OKO Kits for Suzukis: RL 250 & Beamish 325, PE 175, DR200
Suzuki RL 250 & Beamish 325
The Suzuki RL250 was never jetted quite right from the factory, and with age, many of the flange mounted Mikunis warped at the flange, which could make the slide stick when full open. The OKO kit contains a 26mm carburetor jetted for the RL250, a new rubber flange adapter, extra jets and a sleeve for the air box hose. It provides better throttle response and more power, especially noticeable in the low and mid-ranges. Our test bike had a heat block behind the adapter. If you have one you can use it or not since the adapter acts like a heat block as well. Sorry, no photos of the Beamish 325.
Suzuki PE175
The Suzuki PE 175 kit provides a 30mm OKO carburetor, extra jets for fine tuning, a new manifold sleeve and a sleeve for the air box hoe which will need to be cut back about half an inch. This kit will give the PE much better low and mid-range punch.
Suzuki DR200
The Suzuki DR200 kit is a bit more complicated than most of our kits, and the changes needed may be more than some want to deal with. For those who do, this kit will wake up the DR200 with better power and throttle response. The stock CV carburetor was a known poor performer. We use a 24mm OKO. It gave us the best performance.
The petcock should be changed to a non-vacuum type. The throttle cable needs to have a smaller end for the carburetor slide, and only needs a "pull" cable. We used the Suzuki's outer cable, but inserted a different inner cable that has a small ferule that fits into the slide. If you get this kit, we are happy to help you get it properly installed. We supply an airbox hose, but we send it a little long, so it will need to be cut some. As seen in the photos it is a short piece that needs to be cut on an angle. We had one DR owner tell us the airbox can be moved about some to help instal it. We offer a cable with the DR kit that will simplify installation.
