The sleeper pipe on this bike would be the ultimate upgrade. The chamber is really overly wide, so it is a bit uncomfortable to ride with it - however, it Kics Butt with the better exhaust. If you build a true sleeper pipe then you will get the performance as well as the riding comfort, and of course, the correct "look".

If you are building that yourself, please start up a thread and document your work. Lots of folks will be interested!

Alas tis not my handy work. Handed it to Dave and Don at the Boron ride last weekend. Should be ready for the land speed attempts at El Mirage dry lake bed this weekend. I'm not competing. Just watching and putting around.
Your bike is looking real nice.

Give them a call and tell them to document the build and post it up :P

Seriously, I suspect there are a lot of other folks who would be interested!

What a great story! The similarities are too vaste here though Mako. :ohmy:
The first bike that I got my permit with in the same year, 1974, (the day I turned 15 1/2) was a yellow AT1 exactly like that, that I bought from an older neighbor. It was the first bike I snuck on the open highway, as well. That poor little thing made a zillion store runs.
I also later converted it to a 175 from a parts bike CT1 that I got for free. The downside was my electric start never worked and after a while, the battery would quit charging. Being young and broke, I converted it to the flywheel mag setup off the CT1 and never looked back.
The power difference between the 125 and 175 was obvious. My old Yamaha dealer back then told me that the 125 with the electric start and milder power characteristics was really made to be a "wife's bike". Not sure how true that was....
I finally stripped it with some mild porting and a Bassani pipe in 1976 for strictly "motocross" use when I got a Honda CB 350 for the street.
Great memories indeed! Thanks for sharing!

I'll Give it a shot.

They may not want to give away trade secrets.

Not looking for any secrets! Just be nice to have some info on what they do, like I recall seeing on another website . . .

It would probably help promote their business!

We have a lot of new folks from all over the world signing up. Could be to their benefit.

Just to keep you all on your toes, I will be adding some neat bike . . . The Rest of the Story on this motorcycle soon. Suffice it to say here is the list of upgrades sitting on the bench awaiting installation on the bike which is on the operating table in my garage:

New Sleeper Pipe thanks to Meis and DVM - gorgeous piece that will look completely stock

New PowerDynamo CDI Ignition





New Kick Stand (lengthened for larger tires)

New Aluminum Air Cleaner thanks to At1Guy

Custom Clutch Activator Arm and possibly custom activator cover

Some LED lighting upgrades.

Stay tuned for Film at 11 over the next week or so.

Very nice project !! I can't wait to see it finished !!

Very cool project....... I am anxious to hear how the "Sleeper Pipe" works for you ?