Talk to a performance expert
mon-thurs 9-5 cst
The well-known, world leader in small engine racing carburetors, Tillotson LTD, has produced their version of the common GX200 carburetor. Tillotson recognized the need to produce a consistent carburetor for the USA clone racing engines. The engineers took the 196cc OHV lawn and garden carburetor and calibrated (Blue-Printed) it for the racing market. The PK-1B carburetor is legal for AKRA, NKA, and many other racing divisions.
The improvements over the PK-1A are primarily casting to the liking of the rule committees for approval while improving flow to equal or exceed the best quality Ruixing and Huayi Carburetors. This carburetor is the closest out-of-the-box setup that meets the performance of most blueprinted carburetors. To make the most of this design, we built it to handle larger bores than the average stock carburetor. This is the preferred carb body for the best stock appearing carburetors.
The key standard features:- The venturi is machined to .613" plus or minus .001" very close to the .615" no-go rule. Additional boring is not needed.- The throttle shaft alignment is made to the centerline of the bore.- The emulsion tube is of a 24 hole progressive design- Main jet size .039."- Low side jet .028."
The jetting above is a general starting point for all different racing types; this combination was based on a stock rule clone using CL-1 camshaft, turning a max RPM of 6,100 with 10.8 springs.
If you have a current 2019 built AKRA stock clone engine with a ported head, CL-3 type camshaft 10.8 spring, 32-degree flywheel advance, and your turning about 7,000 RPM or more, you may find using a .032" to a .035" low side jet and .034 to .037 main jet. Caution: Using this combination, your idle may be rough, and there is a chance of loading up if it idles for too long
Minibike racers, we recommend trying the carburetor as is; if idle is too rough, you may need to purchase a .020-.024" low side jet.
This is considered a racing product, and there is no warranty or returns.
Returns- Returns must be communicated by customers within 7 days of delivery and sent back within 30 days to receive a refund. No returns without authorization will be accepted. All returns must be accompanied by a copy of the receipt and a note. All items must be returned complete and in new condition.
All returns are subjected to 20% processing and restocking charge after the product has been inspected. The shipping cost will not be refunded.
Refunds will be made back to the same method of payment when ordering those parts. We will not refund a different method of payment.
Non-returnable Items Include- Close Outs and Clearance Items, Special Orders, Custom Orders, Used Parts, and Cut to Length Items. (Other items may apply)
Shipping: All orders are shipped UPS Ground, UPS Surepost or USPS Priority when ordering online. Shipping charges are calculated based on weight, size, and quantity of boxes in addition to processing and handling including insurance. All shipping charges are the customer's responsibility (even if charges online are not the same as emailed or phone orders).
All standard shipping orders will be shipped within a day or two on weekdays. Orders placed on the weekend (Fri-Sun) will be shipped Monday or Tuesday or the first weekday after a holiday. Custom or Handbuilt Products may require more time to be built before shipping. For any reason, an order may be delayed or prevented you will be contacted through phone and/or email.
Express/2nd Day/Next Day Shipments: Express orders must be made by phone orders only! Orders placed after 12:00 p.m. CST. will be processed the Next Business Day. UPS will only guarantee next day shipment. If you choose 2nd-day shipments expecting it before the weekend, UPS does not guarantee its arrival
Additional Fees: Double Check that the address you gave is correct. You may be charged additional fees to redirect your package to the correct address.
PO Boxes: We can ship to PO Boxes using USPS. However, UPS will only accept shipments to a valid street address. They do not deliver to P.O. Boxes.
International Shipping: International buyers are responsible for paying duties, taxes, and applicable customs brokerage fees separate from the merchandise cost. Buyers will generally pay these fees upon receipt of your shipment. Buyers may be charged additional fees once they receive the package. Read our international policy here.
Paypal: All orders paid by a verified PayPal account will be shipped to the address on the Paypal account to comply with Paypal's policy. No Exceptions.
UPS Estimated Shipping Lead Times
USPS Estimated Shipping Lead Times