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After you place your order on this site, we will contact you to confirm your order details prior to payment being made. All orders will be processed and fulfilled by one of our authorised dealers. Rollies Speed Shop Distribution is a wholesale business and does not sell directly to the general public. For more info see the Purchasing Information page.
ThunderJet™ is a jet-able, externally mounted third fuel circuit that improves the performance of 2-circuit carbs such as the S&S Super. Unmodified, these carbs typically have a low speed, or intermediate, circuit that supplies fuel from idle to approximately 2500 rpm, at which point the carbs’ main jet circuit becomes active, delivering more fuel to the engine. These two circuits must then supply fuel for the rest of the rpm range. The problem is: the remaining rpm range is too wide (typically 2500-6500 rpm) for only 2 circuits to handle efficiently.
MFR PART No: Z113-036
ROLLIES PART No: Z113-036
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