OP
@ifixjets avatar
UTC

Ossessionato
01 ET2 - 01 ET4 -- 05 GT200L / 05 PX150 / 1986 Honda CH150 Deluxe.
Joined: UTC
Posts: 3003
Location: SoCal PS area
 
Ossessionato
@ifixjets avatar
01 ET2 - 01 ET4 -- 05 GT200L / 05 PX150 / 1986 Honda CH150 Deluxe.
Joined: UTC
Posts: 3003
Location: SoCal PS area
UTC quote
I changed my front shock today, the stock GT shock went flat at 11,500 miles. The GTS shock looks nice and is a bit more robust.

Tools you will need are...

13mm socket with a short wobble extension, 13 mm open end wrench, 6mm allen wrench to remove the front wheel and to remove the 2 lower shock bolts. Some lock-tite and some super glue to hold the washers in place when reinstalling the upper shock mount nuts.
I bought a cheap MC jack from Harbor frieght, $59.95
If you have a side stand, extend it so the jack rests flat on the underside of the scoot.
I bought a cheap MC jack from Harbor frieght, $59.95 If you have a side stand, extend it so the jack rests flat on the underside of the scoot.
With the front wheel removed, you can access the shock mounts under the fender much easier.
With the front wheel removed, you can access the shock mounts under the fender much easier.
The upper shock mount has a rounded end and a flat end, the flat end has the cable bracket installed on it. The bolts for the mounts are loose. The bolt heads rest in a socket to keep them from turing when they are removed and installed. They can come out
The upper shock mount has a rounded end and a flat end, the flat end has the cable bracket installed on it. The bolts for the mounts are loose. The bolt heads rest in a socket to keep them from turing when they are removed and installed. They can come out
The lower shock mount showing the upper socket head bolt removed.
The lower shock mount showing the upper socket head bolt removed.
The new GTS shock.
The new GTS shock.
The old shock with the upper mount bracket removed.
The old shock with the upper mount bracket removed.
The upper shock mount on the fork. You can see the bracket for the cable is on the forward side of the mount.
The upper shock mount on the fork. You can see the bracket for the cable is on the forward side of the mount.
Installing the upper shock mount plate to the new GTS Shock, notice the flat sides of the new shock, they should align closely with the mount holes for the bracket, it makes it a little easier to get a socket on the nuts. I used the open end 13mm wrench o
Installing the upper shock mount plate to the new GTS Shock, notice the flat sides of the new shock, they should align closely with the mount holes for the bracket, it makes it a little easier to get a socket on the nuts. I used the open end 13mm wrench o
Another look at the upper shock mount point.
Another look at the upper shock mount point.
The flat end points forward and has the cable bracket installed on it.
The flat end points forward and has the cable bracket installed on it.
⚠️ Last edited by Ifixjets on UTC; edited 3 times
OP
@ifixjets avatar
UTC

Ossessionato
01 ET2 - 01 ET4 -- 05 GT200L / 05 PX150 / 1986 Honda CH150 Deluxe.
Joined: UTC
Posts: 3003
Location: SoCal PS area
 
Ossessionato
@ifixjets avatar
01 ET2 - 01 ET4 -- 05 GT200L / 05 PX150 / 1986 Honda CH150 Deluxe.
Joined: UTC
Posts: 3003
Location: SoCal PS area
UTC quote
Continuation of shock mounting....
Here are more pictures of the shock replacement on the GT/GTS
The lower end of the shock has the nuts welded in place from the factory.
The lower end of the shock has the nuts welded in place from the factory.
I used super glue to attach the lock washers to the upper mounting bracket.
I used super glue to attach the lock washers to the upper mounting bracket.
The new shock installed.
The new shock installed.
It is looking nice, with the chrome spring. It matches the rest of the bike.
It is looking nice, with the chrome spring. It matches the rest of the bike.
Here is a pic of the side stand with the single large spring. It doesnt retract unless I push it backwards. I have not had the scoot fall over yet. :)
Here is a pic of the side stand with the single large spring. It doesnt retract unless I push it backwards. I have not had the scoot fall over yet. :)
OP
@ifixjets avatar
UTC

