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Old 10 Aug 2004
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Join Date: Nov 2001
Location: Paris, France
Posts: 660
putting a r80g/s MONOLEVER on a r100gs pd PARALEVER : clever


my r100 gs pd (PARALEVER) is well damaged after my trip, especially the rear of the bike : the paralever itself, the rear shock absorber, the shaft, the final drive, the gearbox.

first, i wanted to repair it (lots of euros in europe), then sell it, in order to buy a r80g/s (MONOLEVER).

recently, some people told me that i could put quite easily a MONOLEVER from a 80g/s instead of my PARALEVER. especillay yut from dynamic motors in bangkok.

first, does it make sense ? is it clever, since many people say that MONOLEVER is stronger than PARALEVER and less problems?
second, is it possible and easy or not so easy ?

little changes are necessary, from what people told me. but little here is not little there.

before starting this change, i m looking for some info, especially if someone has done it.
of course, i ll put a 80g/s MONOLEVER rear wheel if i put a 80g/s MONOLEVER.

apparently the frame is the same between a 80g/s and a 100 gs, maybe a bit longer at the rear for the 100gs.

since the MONOLEVER is shorter than the PARALEVER, the wheelbase will be little bit shorter, there will more control at low speed but less control at high speed. i can put a steering dumper to compensate this.

the mudguard has to be removed a bit more at the front.

the top fixation of of the back shock absorber to the frame has to be little bit modified.

i don t know about the fixations of the monolever to the frame in the middle on the sides but apparently no problem.

anything else i have forgotten or anything i ve written wrong ? sorry, my technical english is not so good, hope you understand what i mean

thanx a lot in advance for your good info and advice and sharing experience

happy trails


Vincent Danna

* www.va-project.com
Sept 2008 - dec 2009 : Voyage et art contemporain en Amérique du sud.

* http://vincent.danna.free.fr/
2002 - 2004 : Un tour du monde en moto.
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Old 10 Aug 2004
Grant Johnson's Avatar
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Join Date: Dec 1997
Location: Vancouver BC Canada
Posts: 4,561
Going the way you are is quite possible, and you have mostly correct info - BUT the battery will have to be changed to a much smaller one.

The SHAFT is better on the monolever, but the rear wheel is NOT as strong. They changed it from a 3 bolt mount on the monolever to a 4 bolt mount on the paralever, and beefed up the hub generally. I have cracked a monolever hub and had to replace it. US$1000 new, no used available at the time.

Also the monolever wheel is tube-type, not near as good as the tubeless paralever wheel.

I'm considering going the OTHER way - monolever to paralever. BUT it's much harder, the frame needs to be modified. Yours already has the mods, and going BACK to a paralever is not a problem in the frame, just the fender and battery.

Overall, if I were you I'd just find a used paralever. The difference in price between a complete used paralever or a monolever can't be significant, especially if you have to buy a wheel as well - I assume your wheel at least is ok.

The only real problem with the paralever is the driveshaft, which you have to treat as a maintenance item, like you would a chain on a chain drive bike. The rest of the paralever setup is pretty good - assuming maintenance is carried out as needed. You can't just drive ANY bike without maintaining it over many thousands of miles. They'll ALL fail eventually somewhere.

Grant Johnson

Seek, and ye shall find.


One world, Two wheels.
Grant Johnson

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