BILLETRON HDX / HDX+ CHOKE CABLE

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.

Who It’s For:

Street riders and builders who want bolt-on power, smooth control, and zero jetting hassle — whether you’re cruising a stock 96ci or pushing a 124ci big-bore build.

The HD-X kits include:

1. Harley Carb with our Gen II idle circuit.
2. 33" Barnett Throttle Cable to fit Harley style throttles
3. 3 Bolt Air Filter Adapter (Universal bolt patterns)
4. 2 Bolt Manifold adapter (will also fit stock manifolds)
5. Metering Rod Adjustment Tool
6. (6) Stainless Steel shims for air cleaner

HDX Performance Improvements:

• 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.

• 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.