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Makotosun

AT1 expansion chamber

  • Schu
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AT1 expansion chamber was created by Schu

Nice pipe for an AT1 on eBay right now. I have the same pipe on my CT1B and I like it. I’m tempted to take a swing at it in case I ever get an AT1. 

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eBay item number:156014845060

ebay link to pipe

 
Schu

CT1B, CT1C, JT1, JT2, DT360A, GT80B, DT100B, DT125B,
DT175B, DT175C, DT250B, DT400B, Z50, SCR950

Someday, you'll own some Yamahas
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Last edit: 19 Jan 2024 18:13 by MarkT. Reason: added link
19 Jan 2024 17:56 #1

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Replied by Sneezles61 on topic AT1 expansion chamber

Photos show a nice looking pipe for that money…
Sneezles61
19 Jan 2024 20:02 #2

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Replied by Schu on topic AT1 expansion chamber

Less than an hour and no bids???
Schu

CT1B, CT1C, JT1, JT2, DT360A, GT80B, DT100B, DT125B,
DT175B, DT175C, DT250B, DT400B, Z50, SCR950

Someday, you'll own some Yamahas
25 Jan 2024 17:26 #3

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Replied by Sneezles61 on topic AT1 expansion chamber

Maybe it’s too specific?
Sneezles61
26 Jan 2024 06:07 #4

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Replied by Gr8uncleal on topic AT1 expansion chamber

Yes, rare item, but equally small market. 
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26 Jan 2024 07:08 #5

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Replied by MarkT on topic AT1 expansion chamber

Pretty sure the AT1 and CT1 aftermarket pipes were the same. 

I have a few different aftermarket pipes.  They sure run good.  I'm not sure any have a spark arrester which is required most places off road here.  If I ran exclusively on the street or if they didn't check I'd use them more. 
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
26 Jan 2024 07:37 #6

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Replied by Schu on topic AT1 expansion chamber

Yes, Enduronut said the same thing about the AT1 and CT1 being the same. I reached out to the seller and offered $100 and said I would come pick it up to save them the hassles of shipping, but they declined. It will be back on the auction block soon, if not already.
Schu

CT1B, CT1C, JT1, JT2, DT360A, GT80B, DT100B, DT125B,
DT175B, DT175C, DT250B, DT400B, Z50, SCR950

Someday, you'll own some Yamahas
26 Jan 2024 09:27 #7

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Replied by DVM on topic AT1 expansion chamber

You might contact Rick C or Brown Shoe (Scott). They came down and cleaned out my garage and among all the items were two CT/AT expansion chambers.
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26 Jan 2024 10:27 #8

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Replied by Rick C. on topic AT1 expansion chamber

Hate to hijack the thread here, Bill.
But I will probably be using one of the pipes on my newly acquired ( some have called it a boat anchor )
AHEM ... bike.  
Shoe ( Scott ) and I took a tour to the Long Beach Motorcycle Swap Meet on Sunday.
I made sure NOT to bring way too much money , $83 to be exact so I wouldn't go crazy and pick up something I really do not have room for. My buddy Johnny had a spot to sell some of his parts, so after spending a total of a whooping $ 34, we went back to see how Johnny was doing .Had a beer and milled around.
The guy in the next booth came over and said, " someone over in the next aisle had an AT for sale now for $20 bucks and we should go check it out!
Well I walk passed it earlier , chuckled and shook my head and promptly left the area.
Now Scott and I went over to take a look once more, sure enough..hand written on the tank was $20.
Scott and I agreed that there was only 2 usable part on it. Yet we stayed for about 8 minutes mumbling back and forth. 
The owner came over and said, " for you guys, Take it , it's for free ! I don't wanna load it or see it again !!
It's FREE ....get it outta my sight ! "
O.K I said, came home and checked the VIN #
a 1973 ATMX. numbers matching.
So I will need one of the pipes.
 
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Last edit: 29 Jan 2024 13:13 by Rick C..
29 Jan 2024 13:11 #9

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Replied by Schu on topic AT1 expansion chamber

Good for you. Great story. I posted the original link thinking someone on the forum would grab it, but nobody did. I don’t have an AT, so I didn’t need the pipe. But I threw an offer at it simply because good never used pipes are getting very hard to find and are rarely under $200 and often closer to $500. It didn’t sell and they will put it up for bid again soon.
Schu

CT1B, CT1C, JT1, JT2, DT360A, GT80B, DT100B, DT125B,
DT175B, DT175C, DT250B, DT400B, Z50, SCR950

Someday, you'll own some Yamahas
The following user(s) Liked this Post: Rick C.
29 Jan 2024 13:32 #10

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