Rebuilding old school Mulholland rear shocks

[mattd1205]

I’m considering rebuilding my old school Mulholland rear shocks for my GS750. They feel ok to me but they probably should be refreshed by now. I can see the top mount bushings are dry rotted so those need to be replaced as well. Has anyone completely rebuilt them this side of the 21st century? What parts would I need and are they still available?

Matt

[GregT]

Before starting the main criteria for rebuild or not is the condition of the chrome on the shafts.
If it's still good then yes, have at it.

Seals are main parts problem. I'd find a shop in your area who rebuild dirt bike shocks and ask them about seals.
They will have access to suppliers you won't know about.

I've done a few when I had to. It's a job I avoid now.

[Nessism]

Have you seen this webpage?

https://www.thejunkmanadv.com/boge-mulholland-shocks-info.html

A quick search of ebay suggests at least some parts still available.

[mattd1205]

Before starting the main criteria for rebuild or not is the condition of the chrome on the shafts.
If it's still good then yes, have at it.

Seals are main parts problem. I'd find a shop in your area who rebuild dirt bike shocks and ask them about seals.
They will have access to suppliers you won't know about.

I've done a few when I had to. It's a job I avoid now.

the chrome is actually really nice on the shaft. I don’t see any oil leakage around that area either but that probably means nothing considering how old they are. The only thing that I can see that is wrong with them is that the upper rubber mounts have disintegrated.

[mattd1205]

Have you seen this webpage?

https://www.thejunkmanadv.com/boge-mulholland-shocks-info.html

A quick search of ebay suggests at least some parts still available.

thank you Ed! I did see that page and that some of the stuff is still available on eBay NOS. Considering how old they are, they might just be functionally obsolete at this point. It’s kind of a bummer because I am a sucker for period correct stuff. I’m also kind of disappointed by the choices for newer shocks as they’d look really out of place on my bike and I’m not one to push my bike to the limits.

[steve murdoch]

Hagon shocks with decent performance for the price and an old school look.
Probably other places to buy them but i have always had good customer service from Z1.

https://www.z1enterprises.com/catalogsearch/result/?q=hagon

[mattd1205]

Hagon shocks with decent performance for the price and an old school look.
Probably other places to buy them but i have always had good customer service from Z1.
https://www.z1enterprises.com/catalo...esult/?q=hagon

I was considering the hagons but they might not work out for me. it looks like they’re designed to accommodate a rider that is 170-230 pounds and I weigh in at 230. I’m guessing having my girlfriend on the back won’t help matters either.

[salty_monk]

They are very similar construction to both stock and progressives, I would suspect there are a lot heavier guys than you riding around on them....

[mattd1205]

Hagon shocks with decent performance for the price and an old school look.
Probably other places to buy them but i have always had good customer service from Z1.
https://www.z1enterprises.com/catalo...esult/?q=hagon

I think I'm ready to pull the trigger on them. It looks like the only ones on Z1 that are 330mm and have the clevis at one end are CB750 specific (seen in link below). are these the ones that are used on the GS750? There's no explicit mention of compatibility with the GS750 on Z1 Enterprises and the Hagon site seems to think that 8 valve GS750s came with an eye to eye setup instead of the eye to clevis setup. very confusing.. thanks Matt

https://www.z1enterprises.com/hagon-rs-shocks-standard-330mm-cb750-sohc-cb650sc.html