Best twinshock fork?

Lasse
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Lasse
Edited Date/Time 11/22/2021 5:29am
Hi Forum!

I just purchased a C&J XR500 frame, so I am looking for suspension now.

Which forksetup would you go with? Alot go with Honda CR250 1979-80, but that is pretty rare here in Denmark.

What would you go with?
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vet323
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vet323 11/16/2021 1:38pm
11/16/2021 1:38pm
1983 CR480. Double leading shoe front brakes. Get a cartridge emulator for the forks and you are good to go.
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Lasse
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Lasse 11/16/2021 3:09pm
11/16/2021 3:09pm
vet323 wrote:
1983 CR480. Double leading shoe front brakes. Get a cartridge emulator for the forks and you are good to go.
Unfortunately it's not a twinshock
Bearuno
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Bearuno 11/16/2021 9:35pm
11/16/2021 9:35pm
Ribi Quadrilaterals!

Just kidding - going off your avatar. Though , I've seen people make their own, or somehow find Cheney front ends.

I see so many 'Twin Shocks' in Britain / Europe using the 50mm Suzuki conventionals, and wonder at their usage with regards to rules.

Then there's the CR450/480 /Air Cooled 500s that I see people mounting in Twinshock frames, or, indeed, them making frames into Twinshocks, or, whole frame build ups. Then there's the Maico frames being converted back to Twinshocks. Once again, I'm left puzzling, at times, over rules and eligibility.

I've kept well away from the whole Vintage / Vet / Twinshock scene, after seeing the conflicts that friends have endured / suffered / caused over the years. Though, I'm getting ever closer to, perhaps, putting either my 83 Floater XR, or my 89 CR / XR back together to partake in the chaos.
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WEAL
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WEAL 11/18/2021 4:32am
11/18/2021 4:32am
I got a pair of Fox air shocks - anybody interested?

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DaveB771
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DaveB771 11/18/2021 2:34pm
11/18/2021 2:34pm
Back in the day, all the cool kids used Simons Forks, but I'm guessing they're even harder to come by now than 1979-80 CR250 forks. And probably not worth what it would cost to buy them.
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FreshTopEnd
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FreshTopEnd 11/18/2021 5:18pm
11/18/2021 5:18pm
You might want to keep an eye out for the high end KYB aftermarket billet forks that were available for a short window in the late 70's.
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DaveB771
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DaveB771 11/18/2021 6:30pm
11/18/2021 6:30pm
FreshTopEnd wrote:
You might want to keep an eye out for the high end KYB aftermarket billet forks that were available for a short window in the late...
You might want to keep an eye out for the high end KYB aftermarket billet forks that were available for a short window in the late 70's.
I think they were sold under the Red Wing brand in the US.
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450exc115
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450exc115 11/19/2021 10:27am
11/19/2021 10:27am
So does that mean Yamaha's don't race in the twin shock class since there last twin shock was a 74 MX? If they allow Yamaha's up to 81 as those are the non linkage years of the monoshock you need to find a set of 43mm YZ forks. Yamaha even made a set of 43mm forks for the YZ465 in 1980 that can be used with the older single arm brake and hub.

Otherwise 38mm are the big fork for the twin shock years if you use an OEM. I wouldn't use the wet noodle 37mm forks found on the Hondas CR250s as they flexed a bunch.
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Lasse
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Lasse 11/19/2021 10:53am
11/19/2021 10:53am
450exc115 wrote:
So does that mean Yamaha's don't race in the twin shock class since there last twin shock was a 74 MX? If they allow Yamaha's up...
So does that mean Yamaha's don't race in the twin shock class since there last twin shock was a 74 MX? If they allow Yamaha's up to 81 as those are the non linkage years of the monoshock you need to find a set of 43mm YZ forks. Yamaha even made a set of 43mm forks for the YZ465 in 1980 that can be used with the older single arm brake and hub.

Otherwise 38mm are the big fork for the twin shock years if you use an OEM. I wouldn't use the wet noodle 37mm forks found on the Hondas CR250s as they flexed a bunch.
Yamahas are allowed because they don't have a link system. As far as I know, they're the only ones.
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450exc115
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450exc115 11/19/2021 11:18am
11/19/2021 11:18am
450exc115 wrote:
So does that mean Yamaha's don't race in the twin shock class since there last twin shock was a 74 MX? If they allow Yamaha's up...
So does that mean Yamaha's don't race in the twin shock class since there last twin shock was a 74 MX? If they allow Yamaha's up to 81 as those are the non linkage years of the monoshock you need to find a set of 43mm YZ forks. Yamaha even made a set of 43mm forks for the YZ465 in 1980 that can be used with the older single arm brake and hub.

Otherwise 38mm are the big fork for the twin shock years if you use an OEM. I wouldn't use the wet noodle 37mm forks found on the Hondas CR250s as they flexed a bunch.
Lasse wrote:
Yamahas are allowed because they don't have a link system. As far as I know, they're the only ones.
So find a set of 81 YZ250/465 forks in 43mm.. Which are the same forks found on the 82-83 YZs and 84/85 IT200 and 83 IT250. That the biggest set besides aftermarket that should be allowed in the YZs up to 81 are allowed in the class. Smile
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Shawbridge Husky 11/21/2021 2:59pm
11/21/2021 2:59pm
From what I understand ( loose interpretation ) is that since Simons forks were available in 1980 with 44mm dia. any brake drum type fork that diameter or lesser would be passable. Note that the early drum brake IT200 is 43mm but has shorter travel at 10.5 inches or so so that could be interesting. I have a set I want to run on a '78 YZ400E. Anyhow I'm no expert just going off of what I've read in the past when I was looking into it. Otherwise yes on the '83 CR250-480 43mm front end I plan on running them on an MX6 Can-Am build. YZ 43m IT or YZ forks are a great choice as well.
TTperra
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TTperra 11/22/2021 1:56am
11/22/2021 1:56am
We have same rules in Sweden, I think YZ 43mm is a good choise, thinking of price and availability.
It would be very nice if it was possible to convert them to cartridge, like Honda/Showa 83 to 87
darren7878 11/22/2021 5:29am
11/22/2021 5:29am
40mm Husqvarna forks work well once sprung for weight and with correct oil.

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