Ossessionato
01 ET2 - 01 ET4 -- 05 GT200L / 05 PX150 / 1986 Honda CH150 Deluxe.
Joined: UTC
Posts: 3003
Location: SoCal PS area
 
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@ifixjets avatar
01 ET2 - 01 ET4 -- 05 GT200L / 05 PX150 / 1986 Honda CH150 Deluxe.
Joined: UTC
Posts: 3003
Location: SoCal PS area
UTC quote
New Shock ....
After the installation, when I sat on the scoot, it was at least 2" taller in the front. I didnt realize how much the original shock was worn. It now rides great and is very solid. It was an easy install, well worth the price over an aftermarket shock. I just can't see spending that much on a BiTubo.
@windbreaker avatar
UTC

Banned
29,000 miles on my atlantic pastel green 2007 GTS 250
Joined: UTC
Posts: 4332
Location: Utah Valley
 
Banned
@windbreaker avatar
29,000 miles on my atlantic pastel green 2007 GTS 250
Joined: UTC
Posts: 4332
Location: Utah Valley
UTC quote
Great write-up, and well illustrated! I was wondering when mine is due. Problem with shocks is, you don't notice them deteriorating, because you get used to it. Only when they completely fail is it clear.

I wonder how long a GTS shock lasts under normal conditions.

On your top mount base, it looks as if there's a bolt missing (in the white circle). Is it?
Forum member supplied image with no explanatory text
@greasy125 avatar
UTC

Sergeant at Arms
Weird 80's Vespas & Cool Vintage Lambrettas
Joined: UTC
Posts: 15089
Location: The state of insanity, SoCal
 
Sergeant at Arms
@greasy125 avatar
Weird 80's Vespas & Cool Vintage Lambrettas
Joined: UTC
Posts: 15089
Location: The state of insanity, SoCal
UTC quote
yes, there is a bolt missing there.
it is one of three that mounts the fender to the fork. it's a small shouldered phillips top with a washered nut from the bottom.

best,
-greasy
@benito avatar
UTC

Moderator
2010 Dragon Red GTS 300 Super, 2018 Grigio Titanio Piaggio Liberty S 150
Joined: UTC
Posts: 16296
Location: Toronto, Canada, Fort Lauderdale, Florida
 
Moderator
@benito avatar
2010 Dragon Red GTS 300 Super, 2018 Grigio Titanio Piaggio Liberty S 150
Joined: UTC
Posts: 16296
Location: Toronto, Canada, Fort Lauderdale, Florida
UTC quote
Thanks for posting this illustrated step by step on the installation of the GTS shock on the GT. It is very helpful.
⬆️    About 1 month elapsed    ⬇️
@bigscottyj avatar
UTC

Member
2002 Vespa PX200 Disc
Joined: UTC
Posts: 12
Location: Lincolnshire, UK.
 
Member
@bigscottyj avatar
2002 Vespa PX200 Disc
Joined: UTC
Posts: 12
Location: Lincolnshire, UK.
UTC quote
Anybody got any idea of how to strip the front shock absorber?
I would like to remove and replace the spring.
I have got the top bracket off as per ifxjets's instructions.
But now I have come to a grinding halt?
Any ideas?

Thanks in advance.
@en82pg avatar
UTC

Ossessionato
2010 PIAGGIO BV 500ie Tourer
Joined: UTC
Posts: 4644
Location: Lakeshore, ON, CANADA-Capestang,FR
 
Ossessionato
@en82pg avatar
2010 PIAGGIO BV 500ie Tourer
Joined: UTC
Posts: 4644
Location: Lakeshore, ON, CANADA-Capestang,FR
UTC quote
Excellent write up.

Looks as though the GTS shock is a much better replacement than the original GT unit.
⬆️    About 4 months elapsed    ⬇️
@bigscottyj avatar
UTC

Member
2002 Vespa PX200 Disc
Joined: UTC
Posts: 12
Location: Lincolnshire, UK.
 
