At a mere 55 grams, and 70mm long, it’s far lighter and more compact than its predecessors. Quantum has enough cable stroke and power for any front or rear derailleur. We designed Quantum to be simple and reliable. Moving parts are a minimum. Our ingenious contactless position system is accurate to better than 10 microns. Intelligent, adaptive motor control means it will stop at the correct position, no matter what the cable load is, no matter what derailleur you have. We use a low voltage system that eliminates the need for multiple cell battery pack, and the complications that brings. It is fully programmable from 2 to 32 speeds. It’s incredibly small size and weight allows it to be connected directly to the cable port of any derailleur. We offer a wide range of adapters. Or, contact us for OEM and custom requirements. The mini size power pack has enough charge for a minimum of 5,000 shifts. We designed this system for cycling, not to be parked on your desk. The charger is also micro sized. Easily carry a spare battery and the charger in your jersey pocket. USB-C charging port ensures a reliable connection.