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I just had to buy 2 pair from the $85.26 vendor so I can compare to the 103.99 vendor and confirm my hypothesis that they are indeed the same.

j

I chickened out on the $96.50 ones and bought ordered the $103.00 ones.  they arrived in 3 days and visually look great, I have not mic'd or measured anything yet so I will hope for the best and report back on how they turn out.  Gotta give it a try at that $. I think Mark in SC purchased the kveldwulf labeled ones and has reported in another thread.  I would definitely respect his review of them.   The question I have is, are all of these Chinese cylinders made at the same place?? Hard for me to believe that there would be enough upside in the knock off market, of a niche item, to justify "competition" amongst Chinese factories.  At these prices the china worker must "pay the factory" for the privilege of working there....WTH

j

Thanks again to everyone for taking the the time respond.

j

I go to yamahapartshouse.com and look up the respective part numbers for each model and see if they match. A perfect match means they obviously interchange. A different part number does not necessarily mean its a "NO-GO" just need to do more research to confirm or deny fitment. On some models you must change an interworking group of parts to gain compatibility/interchangeability.

j

Jim,

id try a set IF they made them for a 350. I mean, 400 chambers work ok on a 350 but still. 

I have a set for the TZR, the build quality is really, really good. 

Which "brand" are you referring to that you would try, that you have for the TZR that are really good build quality

thanks
j

Thanks again to everyone who posted numbers for Gary.  I got in touch with him and got on the list....he is still in the process of moving but hopes to be up and running before too long.  I made an offer on the NOS Moto Carreras on Ebay but he had already sold them locally and had not taken them down. I have looked at the Wicked pipes and may go that way while I wait, any thoughts out there on them or how they compare to SpecII.....thanks

j

Thank yall for pointing me in the right direction,  If the SpecIIs fall through are the motto carreras being made by someone else now? or any other suggestions?  the JL's are a $$$ and DG's are my last resort as other have said they are just not worth the current price.

thanks again

jeff

New member here, I recently acquired a 76' RD400 and the stock pipes are in pretty poor shape so I am needing some form of replacement.  The bike will hopefully be restored as a very very mild restomod so I was thinking chambers. Based on what I have read here Spec II's are pretty well thought of. Are SPEC II chambers still available? if so where?  Thanks to everyone here who takes time to post on the site I really appreciate the wealth of knowledge shared here.

Thanks

Jeff in Texas