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Author Topic: Replacing Rear Shock  (Read 4307 times)

Offline jsngrimm

  • Motobrick Curious
  • Posts: 10
Replacing Rear Shock
« on: October 21, 2017, 02:18:35 AM »
Probably very stupid, but quick and easy question. My '87 K100RS has an aftermarket shock on it, but it's leaking oil, the bushings are really shot (I can turn/wiggle it side to side a pretty scary amount), and the spring is rusted, so I bought a replacement. I'm just wondering the best way to jack the back of the bike up to install the new one, I'm used to UJMs with dual shocks where I can just change one at  a time, any ideas?  :bmwsmile
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  • Cuyahoga Falls, Ohio, USA
  • 1987 K100RS, 1982 Yamaha XJ650 Maxim, 1972 Suzuki TC-90J

Offline gazman

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  • Posts: 105
Re: Replacing Rear Shock
« Reply #1 on: October 21, 2017, 05:32:15 AM »
2 saw horse's an a 2x4 or ratchet strap around frame an tree branch or whatever
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  • west australia
  • 93 K1100LT

Offline Martin

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  • Posts: 4440
Re: Replacing Rear Shock
« Reply #2 on: October 21, 2017, 06:15:12 AM »
Place the bike on the centre stand, chock up the back wheel. You need to chock it so that the old shock just pulls off, remove old shock and fit new shock. Do not let the final drive drop as you can tear the boot, less chance of doing this if you leave the wheel on.
Regards Martin.
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  • North Lakes Queensland Australia
  • 1992 K75s Hybrid, Lefaux, Vespa V twin.

Offline The Mighty Gryphon

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Re: Replacing Rear Shock
« Reply #3 on: October 21, 2017, 11:44:16 AM »
Bike on center stand, put a thin board(I use a 1x3 x 36" long) under the rear wheel  to act as a lever.  Undo the mointing bolts and using the board, wiggle the wheel up and down as you pull on the shock.  Reverse to install.  Easy peasy.
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  • In my garage in Marilla, NY
  • '91K100RS White/Blue
Current:
'91 K100RS16V "Moby Brick Too"

Past:
'94 K75RT "Ilsa, She Wolf of the SS"
'92 K100RS16V "Moby Brick" (RIP, deceased in a vehicular assault)
'94 K75S Special Edition Dakar Yellow "Cheetos"
'89 K100RS Special Edition "Special Ed"

Offline Chaos

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  • Mars needs women!
Re: Replacing Rear Shock
« Reply #4 on: October 21, 2017, 03:41:51 PM »
What?  You skipped right to how to change it and left out "can xyz shock be rebuilt?", then "what aftermarket shock is the best?", then "they all cost too damn much",  then "this forum is no damn help at all and I'm leaving and never coming back!" :clap: :hehehe
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  • sw ohio
1987 K75S    VIN 0231
Original owner, Original litter
200,000 miles (plus or minus) and 5 paint jobs
sold 6/23
2023 Ural 2WD sidecar (BMW's bastard step child)

Offline Andrew2

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Re: Replacing Rear Shock
« Reply #5 on: October 21, 2017, 07:39:22 PM »
  I'm also interested if the standard shock can be rebuilt and if not what aftermarket alternatives are available without breaking the bank. I know Ikon here in Australia are one option.

  Cheers
  Andrew
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  • Wollongong, Australia
  • 1987 K100RS
It is no measure of one's health to be well adjusted to a profoundly sick society

Offline Martin

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Re: Replacing Rear Shock
« Reply #6 on: October 21, 2017, 10:32:22 PM »
RAD in Brisbane rebuild OEM shocks and are slightly upgraded. I'm on my second one in twenty years. They are a lot better than some and not quite as good as some. However I will keep on using them as they are fine definitely for the price which I think last time was under $300.00 Au.
Regards Martin.
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  • North Lakes Queensland Australia
  • 1992 K75s Hybrid, Lefaux, Vespa V twin.

Offline jsngrimm

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Re: Replacing Rear Shock
« Reply #7 on: October 21, 2017, 11:18:15 PM »
Quote from: Chaos on October 21, 2017, 03:41:51 PM
What?  You skipped right to how to change it and left out "can xyz shock be rebuilt?", then "what aftermarket shock is the best?", then "they all cost too damn much",  then "this forum is no damn help at all and I'm leaving and never coming back!" :clap: :hehehe

They do all cost too damn much, I can get a set of UJM twin shocks for what I paid for a used OEM K100 monoshock  :hehehe Shock on there is a nice Works Racer with gas damping but it's just shot all to hell, bushings, seals, spring, everything is corroded or leaking. Easier to just get another one
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  • Cuyahoga Falls, Ohio, USA
  • 1987 K100RS, 1982 Yamaha XJ650 Maxim, 1972 Suzuki TC-90J

Offline Andrew2

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  • Posts: 52
Re: Replacing Rear Shock
« Reply #8 on: October 22, 2017, 01:06:27 AM »



  Thanks Martin, I'll keep them in mind.


  Cheers
  Andrew
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  • Wollongong, Australia
  • 1987 K100RS
It is no measure of one's health to be well adjusted to a profoundly sick society
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