KEY FACTS

Intelligent automatic transmission with 8 gears
Suitable for e-bikes and non-e-bikes
419% transmission ratio and optimal gear spacing
One of the lightest electric hub gears
No cables, no Bowden cables, no charging
Thru axle compatible
No complicated adapter solutions
Compatible with 6-hole brake discs
Maintenance-free with lifetime lubrication
Belt compatible
Easy service

Innovation

AUTOMATIC

The intelligent automatic transmission takes your driving experience to a whole new level!

The new HUB A8 shifts gears fully automatically and selects the perfect gear based on various sensor values. Simply select your desired cadence in the REVOLUTE app and the intelligent electronics of the HUB A8 will take care of the rest. Sporty riders can optionally use the REVOLUTE wireless trigger. This allows you to choose between automatic, manual, or individual modes. In individual mode, a wide range of parameters and features can be adjusted to suit your personal preferences. The system can therefore operate completely independently of the electric drive.

WIRELESS

The HUB A8 switches completely electronically, WITHOUT cables and WITHOUT charging!

The electronic circuit does not require an external power supply, e.g. from the e-bike battery. There is also no need to charge a battery regularly. The HUB A8 uses a tiny fraction of the hub's kinetic energy. Thanks to intelligent control and various sensors, the hub can decide for itself when is the best time to charge the internal battery, for example when braking. This means that no cables or connections are required. The one-time configuration upon purchase is carried out via the REVOLUTE app. The desired cadence can then also be set here.

PLUG AND PLAY

Installing a hub gear has never been so easy—the HUB A8 is ready to use in no time!

Ob Schnellspannachse oder UDH-Standard, der Einbau der HUB A8 ist extrem schnell und einfach. Tausche bei Bikes mit Steckachse und dem UDH-Standard lediglich das originale UDH-Schaltauge gegen einen Adapter von REVOLUTE und nutze die originale Steckachse weiter. Noch einfacher ist die Installation in Rahmen mit 135 mm Rahmenbreite und einer Schnellspannachse, hier muss ausschließlich das Laufrad ausgetauscht werden. Nutze auch hier die originale Schnellspannachse weiter. Es müssen keine Kabel oder Bowdenzüge verlegt werden! Auch musst du keine komplizierte Adapterlösung an der Bremse installieren, um das Reaktions-Drehmoment abzustützen! Konfiguriere die HUB A8 in Minuten mit der REVOLUTE App und schon kann die erste Tour starten.

NO MAINTENANCE REQUIRED

You don't have to worry about anything except driving and having fun!

The HUB A8 is delivered with lifetime lubrication using REVOLUTE special grease. You don't have to worry about anything else. All electronic components are also installed inside the housing and protected from harmful environmental influences. Thanks to its technical design, there is no need for any adjustment or calibration work.

Specifications

specifications

Number of gears	8
Gear Shift	Automatic (optional manual via wireless trigger)
Overall gear ratio	419 %
Maximum input torque	120 Nm
Use in e-bikes	Yes, according to DIN EN 15194:2018-11
Compatible frame widths	135 mm
	142 mm
	148 mm
Axle	Original thru axle / quick release axle
Torque Support	using 135 mm adapter
Torque Support	using 142/148 mm UDH adapter
Number of Spokes	32 or 36
Spoke flange distance	54,5 mm
Spoke hole diameter	2,9 mm
Spoke flange width	3,2 mm
Hole circle diameter of the spokes	118 mm
Rim sizes	20″ and larger
brake discs	All 6-hole brake discs
Brake disc bolt length	10 mm
Torque for brake disc screws	Manufacturer's specifications, but max. 6.2 Nm
Brake disc sizes	160 mm or larger
Primary transmission ratio	2 or greater
Pinion Mount	9-Spline
Chainline	135 mm: 45.5 mm (45.5–51 mm with spacer)
	142 mm: 45.5 mm (45.5–51 mm with spacers)
	148 mm: 42.5 mm (42.5–48 mm with spacers)
Temperature Range	−20 °C to +50 °C
Lubrication	Grease (lifetime filling)
Wartung	Not necessary
Weight	~1.8 kg including integrated electrical circuitry
Color	Matte black