HD-X Upgrade Package with Chrome-Plate Slide & Xcelerator Rod | BILLETRON HD300 Carbs 1990-2025-ktm-85-esr9885316 Includes throttle cable only—carb top

Includes throttle cable only—carb top cap and throttle housing sold separately

each kit is built-to-order using components from our proven product lines

4x Float Bowl Screws

Compatible with all Legacy and H-Series models

and easier installation without the complexity

HD-X Upgrade Package with Chrome-Plate Slide & Xcelerator Rod | BILLETRON HD300 Carbs 1990-2025-ktm-85-esr9885316 Includes throttle cable only—carb topThis upgrade package brings your BILLETRON HD300 carburetor up to HD X specifications. It includes a chrome plated brass slide for smoother throttle operation and increased durability, along with the Xcelerator metering rod for improved fuel response and acceleration across the throttle range. The chrome plated slide resists wear and reduces friction under high load conditions, while the Xcelerator rod delivers a more refined fuel curveenhancing both