Sat Aug 04, 2007 7:38 pm

Ossessionato
01 ET2 - 01 ET4 -- 05 GT200L / 05 PX150 / 1986? Honda CH150 Deluxe.
Joined: 27 Nov 2005
Posts: 3000
Location: SoCal OC
 
Ossessionato
01 ET2 - 01 ET4 -- 05 GT200L / 05 PX150 / 1986? Honda CH150 Deluxe.
Joined: 27 Nov 2005
Posts: 3000
Location: SoCal OC
Sat Aug 04, 2007 7:38 pm linkquote
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.


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 lower shock mount showing the upper socket head bolt removed.


The new GTS shock.


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.


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.


The flat end points forward and has the cable bracket installed on it.



Last edited by Ifixjets on Sun Aug 05, 2007 7:55 pm; edited 3 times in total
Sat Aug 04, 2007 7:42 pm

Ossessionato
01 ET2 - 01 ET4 -- 05 GT200L / 05 PX150 / 1986? Honda CH150 Deluxe.
Joined: 27 Nov 2005
Posts: 3000
Location: SoCal OC
 
Ossessionato
01 ET2 - 01 ET4 -- 05 GT200L / 05 PX150 / 1986? Honda CH150 Deluxe.
Joined: 27 Nov 2005
Posts: 3000
Location: SoCal OC
Sat Aug 04, 2007 7:42 pm linkquote
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.


I used super glue to attach the lock washers to the upper mounting bracket.


The new shock installed.


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. :)

Mon Aug 06, 2007 7:16 pm

Ossessionato
01 ET2 - 01 ET4 -- 05 GT200L / 05 PX150 / 1986? Honda CH150 Deluxe.
Joined: 27 Nov 2005
Posts: 3000
Location: SoCal OC
 
Ossessionato
01 ET2 - 01 ET4 -- 05 GT200L / 05 PX150 / 1986? Honda CH150 Deluxe.
Joined: 27 Nov 2005
Posts: 3000
Location: SoCal OC
Mon Aug 06, 2007 7:16 pm linkquote
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.
Mon Aug 06, 2007 9:23 pm

Banned
29,000 miles on my atlantic pastel green 2007 GTS 250
Joined: 11 Apr 2007
Posts: 4332
Location: Utah Valley
 
Banned
29,000 miles on my atlantic pastel green 2007 GTS 250
Joined: 11 Apr 2007
Posts: 4332
Location: Utah Valley
Mon Aug 06, 2007 9:23 pm linkquote
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?



Tue Aug 07, 2007 12:52 am

Sergeant at Arms
Weird 80's Vespas & Cool Vintage Lambrettas
Joined: 21 Oct 2005
Posts: 11117
Location: The state of insanity, SoCal
 
Sergeant at Arms
Weird 80's Vespas & Cool Vintage Lambrettas
Joined: 21 Oct 2005
Posts: 11117
Location: The state of insanity, SoCal
Tue Aug 07, 2007 12:52 am linkquote
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
Thu Aug 16, 2007 8:18 am

Moderator
2010 Dragon Red GTS 300 Super, 2018 Grigio Titanio Piaggio Liberty S 150
Joined: 11 Jul 2006
Posts: 16293
Location: Toronto, Canada, Fort Lauderdale, Florida
 
Moderator
2010 Dragon Red GTS 300 Super, 2018 Grigio Titanio Piaggio Liberty S 150
Joined: 11 Jul 2006
Posts: 16293
Location: Toronto, Canada, Fort Lauderdale, Florida
Thu Aug 16, 2007 8:18 am linkquote
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 between posts    ⬇️
Thu Sep 27, 2007 6:18 am

Member
2002 Vespa PX200 Disc
Joined: 16 Nov 2005
Posts: 12
Location: Lincolnshire, UK.
 
Member
2002 Vespa PX200 Disc
Joined: 16 Nov 2005
Posts: 12
Location: Lincolnshire, UK.
Thu Sep 27, 2007 6:18 am linkquote
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.
Thu Sep 27, 2007 6:29 am

Ossessionato
2010 PIAGGIO BV 500ie Tourer
Joined: 03 Jul 2007
Posts: 4644
Location: Lakeshore, ON, CANADA-Capestang,FR
 
Ossessionato
2010 PIAGGIO BV 500ie Tourer
Joined: 03 Jul 2007
Posts: 4644
Location: Lakeshore, ON, CANADA-Capestang,FR
Thu Sep 27, 2007 6:29 am linkquote
Excellent write up.