Member
@bigscottyj avatar
2002 Vespa PX200 Disc
Joined: UTC
Posts: 12
Location: Lincolnshire, UK.
UTC quote
Oh dear!
I have finally got around to re-assembling my front shocker. Got my new uprated spring from SP4Y (thanks Laur).

Went to get the shocker of the shelf in my garage & noticed it was lying in a pool of what smells like hydraulic oil...balls!

I assume it has leaked out whilst dis-assembled. So 3 questions for the experts out there;

Does this mean it is well & truly knackered?

Is there a quick fix?

Do I have to buy a new shocker?

Thanks in advance guys.
@vproven avatar
UTC

Lurker
200GT
Joined: UTC
Posts: 3
Location: Wake Forest. NC
 
Lurker
@vproven avatar
200GT
Joined: UTC
Posts: 3
Location: Wake Forest. NC
UTC quote
GT/GTS Shock Change
Where did you get the new shocks and how much were they? BTW, thanks for the detailed pics.

Also, I like the side stand, but I am curious if it gets in the way when you lean the scooter over in left turns?

Thanks,

Vince
@jimbo avatar
UTC

Hooked
2006 GT 200
Joined: UTC
Posts: 311
Location: Honolulu, Hawaii
 
Hooked
@jimbo avatar
2006 GT 200
Joined: UTC
Posts: 311
Location: Honolulu, Hawaii
UTC quote
Thanks for your excellent instructions. You know, I'm thinking that the collective teachings and personalities of MV would make a great publication, in the spirit of "How to Keep Your Volkswagen Alive" (although without those great grass-fed illustrations).
UTC

Hooked
Vespa GTS 250 + Vespa SS 180
Joined: UTC
Posts: 293
Location: Rome - Italy
 
Hooked
Vespa GTS 250 + Vespa SS 180
Joined: UTC
Posts: 293
Location: Rome - Italy
UTC quote
As for the bitubo, I changed today from original GTS to bitubo, after 6000km, and wheee what a difference.

It's like comparing a LandRover Defender to a Citroen - now it floats over the cobblestone of Romes streets

Just also realized that I have to change the back absorbers as well, since it feels like riding a fixed tail HD now; my kidneys are killing me
⬆️    About 1 month elapsed    ⬇️
OP
@ifixjets avatar
UTC

Ossessionato
01 ET2 - 01 ET4 -- 05 GT200L / 05 PX150 / 1986 Honda CH150 Deluxe.
Joined: UTC
Posts: 3003
Location: SoCal PS area
 
Ossessionato
@ifixjets avatar
01 ET2 - 01 ET4 -- 05 GT200L / 05 PX150 / 1986 Honda CH150 Deluxe.
Joined: UTC
Posts: 3003
Location: SoCal PS area
UTC quote
I do sometimes scrape the sidestand while turning hard left, I just try not to do it too often! hehehehe.
⬆️    About 1 year elapsed    ⬇️
@brianmcnulty avatar
UTC

Member
2003 GT 125 / 2008 GTS 125
Joined: UTC
Posts: 6
Location: London
 
Member
@brianmcnulty avatar
2003 GT 125 / 2008 GTS 125
Joined: UTC
Posts: 6
Location: London
UTC quote
Good Work
Hey Jet Dude,

Nice one for the write up, we followed your instructions to the T, well sort of, and one thing we learn't was that London's roads are a little grubbier than the bleached runway you get to play on!
make sure you have a good tool set we nearly didn't get that right nut re-tightened.

