USA-OKO

Welcome to USA-OKO.  We are an authorized US distributor for the OKO factory in Taiwan, and are located in New Windsor, Maryland.  We keep an inventory of all sizes of OKO D slide carburetors, from 19mm to 38mm, as well as a complete stock of spare parts, and we ship within 24 hours of receiving orders.   Shipping cost is included in all carburetor orders.  Just select the shipping destination.  All parts orders within the US over $20.00 ship for free, and under $20.00 are $5.00.  We will contact international parts buyers via email with shipping costs. All payments are made through Paypal.  If you do not have a Paypal account, they allow you to pay with a credit card.  Please contact us at usaoko@comcast.net, or call us at 410-635-6722 (ask for Roger) with any questions.  Our goal is your complete satisfaction with OKO products.


Many Chinese companies are now copying the OKOs and marketing them as genuine.  Though these copies look practically identical, the internal drillings are often not right, making them impossible to tune.  Many are available on Ebay, as well as through organizations marketing Chinese products, such as Alibaba.  The best way to determine a genuine OKO from a copy is by the packaging.  All genuine OKOs come in packages with the Taiwan flag on the box.  The copies coming from China will have a white rectangle where the flag should be, denoting the carburetor size.  Buyers be warned that often genuine parts do not fit the copies, making many of them impossible to fix.
Click on the small photos for the large size photo.
Chinese  Copies Hurting the OKO Reputation
If you can't find the information you are looking for here, try our sister site:
K-103  Angled Top
K-102  Clear Bowl
K-101 Standard


If you know the size carburetor you want, you can order either the basic or deluxe carburetor.  The deluxe comes with four extra jets, one leaner and one richer for both slow and main jets.    The basic comes as it comes from the factory unless you specify the jetting you want.  Deluxe carburetor jets can be exchanged for different jets at any time at no cost to buyers within the US.  See the options to the right and select the shipping destination which will determine the price as well.  Please note that the 24mm comes with the power jet, all others without.  We sometimes have other sizes in stock with the power jet, but they may have to be special ordered.
Ordering a Basic  or Deluxe 19mm  to 30mm  OKO
Shipping Destination
Carburetor size
Type of Top
Main Jet Wanted
Slow Jet Wanted and Needle
Shipping Destination
Carburetor size
Type of Top
3 Main Jets
3 Slow Jets, Needle
Basic Carburetor
Deluxe Carburetor
Shipping Destination
Size of Carburetor
Main Jet Wanted
Slow Jet and Needle
Shipping Destination
Size of Carburetor
3 Main Jets Wanted
3 Slow Jets and Needle
Ordering a Basic  or Deluxe 32mm to 38mm OKO

If you know the size carburetor you want, you can order either the basic or deluxe carburetor.  The deluxe comes with four extra jets for fine tuning.  The basic comes as it comes from the factory unless you specify the jetting you want.  Deluxe carburetor jets can be exchanged for different jets at any time at no cost to buyers within the US.  See the options to the right and select the shipping destination which will determine the price as well.  Please note that the larger, K-104 series does not have the option of a curved top, nor do they have the power jet.  Due to the already quick response of these D slides, we have not seen the need for the power jet.
Basic Carburetor
Deluxe Carburetor
Clear Bowl Options

If you would like a Clear Bowl for your 19mm to 30mm
Carburetor you can select an option here.

Below you will find link buttons to various OKO Carburetor Kits we have developed for various motorcycles.  You can use these to see what kits are available.

If we don't offer a kit for your motorcyle, pit bike or scooter, you can order a carburetor for it below.  Just tell us the motor you have, its cc's, and modifications done to the motor, intake, and/or exhaust.  Based on the bike's application and modifications, we will jet a carburetor for you and provide extra jets for fine tuning.  We will work with you to get it properly dialed in, exchanging jets and even carburetor size if needed, at no extra cost to you.
Select Shipping Destination
Select Size if Known
Select Jetting
Engine, cc's and Modifications
Jets and Needle Wanted
If you don't know the size carburetor you need or the jetting, give us as much information about your engine as possible. 
(Example: Honda GY6, 160cc, ported head, large valves,  aftermarket exhaust.)