1 GU restricted or not?

[urabus]

Hi everybvody,

Yesterday i have buy a second RD125LC 10W with a lot of parts ( fairings, wheels, engine parts, exhaust, carb, meters, wiring, new oem parts.... ) for only 200€! a really nice deal because engine has a rebored barrels, new Prox piston ( 57.25mm ), new TKJR conrod with new crank bearings

i have receive an 1Gu exhaust in excellent condition ( no rust and dent ) with ref 1GU xxxxxxxxx stamp on can and chamber. I would like to know if it's a restricted version or not.

Also, if it's ok for a 10W engine?

Thx

Marco

[rob99]

1gu exhaust has a restricter plate in the the end chamber with two little pipes in it

[urabus]

thx. are you sure it's a restricter? in 1 GX you have a real restrictor before this 2 pipes. ( i have one cutted in all spares i recived )

[urabus]

Correct ref is 1GU-14711-00. It's from Switzerland RDLC

[urabus]

seems to be restricted. i have check with my endoscope cam

[rob99]

Ive taken one out for a friend and rewelded it up it certainly looks like a restricter

[museumman]

1GU is restricted for noise, the bikes were 15.5KW. You gain about 500RPM by removing the inward facing nozzle between the baffle can and main pipe. The baffle is also crimped at the beginning, this section can be cut off or drilled out.
1GU pipes is heavier due to thicker steel, the 10W's used to fail with a small hole underneath.

Here's mine on a 10W.  it runs pretty much the same.

[urabus]

Great, thx for this info.

Nice bike