LTWOO eR9 Electronic Road Groupset
The LTWOO eR9 is an electronic road groupset designed for riders who want the benefits of electronic shifting without moving into the highest price brackets of more established drivetrain brands.
Built for performance road bikes, the eR9 combines electronic gear changes with hydraulic disc braking, giving riders a cleaner cockpit, more consistent shifting and confident braking control. It is best suited to road, endurance and all-road builds where riders want modern technology, good usability and strong value.
The eR9 is a practical option for riders who want to experience electronic shifting on a modern road bike, while keeping the overall build cost sensible.
Rear Derailleur
The eR9 rear derailleur handles electronic shifting across the cassette and is designed for road-focused gearing. It provides quick, repeatable shifts without relying on traditional gear cable tension.
The rear derailleur is best suited to road cassette ranges, making it a good fit for endurance, club and performance road builds. As with any drivetrain, cassette size, chain length and derailleur capacity should be checked before fitting.