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 or 443-821-6154(ask for Roger) with any questions.  Our goal is your complete satisfaction with any and all 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
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
Main Jet Wanted
Slow Jet Wanted and Needle
Shipping Destination
Carburetor size
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 here.  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.)
Do You Need a Curved Top?

Carburetors come with the straight top. If you need a curved one you can add it here.
K-101 Dimensions:  All sizes from 19-30mm are the same
Intake 49mm   Spigot 34mm   Height 131mm   Length 83mm   Width 65mm
Curved Top
Clear Bowl
.
Custom Carburetor
We carry a limited supply of black carburetors.  If desired, contact us for availability
What Happens Once I Place My Order?
Once we receive your order, we pull a new carburetor off the shelf and disassemble it so we can check and set the float level, install the proper jets and needle, make sure all fuel circuits are working properly and see that the  float needle is sealing as it should.  We then gather the needed adapters for that particular application, print out to include, a Tuning Guide and box everything for shipment.  Overnight orders are shipped the following day.  Orders received by 2:00PM Eastern time usually ship the same day.  All domestic shipments of carburetors ship via USPS Priority Mail and generally take one to three days to arrive.  Domestic parts orders under a pound ship via USPS First Class Package.  Unless otherwise requested, all international orders ship via First Class Package, taking ten to fourteen days to arrive at the farthest locations, such as Australia and New Zealand.  Contact us if you prefer a different mode of shipping and we will quote you a price.

You can contact us via e-mail at usaoko@comcast.net, via text at 443-821-6154, via phone call, 443-821-6154 days and 410-635-6722 evenings (ask for Roger), or you can use the text box below.  We understand that you may have many questions, and we put customer service first.  We will work with you as needed from ordering to getting the OKO properly dialed in.
Use the text box to the right for your inquiries.
Put your email adress or phone number in the text box so we can reply to you.


Please note:  Having difficulty with this button.  Use alternative method for inquiry if needed.

Within the first three months, if there is a problem with your carburetor you may return it to us for either repair or replacement, at our discretion.  You will just have to pay postage to ship it to us.  Once repaired or replaced we will ship it back to you and we will pay for shipping.  If there is no problem with the carburetor, but you have changed your mind about keeping the carburetor, you can ship it back to us within two weeks of receiving it.  There is a $20.00 restocking fee so we can recoup Paypal and shipping costs.  So you will receive your initial payment minus $20.00.  Some mechanical ability is needed for installation and set-up.  Please consider this before ordering.  
Our Return Policy