As low as $4.45/mo with or . (Pay in 4 interest-free payments)
Motion Pro Throttle By Wire Extension Upgrade or extend your Harley‑Davidson throttle system with the Motion Pro Throttle By Wire Extension . This precision-built 46-inch harness is engineered for Throttle By Wire HD models to simplify bar swaps, custom builds, and repairs—no cutting, soldering, or crimping required. Key Features Direct-fit replacement: Compatible with Harley‑Davidson Throttle By Wire systems for seamless integration. Install-friendly design: Lower connector body shipped off for easy routing through handlebars and tight passages. Pre-terminated harness: No tools or splicing—route, plug into the factory connector, and ride. Optimal 46" length: Supports taller bars, wider setups and custom configurations while allowing tidy concealment. Neat finish: Excess length can be hidden inside the handlebar or behind body panels for a factory look. Benefits Maintain reliable throttle response and OEM-level performance Reduce installation time on custom and replacement projects Preserve factory wiring integrity—no permanent modifications Who It's For Riders upgrading to taller or wider handlebars Custom builders and restorers seeking clean wiring solutions Technicians replacing damaged throttle-by-wire harnesses Trust Motion Pro for durable, user-friendly motorcycle components. The Throttle By Wire Extension delivers dependable operation and a clean, professional finish for your Harley‑Davidson build or repair.
Replacement electrical harness for HD models that use the Throttle by Wire system
Lower connector body is not installed, to facilitate routing the harness through the handlebar during installation
All wires are finished with the proper terminals, just plug into connector after harness is installed in handlebar, no soldering or crimping is necessary
Harness length is 46"
Excess length can be hidden inside handlebar, or behind a body panel if necessary