HD-X Upgrade Package with Chrome-Plate Slide & Xcelerator Rod | BILLETRON HD300 Carbs 1990-2025-ktm-85-esr9885316 Designed for aggressive ATV riders

Designed for aggressive ATV riders who demand precision and durability

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

With three precision fuel circuits — the externally adjustable Idle Fuel Control

✅ Improves low-speed control and snap-on power delivery

4x Float Bowl Screws

HD-X Upgrade Package with Chrome-Plate Slide & Xcelerator Rod | BILLETRON HD300 Carbs 1990-2025-ktm-85-esr9885316 Designed for aggressive ATV ridersThis 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