But whats missing kids?
make sure you have a good tool set we nearly didn't get that right nut re-tightened. But whats missing kids?
And it only took an hour in total
And it only took an hour in total
The bikes bucket makes for a surprisingly good jack.
The bikes bucket makes for a surprisingly good jack.
@emcosa avatar
UTC

Banned
GT200, LX150, Lambretta LD150, Lambretta B 125, Lambretta D150, 1949 Vespa Rod Model
Joined: UTC
Posts: 368
Location: San Diego
 
Banned
@emcosa avatar
GT200, LX150, Lambretta LD150, Lambretta B 125, Lambretta D150, 1949 Vespa Rod Model
Joined: UTC
Posts: 368
Location: San Diego
UTC quote
If anyone else is enterested in doing this up grade I have a GTS front shock, in new condition. Asking $75
⬆️    About 1 year elapsed    ⬇️
UTC

Hooked
09 Mana, 07 GT-200, 04 R1 SBK, 07 GT-60, 11 RSV4 Factory APRC
Joined: UTC
Posts: 227
Location: NYC
 
Hooked
09 Mana, 07 GT-200, 04 R1 SBK, 07 GT-60, 11 RSV4 Factory APRC
Joined: UTC
Posts: 227
Location: NYC
UTC quote
I just installed the 300 Super shock (56452R) and black mp3-500 wheels (649372) on my GT200. The wheels were just to make me happy but the shock made a _TREMENDOUS_ difference, the scooter feels much much more stable at speed over bumps and NYC potholes.
@bucardo avatar
UTC

Enthusiast
2006 Midnight Blue GT200
Joined: UTC
Posts: 56
Location: Anaheim Hills, CA
 
Enthusiast
@bucardo avatar
2006 Midnight Blue GT200
Joined: UTC
Posts: 56
Location: Anaheim Hills, CA
UTC quote
slowmike wrote:
I just installed the 300 Super shock (56452R) and black mp3-500 wheels (649372) on my GT200. The wheels were just to make me happy but the shock made a _TREMENDOUS_ difference, the scooter feels much much more stable at speed over bumps and NYC potholes.
Thanks for posting this!

I've e-mailed Vespa twice to see if the Super's shock is improved (e.g. better damping) and if it will fit.

A few questions please:

Your 07 GT200 had the chrome shock?
How many miles when you changed shock? Old one going bad?
Ever notice a slight wobble or "floaty" feeling when cornering ~30 mph?
Did the new shock improve ride only or handling too?
No issues on install?
UTC

Hooked
09 Mana, 07 GT-200, 04 R1 SBK, 07 GT-60, 11 RSV4 Factory APRC
Joined: UTC
Posts: 227
Location: NYC
 
Hooked
09 Mana, 07 GT-200, 04 R1 SBK, 07 GT-60, 11 RSV4 Factory APRC
Joined: UTC
Posts: 227
Location: NYC
UTC quote
My GT had the chrome shock. I changed out my shock/wheels with 400 miles on the bike.

I noticed the floaty Cadillac feeling on my bike, did not notice that feeling on my buddy's 300 super and made the switch.

Having had both out of the bike it feels like the difference is in the shim stack, less un-dampened movement at small amounts of movement and a slightly stiffer rate on the spring.

It was a straight bolt up, I took the front wheel off, and used some pencil erasers to hold the nuts on the backside in place and it took me less than 15 min (not counting the other stuff).

That being said, unless you're comfortable trusting your own work, I would suggest taking it to a dealer. Any of these bolts coming loose will result in a crash, so you do need to be sure that it's done correctly (torque wrench, locktite and safety wire are your friends).
Bucardo wrote:
slowmike wrote:
I just installed the 300 Super shock (56452R) and black mp3-500 wheels (649372) on my GT200. The wheels were just to make me happy but the shock made a _TREMENDOUS_ difference, the scooter feels much much more stable at speed over bumps and NYC potholes.
Thanks for posting this!

I've e-mailed Vespa twice to see if the Super's shock is improved (e.g. better damping) and if it will fit.

A few questions please:

Your 07 GT200 had the chrome shock?
How many miles when you changed shock? Old one going bad?
Ever notice a slight wobble or "floaty" feeling when cornering ~30 mph?
Did the new shock improve ride only or handling too?
No issues on install?
@bucardo avatar
UTC

Enthusiast
2006 Midnight Blue GT200
Joined: UTC
Posts: 56
Location: Anaheim Hills, CA
 
Enthusiast
@bucardo avatar
2006 Midnight Blue GT200
Joined: UTC
Posts: 56
Location: Anaheim Hills, CA
UTC quote
Thanks Mike!

