Idle Circuit Screw Kit | Compatible with PRO-SERIES & BILLETRON Products 1970-1990-bultaco-pursang-esr3756445 Recommended for use with H-SERIES

Recommended for use with H-SERIES and Legacy Series Lectron carburetors

These are designed to be wear items so the aluminum bodies of the carbs have a much longer operating life than a traditional carburetor with a hardened or coated slide

and custom builds

Rep the brand that rewrote the rules on carburetion

Built from heat- and fuel-resistant materials to withstand real-world riding conditions

Idle Circuit Screw Kit | Compatible with PRO-SERIES & BILLETRON Products 1970-1990-bultaco-pursang-esr3756445 Recommended for use with H-SERIESCompatible with PRO SERIES & BILLETRON Products Fine tune your idle with precision. This Idle Circuit Screw is a direct replacement for PRO SERIES and BILLETRON carburetors equipped with externally adjustable idle circuits. Machined for smooth threading and consistent control, it allows quick adjustments to idle fuel deliveryideal for dialing in cold starts, low speed stability, and off throttle transition. Whether youre replacing a worn screw or