Torque. Control. Simplicity. The BILLETRON HD-X Series is purpose-built for Harley Davidson and similar large-displacement engines, delivering strong low-end torque, clean throttle response, and minimal tuning. The HD-X supports up to 96ci engines, while the HD-X+ is optimized for high-output builds up to 124ci with a custom larger bore for increased airflow. With three precision fuel circuits — the externally adjustable Idle Fuel Control, Xcelerator™ Metering Rod, and Power Pet — this carburetor gives you total control over fuel delivery while remaining incredibly easy to set up and ride.

Features:

• Increased CFM across throttle positions resulting in increased torque and horsepower availability compared to competitors
• Increased throttle response - Peak torque availability at lower RPM ranges
• Faster power jet activation – Gains in CFM now signals activation earlier increasing performance and top end tunability
• Improved Idle - Centralized and focused air flow to the fuel signal creating improved idle consistency
• Increased Tunability - Finer adjustments and ease of access allows for easy on the track fine tuning
• ISO Certified precision machining paired with billet aluminum construction for unbeatable product consistency and performance
• HDX For 54-96CI Engines
• HDX+ For 96-124CI Engines
• Throttle cables by Barnett specifically for Lectron Harley carb applications.
• This is NOT compatible with an S&S Stealth Air Cleaner System right now.