quality... I'll have to see what Santa brings (I'v dropped enough hints)
I would'nt consider fitting a second hand one as its likely to be at least 20 years old with a fair few miles on it (mines only done 46k and its shot)


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1988 K100lt
    

4Back to top Go down   K100 LT Rear Shock Empty Re: K100 LT Rear Shock on Wed Dec 04, 2013 2:17 pm

Brad-Man

Brad-Man
Life time member
Life time member
If you do NOT have a Paralever rear suspension then andy of the early K100 shocks will work.

Paralever suspensions require a longer shock.

    

5Back to top Go down   K100 LT Rear Shock Empty Re: K100 LT Rear Shock on Wed Dec 04, 2013 3:02 pm

the.postman

avatar
Life time member
Life time member
@Englishkent wrote:
I would'nt consider fitting a second hand one as its likely to be at least 20 years old with a fair few miles on it (mines only done 46k and its shot)
Not all second-hand shocks are as old as the bike they came from. I got a nice Fournales air shock second-hand. I've seen others on 'tinter-net like RAM, White power, Hagon etc for sale which are obviously newer than the bikes they came from.


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1985 K100 RS   104EA49840092        #0081788     SILVERish (Madison) Prod. date 05/12/84
1984 srx 600
1986 cbr1000f/h
    

6Back to top Go down   K100 LT Rear Shock Empty Re: K100 LT Rear Shock on Wed Dec 04, 2013 3:57 pm

Comberjohn

Comberjohn
Life time member
Life time member
Try James Sherlock  in Devon. They will supply a new Bilstein damper unit for £112.80.
Easily changed with a small cold chisel and a big hammer. I've done it!
Gives you virtually a new original shock. Don't forget to paint the spring while you have it apart.
My current RT came with a Hagon. Only marginally better than an original.
All the monolevers take the same unit. Don't buy a 2nd hand Boge (Nivomat). Too old now.


__________________________________________________
Life is not a rehearsal.
2010 VFR 1200F DCT 
2010 R1200GS(gone)
1986 K100 Silver(gone)
2012 K1600GT(gone)
1984 K100RT Madison Silver(gone)
1989 K100LT Stratus Grey(gone)
1984 K100 Red(gone)
http://www.johnsdrivingschool.co
    

7Back to top Go down   K100 LT Rear Shock Empty Shock change on Mon Dec 09, 2013 8:23 pm

K100LT Notts

K100LT Notts
Silver member
Silver member
I received my used shock and have fitted it. So far so good. Now that I have a spare bust one I will visit Sherlock (when I next go to Exmoor) and see if I can replace the damper myself with a new one  That would be the best for the future.

I would be grateful for any advice on how to change the damper in the unit - I am thinking of using luggage straps to compress the coil to so i can undo the end off the damper shaft.

    

8Back to top Go down   K100 LT Rear Shock Empty Re: K100 LT Rear Shock on Tue Dec 10, 2013 4:29 am

Comberjohn

Comberjohn
Life time member
Life time member
Don't worry,  replacement damper comes with instructions. You use a small cold chisel to remove the tabs on the damper body that the adjuster rests against. Shock then dismantles.
Put the damper rod in a vice and unscrew the eye end.
Not sure if you can compress the spring with straps. I borrowed a pair of small car spring compressers. The eye end is then screwed back on to the damper rod  using Loctite on the threads.
Give the spring a lick of paint while it's apart.


__________________________________________________
Life is not a rehearsal.
2010 VFR 1200F DCT 
2010 R1200GS(gone)
1986 K100 Silver(gone)
2012 K1600GT(gone)
1984 K100RT Madison Silver(gone)
1989 K100LT Stratus Grey(gone)
1984 K100 Red(gone)
http://www.johnsdrivingschool.co
    

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