Ridley E-ASTR GRX DI2 1x12 Electric Gravel Bike

The E-ASTR is an e-bike for the rider looking for a pure riding experience with the added benefit of electrical support to make the riding more enjoyable.

We have selected the lightweight TQ system for this e-bike and we managed keep the look of the bike as close as possible to the non assisted ASTR RS version. We have even hidden the controls and display to keep the e-system as stealthy as possible.

Features

• In addition to the light system weight the TQ drive unit is also very silent and the support level it provides is least intrusive we have ever experienced from any drive unit.
• The E-ASTR delivers a riding experience so natural you barely notice the motor. The TQ HPR40 provides support exactly when needed and disengages smoothly above 25 km/h, without any jerks or extra resistance. This keeps the cycling feel 100% authentic — sporty, fluid, and fully controlled, with just that little extra power for every challenging moment.
• The Astr family features groundbreaking tire clearance: 52 millimeters with a 1x setup and 47 millimeters with a 2x setup. This is no coincidence, but the result of a carefully considered vision from our product developers. They anticipated the increasing technical demands of gravel racing and the growing desire among riders for more grip, stability, and versatility. At a time when gravel bikes are continually pushing boundaries, the Astr family positions itself as a category-leading innovator. With these exceptional specifications, we underline our ambition not just to follow trends, but to inspire and define what gravel.
• The E-ASTR is powered by the brand-new TQ HPR40 drive unit. With the highest torque-to-weight ratio in its class, it operates almost silently and offers a responsiveness that blurs the line between rider and motor. This piece of high-tech precision is currently the lightest and most compact system on the market. Weighing just 1.2 kg for the motor and 1.46 kg for the battery, the overall weight remains minimal. Visually too, the system is discreet: the motor is subtly hidden behind the chainrings, and the battery is elegantly integrated into the downtube.
• The integrated 290 Wh lithium-ion battery of the TQ HPR40 drive unit combines an exceptionally low weight of just 1,460 grams with the best weight-to-capacity ratio in its class. Advanced software precisely manages energy consumption, ensuring every ride – from steep climbs to long day trips – is as efficient as possible. Everything about this battery is designed for maximum performance and a natural riding feel, perfectly integrated into the bike’s design.
• The universal derailleur hanger (UDH) is the new standard in the cycling world. Not only is this derailleur hanger compatible with all modern shifting groups, it also protects against derailleur breakage and chain drops. In mountain biking, UDH has long been very common, and Ridley is bringing the technology to other segments as well.
• Modern performance geometry demands more stability due to increasingly rough terrain combined with higher speeds. A 71.5-degree headtube angle ensures you have faster handling. The Astr family features a steeper seat tube (74 degrees), improving climbing performance and power transfer.

Specifications

• Material: Carbon
• Frame Level: Elite Series
• Max Tire Clearance 700c (*): 50 mm
• Groupset: Shimano GRX800 1x12sp DI2
• Rear Derailleur: Shimano XT RD-M8250 GSB 12s
• Crank: Praxis Type-5 , 42T , 172mm
• Cassette: Shimano XT , 12s , 10-45T
• Brake Type: Flat Mount
• Range: Gravel

Geometry