I was hoping for a little more spring rate and rebound damping.

On my roster for scooter mods
⬆️    About 6 months elapsed    ⬇️
@dds30 avatar
UTC

Enthusiast
VESPA GTS 300 ie Super
Joined: UTC
Posts: 53
Location: Belgium
 
Enthusiast
@dds30 avatar
VESPA GTS 300 ie Super
Joined: UTC
Posts: 53
Location: Belgium
UTC quote
The chrome one look much better.
⬆️    About 6 months elapsed    ⬇️
UTC

Member
Scarabeo 500 light
Joined: UTC
Posts: 34
Location: Australia
 
Member
Scarabeo 500 light
Joined: UTC
Posts: 34
Location: Australia
UTC quote
I cant seem to get the top suspension mount off the factory suspension. Is there a particular trick to it? I have the factory shock off the bike but I cant secure it well enough to turn the bolt at the top of it to remove the mounting plate. Suggestions?
⬆️    About 3 years elapsed    ⬇️
UTC

Member
Piaggio ET2 50
Joined: UTC
Posts: 7
Location: Malta
 
Member
Piaggio ET2 50
Joined: UTC
Posts: 7
Location: Malta
UTC quote
Vespa ET2 shock absorber
I found your pics and comments very useful!
I have to change my front shock absorber and browsing online to find one for a good price that ships to Malta.?
Pls help me out what else shall I get for quick fix such as: Absorber Base Plate, ... etc.??

thx,
Bridgette
@gee-bee avatar
UTC

Banned
GTS 300
Joined: UTC
Posts: 417
Location: Rancho Mirage Calif
 
Banned
@gee-bee avatar
GTS 300
Joined: UTC
Posts: 417
Location: Rancho Mirage Calif
UTC quote
Shocking
I cant tell the difference as I changed the Bitubos on my build before picking her up

They are sweet thou...

82 miles now
⬆️    About 1 month elapsed    ⬇️
@vesba avatar
UTC

Enthusiast
Various
Joined: UTC
Posts: 51
Location: New Zealand (Christchurch)
 
Enthusiast
@vesba avatar
Various
Joined: UTC
Posts: 51
Location: New Zealand (Christchurch)
UTC quote
My 2006 GTS250ie, front and rear shocks seem to be in need of replacement at 9000kms. They have always been on the softer settings and I do about 95% road riding and about 5% shingle road riding. I've seen the test they do on them at the factory (rotating barrel with a bump) which seems good but it should have indicated their shocks fail quite early. My PX200 was very similar - early failure of the front shock. I'm about to fit some 2012 GTS300ie shocks and have the feeling they will give up life in about another 9000kms.
@cyberspy avatar
UTC

Member
2007 Piaggio MP3 250ie
Joined: UTC
Posts: 21
Location: Philadelphia PA USA
 
Member
@cyberspy avatar
2007 Piaggio MP3 250ie
Joined: UTC
Posts: 21
Location: Philadelphia PA USA
UTC quote
Thank you for sharing. I'm starting to have more confidence/hope in restoring my 2006 GT200 which is in desperate need.

-CS
UTC

Member
LXV 150ie 2012
Joined: UTC
Posts: 8
Location: new york
 
Member
LXV 150ie 2012
Joined: UTC
Posts: 8
Location: new york
UTC quote
Vespa LXV 150ie front shock problem
Hi I have Vespa LXV 150ie. How can I understand my front shock broke?

When I am turning my stear I feel so heavy.

Thank you...
⬆️    About 8 years elapsed    ⬇️
@spower avatar
UTC

Member
Vespa GTS 300
Joined: UTC
Posts: 40
Location: Bulgaria
 
Member
@spower avatar
Vespa GTS 300
Joined: UTC
Posts: 40
Location: Bulgaria
UTC quote
Hello friends, I made a video in which I would like to present you how to quickly and easily change if you need the front shock absorber of your Vespa.
If you find the video useful I will be happy to like you on YouTube. This way I will know that my efforts to shoot and process the video were not in vain! Thanks and enjoy watching!

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