Nucular Ergonomic Thumb Throttle

A next-generation ergonomic thumb throttle for e-bikes, engineered to fix what stock throttles get wrong: motorcycle-style twist throttles that risk involuntary "panic twisting," classic thumb throttles that fatigue your wrist and fingers on long rides, and handlebar vibration that gets transmitted straight into the lever and hurts control precision. An integrated top support gives your thumb a secure resting point through the full range of lever travel, while the housing is shaped to cradle your palm for a natural, fatigue-reducing grip. It mounts alongside your existing brake levers without limiting their range of motion, and delivers a linear response across the entire throttle travel. It can also be configured as a regen brake lever. Each unit ships with two interchangeable thumb levers — the standard lever plus an extended one for winter gloves or smaller hands. Note: for full thumb throttle functionality, a Nucular controller (or any controller with adjustable throttle thresholds) is recommended — without automatic or manual threshold calibration, functionality may be limited. Output voltage 0.5 – 4.5 V Supply voltage 5 V Connection 3 wires ("+", "-", signal) Connector PHD 2.0 4P (Nucular standard) Handlebar diameter 0.86 in (22.2 mm) Max grip diameter 1.33 in (34 mm) Mode Throttle or regen brake Wire length 19.7 in (50 cm) Weight 2.57 oz (73 g)