USA-OKO
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Welcome to USA-OKO, the home of OKO D-Slide, PWK carburetors. We have carburetor kits for many motorcycles, and can build kits for other models as well. See what we have to offer below and contact us with any questions. Customer service is our number one goal, and we work with riders and tuners to help get the maximum performance for each application. Need help deciding what carburetor will work best for you? Call us: 410-635-6722 (Shop Phone) or 443-821-6154 (Cell) or you can email us at USAOKO@Comcast.net.
Sizes 21mm to 30mm come with either a straight top with an adjuster or with a curved top. Bowl choices are metal or clear plastic. They come in black or metallic. For all sizes the spigot for mounting in the manifold has a 35mm OD and a 50mm intake OD. The spigot can be sleeved to 40mm when needed.
Sizes are 32mm to 40mm. These only come in metallic and with a straight top with adjuster and only a metal bowl. Intake OD is 62mm and spigot OD varies according to size. Click on above photos to see larger images.
We have ready made kits for various on and off road motorcycles. These come with all you need to swap to an OKO, including any manifold adapters and/or air box sleeves. Click on the brand name to see what models we have kits for. If a kit is not available for your model, let us know what you have and we can build you a custom kit.
Listed here are all parts for the K-101 Series (21-30mms)
Contact us for K-104 Series (32-40mms) Parts and Prices
OKO Parts
What Happens Once We Receive Your Order?
When we receive your order, we take the correct size carburetor from the shelf. It is disassembled to select and position the needle, and select the pilot and main jets for the application. Float level is set at that time. We then gather any adapters and airbox sleeves needed and package your order for shipping. If your order is received before about 3PM it is shipped that day. We typically ship with USPS and use Ground Advantage unless you select Priority Shipping from the "Parts Shipping" above. It is then shipped via Priority Mail. We ship daily from our New Windsor, MD post office.
We offer a 90 day warranty on all carburetors. If the carburetor cannot be dialed in due to a defect in the carburetor, simply return it within 90 days of the purchase date and we will repair or replace it, at our discretion, and ship it back to you at no cost. You need only to pay to ship it to us. If we have not included the correct jets or needle (unless they were your selection) we will work with you on an exchange basis. Send us the needle or jet(s) that are not correct and we will send you replacements as per your request, again at no extra cost to you. We will work with you as much as possible to get your OKO properly dialed in. If there are no issues with the carburetor and you have just changed your mind about using it, you can return it within two weeks of receiving it for a refund. We do require a restocking fee of $20 for US sales, $30 for Canada sales, and $40 for other international destinations. This allows us to recoup shipping costs and PayPal fees. Consider that there is some mechanical and tuning ability required for proper installation and set-up. You can call Roger at either 410-635-6722, or 443-821-6154 (cell) or text or email usaoko@comcast.net with any tuning or other questions. We will assist you as much as possible with any issues. We include a Tuning Guide with each order. It is also available to download from the button at the top of the page. We encourage you to follow the guide first, and then call if needed.
Build your 21mm to 30mm Carburetor Here
Build your 32mm to 40mm Carburetor Here
Please Note: All orders under $20 require a $5 Shipping Fee That you Add Manually using the drop-down box to the left.
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