Add Regen Braking: The Nucular Thumb Throttle / Regen Lever

A great controller deserves great controls. The Nucular Universal Thumb Throttle / Regen Lever is how you actually access two of the best features of a Nucular build: smooth throttle control and regenerative braking. If you run a Nucular controller, this is the control combo that completes it.

Throttle and regen in one clean unit

The thumb throttle gives you precise, ergonomic control of power delivery, while the regen lever lets you engage regenerative braking on demand. Together they turn the P24F's capabilities into something you can actually feel and use on every ride.

Why regen braking is worth it

• Recover energy — feed power back to the battery as you slow down.
• Controlled engine-braking feel — smooth, predictable deceleration on descents.
• Less wear on your friction brakes — regen shoulders some of the load.
• More control — modulate speed with your thumb without always grabbing the brakes.

Ergonomics and compatibility

The thumb throttle layout keeps your hand relaxed and your inputs precise, and the unit is designed to work with the Nucular ecosystem — pair it with a Nucular P24F controller to unlock its full functionality.

Complete your Nucular build. Shop the Nucular throttle. Questions on compatibility? Email sales@hpcbikes.com or call (818) 734-1600.