Looks as though the GTS shock is a much better replacement than the original GT unit.
⬆️    About 4 months elapsed between posts    ⬇️
Thu Jan 17, 2008 3:00 am

Member
2002 Vespa PX200 Disc
Joined: 16 Nov 2005
Posts: 12
Location: Lincolnshire, UK.
 
Member
2002 Vespa PX200 Disc
Joined: 16 Nov 2005
Posts: 12
Location: Lincolnshire, UK.
Thu Jan 17, 2008 3:00 am linkquote
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.
Thu Jan 17, 2008 5:46 pm

Lurker
200GT
Joined: 10 Jan 2008
Posts: 3
Location: Wake Forest. NC
 
Lurker
200GT
Joined: 10 Jan 2008
Posts: 3
Location: Wake Forest. NC
Thu Jan 17, 2008 5:46 pm linkquote
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
Thu Jan 17, 2008 10:43 pm

Hooked
2006 GT 200
Joined: 03 Sep 2007
Posts: 311
Location: Honolulu, Hawaii
 
Hooked
2006 GT 200
Joined: 03 Sep 2007
Posts: 311
Location: Honolulu, Hawaii
Thu Jan 17, 2008 10:43 pm linkquote
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).
Tue Feb 12, 2008 3:29 pm

Hooked
Vespa GTS 250 + Vespa SS 180
Joined: 07 Feb 2008
Posts: 293
Location: Rome - Italy
 
Hooked
Vespa GTS 250 + Vespa SS 180
Joined: 07 Feb 2008
Posts: 293
Location: Rome - Italy
Tue Feb 12, 2008 3:29 pm linkquote
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 between posts    ⬇️
Thu Mar 20, 2008 6:49 pm

Ossessionato
01 ET2 - 01 ET4 -- 05 GT200L / 05 PX150 / 1986? Honda CH150 Deluxe.
Joined: 27 Nov 2005
Posts: 3000
Location: SoCal OC
 
Ossessionato
01 ET2 - 01 ET4 -- 05 GT200L / 05 PX150 / 1986? Honda CH150 Deluxe.
Joined: 27 Nov 2005
Posts: 3000
Location: SoCal OC
Thu Mar 20, 2008 6:49 pm linkquote
I do sometimes scrape the sidestand while turning hard left, I just try not to do it too often! hehehehe.
⬆️    About 1 year elapsed between posts    ⬇️
Sun Jun 14, 2009 12:36 am

Member
2003 GT 125 / 2008 GTS 125
Joined: 26 Apr 2009
Posts: 6
Location: London
 
Member
2003 GT 125 / 2008 GTS 125
Joined: 26 Apr 2009
Posts: 6
Location: London
Sun Jun 14, 2009 12:36 am linkquote
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?


And it only took an hour in total


The bikes bucket makes for a surprisingly good jack.

Sun Jun 14, 2009 5:52 am

Banned
GT200, LX150, Lambretta LD150, Lambretta B 125, Lambretta D150, 1949 Vespa Rod Model
Joined: 26 Nov 2005
Posts: 368
Location: San Diego
 
Banned
GT200, LX150, Lambretta LD150, Lambretta B 125, Lambretta D150, 1949 Vespa Rod Model
Joined: 26 Nov 2005
Posts: 368
Location: San Diego
Sun Jun 14, 2009 5:52 am linkquote
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 between posts    ⬇️
Mon Apr 12, 2010 5:26 am

Hooked
09 Mana, 07 GT-200, 04 R1 SBK, 07 GT-60, 11 RSV4 Factory APRC
Joined: 21 Jan 2010
Posts: 227
Location: NYC
 
Hooked
09 Mana, 07 GT-200, 04 R1 SBK, 07 GT-60, 11 RSV4 Factory APRC
Joined: 21 Jan 2010
Posts: 227
Location: NYC
Mon Apr 12, 2010 5:26 am linkquote
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.
Wed May 05, 2010 6:08 am

Enthusiast
2006 Midnight Blue GT200
Joined: 14 Sep 2006
Posts: 56
Location: Anaheim Hills, CA
 
