Which used forks do I have?

[wmcpb04]

I brought a1999 gasgas ec250 last year with conventional forks but the guy I brought it off gave me some usd forks which he said where off newer gasgas.

Is it possible to work out if they are off and gasgas and what year they are?

My final question is how easy is it to change and is it worth it bearing in mind I'm new to offloading?

Thanks

 

[Elvis74]

If the Fork is from a newer GG there are different Typs:

WP 43mm
Marzocchi 45mm
Marzocchi 48mm
Sachs 48mm
Ohlins 46mm

These are the from GG Used forks.
With the right triple clamp you can Mount them all in your Old Frame.






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[wmcpb04]

Great, the forks came with the triple clamp, so will it be a straight fit

 

[Rick]

Depends.....if your 99 had Brembo front brakes and newer forks had Nissan, you will need to convert to Nissan.

 

[cbutler]

If you have the trip. it will bolt up you will most likely have an issue with the axle. You will more than likely need to find an axle for that stile of fork(post a pix and someone can tell you which ones you have) you probably need to change front bearings and inner spacer. All very ease to o and worth the time.

 

[wmcpb04]

Thanks for the advice, the forks came with a wheel and spindle but no brake caliper. I will take a photo and post ASAP. Thank you

 

[hannesd]

why would you want to swap these out?
i'd start riding as is, then see if you think you miss something USD can offer.
i wouldn't do it just for the looks.
conventional forks can work just as good as USD...
if your USD forks are WP43mm (like mine) i'd be more the happy to swap them for your conventionals just saying...

ciao, Hannes.

 

[Cruiser]

Post a picture and yes the older conventionals can be made to work well.. but that said.. unless they are the 50mm zokes they are no where near what even basic 43 UDS wp forks are capable of. I have had both. I have a 98(somewhere in the garage) and it will be fully converted to modern forks eventually. The 45 conv zokes flex way to much and have lots of minor issues. It is a good learning platform to learn the basics of fork tuning on. The conventional forks that came on some of the suzukis were really great. They can be fitted on a GG but so can a modern YZ set of SSS forks.. If you already have them its worth your time..

 

[wmcpb04]

I have taken a photo of the forks so I hope this helps identify which ones they are. I also noticed that the fork seals are leaking as well so that will need sorting

 

[wmcpb04]

Another photo of the forks

 

[nknudsen]

Another photo of the forks

This is not a GG bottom clamp. It looks more like a Yamaha clamp. I think it's some sort of YZ front end maybe 99' ish??

 

[wmcpb04]

Does this mean it not worth doing or not possible?

 

[nknudsen]

Does this mean it not worth doing or not possible?

Try mocking it up. If Yamaha, you might need the yz stem bearings and races. Also check the caliper fitment. If you have a Nissin caliper it should bolt up. Last item would be a steering stop of some sort. Report back on the fork fitment.

 

[nknudsen]

Post a picture of the brake side lower fork leg.

 

[Moto7man]

Post a picture and yes the older conventionals can be made to work well.. but that said.. unless they are the 50mm zokes they are no where near what even basic 43 UDS wp forks are capable of. I have had both. I have a 98(somewhere in the garage) and it will be fully converted to modern forks eventually. The 45 conv zokes flex way to much and have lots of minor issues. It is a good learning platform to learn the basics of fork tuning on. The conventional forks that came on some of the suzukis were really great. They can be fitted on a GG but so can a modern YZ set of SSS forks.. If you already have them its worth your time..

Some of the conventional forks are much better than USD. Try them first. The 1987 Honda CR 250 had conventional cartridge forks. These were were some of the best forks that Honda ever made and vastly superior to Honda's early generations USD forks.I actually have a pair in my garage that I am saving for a future project.

 

[wmcpb04]

Here we go just took this photo of the brake side of the forks. Hope this helps because I don't want to go and fit something that's only going to be a cosmetic difference.

Thanks for all the help

 

[pscook]

Here we go just took this photo of the brake side of the forks. Hope this helps because I don't want to go and fit something that's only going to be a cosmetic difference.

Thanks for all the help

If it is a Yamaha set, it is pre 1998. Beyond that, I couldn't tell you the brand or model.

 

[Cruiser]

Some of the conventional forks are much better than USD. Try them first. The 1987 Honda CR 250 had conventional cartridge forks. These were were some of the best forks that Honda ever made and vastly superior to Honda's early generations USD forks.I actually have a pair in my garage that I am saving for a future project.

Yes,, the suzuki conventionals used not very long ago were great too.. but the 45mm zones used on the KTM's, Gasgas's and Huskys had lots of issues.. were OK at best for rocks or sand,, not a fork that you could really set up for both. The WP 50mm extremes were some really great forks also but had some heft to them.. The suzuki conv. ones were about the only ones I would use, I think they were 48 or 49mm forks?
The 45 conv zokes were no where close to WP43's