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Makotosun

SLEEPER PIPES FOR YAMAHA ENDUROS

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Replied by Jamey on topic SLEEPER PIPES FOR YAMAHA ENDUROS

I really need a pipe for a 77 DT400. Can you make me one?
07 Apr 2021 10:34 #221

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Replied by on topic SLEEPER PIPES FOR YAMAHA ENDUROS

Sorry we don"t offer one for that bike.

 
Last edit: 28 Sep 2021 10:55 by .
28 Sep 2021 10:54 #222

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Replied by on topic SLEEPER PIPES FOR YAMAHA ENDUROS

We are accepting new orders for Sleeper Pipes !

Turnaround time is approx. 2 weeks once we receive your pipe.

Below is our current price list

1969-1973 CT175 $199. usd
1969-1973 DT250/RT360 $239.
1974 DT250/DT360 $249
1975-1976 DT250/DT400 $249.

You can message me here or email me at This email address is being protected from spambots. You need JavaScript enabled to view it.

Thanks everyone for your continued support !
28 Sep 2021 10:56 #223

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Replied by Pedalcrazy on topic SLEEPER PIPES FOR YAMAHA ENDUROS

I asked the same question as I have a 78 DT400E. After getting the bike all rebuilt and testing for the first time I think the original pipe is pretty darn good! Maybe that’s why no sleeper? Already well functioning.
1978 DT400E
1976 DT400C
1973 RT3
1971 RT1B
1968 DT1 (3)
Last edit: 28 Sep 2021 16:01 by Pedalcrazy.
28 Sep 2021 16:00 #224

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Replied by Burlybilt on topic SLEEPER PIPES FOR YAMAHA ENDUROS

Interesting you would ask.
Back in the day (70's) in fabricated numerous custom pipes for 2 strokes- expansion chambers for racing.
I wouldn't feel comfortable trying to duplicate an OEM pipe or without having the bike here to get a good fit.
Dave
05 Oct 2021 11:39 #225

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Replied by Pedalcrazy on topic SLEEPER PIPES FOR YAMAHA ENDUROS

Burlybilt…I’m not sure I understand your comment…Meis converts OEM pipes to sleeper pipes by opening them up and working on the inside. They bolt back on the bike just like Yamaha intended. I totally agree that a pipe for a bike can’t be built from scratch without the bike there.
1978 DT400E
1976 DT400C
1973 RT3
1971 RT1B
1968 DT1 (3)
Last edit: 05 Oct 2021 18:51 by Pedalcrazy.
05 Oct 2021 11:48 #226

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Replied by Burlybilt on topic SLEEPER PIPES FOR YAMAHA ENDUROS

So are they quieter, louder, etc.???
My original post was commenting on the loudness of the original OEM pipe on a 70' DT1 I just found/bought.
Appears to have a complete 2 part baffle/arrestor in the pipe, but dang, is it loud...
Thanks Dave
05 Oct 2021 12:00 #227

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Replied by Pedalcrazy on topic SLEEPER PIPES FOR YAMAHA ENDUROS

Meis did a sleeper pipe for my 76 DT400C and it is only slightly louder. I mean very slightly. But the power improvement was much more noticeable.

Also as I commented both my RT1 and RT3 are louder than the DT400C which has the sleeper pipe.
1978 DT400E
1976 DT400C
1973 RT3
1971 RT1B
1968 DT1 (3)
The following user(s) Liked this Post: Rick C.
Last edit: 05 Oct 2021 12:38 by Pedalcrazy.
05 Oct 2021 12:36 #228

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Replied by adguy2112 on topic SLEEPER PIPES FOR YAMAHA ENDUROS

I've been wondering myself if there are good ways to quiet a pipe down from one of these earlier stock pipes. I've seen packing at cycle gear and wondered if wrapping the outside of the silencer end where the side holes are located would help or just kill the performance too much.
05 Oct 2021 13:22 #229

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Replied by DVM on topic SLEEPER PIPES FOR YAMAHA ENDUROS

Dave (dtmeis) and I have completed over one hundred sleeper pipes for Yamaha CT's, DT's 250 and 360, and DT400's. Most end up just a little louder than stock and a few end up with more of a "pop" that is just the way it happens. Our procedure for making the sleeper pipes does not change. That's just the way some pipes turnout.
The following user(s) Liked this Post: Rick C., MarkT, t-bone
05 Oct 2021 15:32 #230

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