Enthusiast
2006 Midnight Blue GT200
Joined: 14 Sep 2006
Posts: 56
Location: Anaheim Hills, CA
Wed May 05, 2010 6:08 am linkquote
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?
Wed May 05, 2010 6:50 am

Hooked
09 Mana, 07 GT-200, 04 R1 SBK, 07 GT-60, 11 RSV4 Factory APRC
Joined: 21 Jan 2010
Posts: 227
Location: NYC
 
Hooked
09 Mana, 07 GT-200, 04 R1 SBK, 07 GT-60, 11 RSV4 Factory APRC
Joined: 21 Jan 2010
Posts: 227
Location: NYC
Wed May 05, 2010 6:50 am linkquote
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?
Sat May 08, 2010 6:04 am

Enthusiast
2006 Midnight Blue GT200
Joined: 14 Sep 2006
Posts: 56
Location: Anaheim Hills, CA
 
Enthusiast
2006 Midnight Blue GT200
Joined: 14 Sep 2006
Posts: 56
Location: Anaheim Hills, CA
Sat May 08, 2010 6:04 am linkquote
Thanks Mike!

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

On my roster for scooter mods
⬆️    About 6 months elapsed between posts    ⬇️
Wed Nov 03, 2010 10:21 am

Enthusiast
VESPA GTS 300 ie Super
Joined: 13 Sep 2010
Posts: 53
Location: Belgium
 
Enthusiast
VESPA GTS 300 ie Super
Joined: 13 Sep 2010
Posts: 53
Location: Belgium
Wed Nov 03, 2010 10:21 am linkquote
The chrome one look much better.
⬆️    About 6 months elapsed between posts    ⬇️
Tue May 17, 2011 4:09 am

Member
Scarabeo 500 light
Joined: 16 Jun 2009
Posts: 34
Location: Australia
 
Member
Scarabeo 500 light
Joined: 16 Jun 2009
Posts: 34
Location: Australia
Tue May 17, 2011 4:09 am linkquote
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 between posts    ⬇️
Thu Dec 26, 2013 5:01 am

Member
Piaggio ET2 50
Joined: 28 Apr 2013
Posts: 7
Location: Malta
 
Member
Piaggio ET2 50
Joined: 28 Apr 2013
Posts: 7
Location: Malta
Thu Dec 26, 2013 5:01 am linkquote
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
Fri Dec 27, 2013 11:26 am

Banned
GTS 300
Joined: 25 Jul 2013
Posts: 417
Location: Rancho Mirage Calif
 
Banned
GTS 300
Joined: 25 Jul 2013
Posts: 417
Location: Rancho Mirage Calif
Fri Dec 27, 2013 11:26 am linkquote
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 between posts    ⬇️
Fri Jan 24, 2014 9:10 pm

Enthusiast
Various
Joined: 20 Nov 2007
Posts: 51
Location: New Zealand (Christchurch)
 
Enthusiast
Various
Joined: 20 Nov 2007
Posts: 51
Location: New Zealand (Christchurch)
Fri Jan 24, 2014 9:10 pm linkquote
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.
Thu Feb 06, 2014 3:06 pm

Member
2007 Piaggio MP3 250ie
Joined: 02 Jun 2013
Posts: 21
Location: Philadelphia PA USA
 
Member
2007 Piaggio MP3 250ie
Joined: 02 Jun 2013
Posts: 21
Location: Philadelphia PA USA
Thu Feb 06, 2014 3:06 pm linkquote
Thank you for sharing. I'm starting to have more confidence/hope in restoring my 2006 GT200 which is in desperate need.

-CS
Sun Feb 23, 2014 10:16 pm

Member
LXV 150ie 2012
Joined: 23 Feb 2014
Posts: 8
Location: new york
 
Member
LXV 150ie 2012
Joined: 23 Feb 2014
Posts: 8
Location: new york
Sun Feb 23, 2014 10:16 pm linkquote
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 between posts    ⬇️
Fri Nov 26, 2021 3:45 am

Member
Vespa GTS 300
Joined: 07 Jan 2021
Posts: 37
Location: Bulgaria
 
Member
Vespa GTS 300
Joined: 07 Jan 2021
Posts: 37
Location: Bulgaria
Fri Nov 26, 2021 3:45 am linkquote
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!
  DoubleGood Vespa Design  

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