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Enable Youtube videosThe Ridley ASTR GRX600 2x12 combines the speed of a modern gravel racing bike with the versatility of a wide-range double-chainring drivetrain. Its aerodynamically optimized carbon frame, performance-oriented gravel geometry and reliable Shimano GRX 2x12 groupset make the ASTR an excellent choice for fast gravel races, demanding training sessions and long rides across mixed terrain.
The combination of a 46/30-tooth crankset, an 11-36 cassette and high-quality DT Swiss G1800 wheels makes this model particularly appealing to riders who want to maintain speed on paved roads while having the gearing needed for steep gravel climbs.
The ASTR shares its modern gravel racing geometry with the high-end ASTR RS. Its premium HM carbon frame from Ridley's Essential Series combines aerodynamically optimized tube profiles with an excellent balance of stiffness, weight and efficiency.
Ridley follows its Aero-to-Weight philosophy, combining aerodynamic performance and low weight rather than prioritizing one characteristic alone. The result is a fast carbon frame designed to perform at high speeds and on demanding gravel courses.
One distinctive aerodynamic feature is the carbon fork with an integrated diffuser in the fork crown. This design improves airflow between the fork and down tube, helping to reduce aerodynamic drag.
The Ridley ASTR has been developed specifically for performance-oriented gravel riding. A head tube angle of approximately 71.5 degrees provides responsive and precise steering, while the steep seat tube angle of around 74 degrees supports efficient power transfer.
Short chainstays contribute to agile acceleration and quick changes of direction. The relatively low bottom bracket improves stability at higher speeds, while the lower head tube allows riders to adopt an aerodynamic racing position.
This geometry combines the efficiency of a road racing bike with the control required for fast gravel tracks and more technical off-road terrain.
The mechanical Shimano GRX 2x12 drivetrain is specifically designed for gravel riding. Compared with a single-chainring setup, the double-chainring configuration offers a broad gear range with smaller steps between gears. This makes it easier to maintain a consistent cadence on fast paved sections while providing low gears for steep climbs.
The Shimano GRX 610 crankset features 46/30-tooth chainrings and is paired with a Shimano 105 11-36 cassette. A Shimano GRX 800 rear derailleur and matching GRX 800 front derailleur deliver precise and reliable shifting performance.
This drivetrain is particularly well suited to riders who regularly combine gravel and road cycling or tackle long routes with varying elevation profiles.
The Ridley ASTR GRX600 2x12 comes equipped with high-quality DT Swiss G1800 LN wheels. Developed for gravel riding, these wheels combine a robust construction with dependable performance across different surfaces.
With a 20 mm internal rim width, the wheelset provides a solid platform for modern gravel tires. The bike comes fitted with 45 mm Vittoria Terreno T60 tires, offering traction and control on loose surfaces while maintaining efficient rolling characteristics on firmer terrain.
With its 2x12 drivetrain, the Ridley ASTR offers maximum tire clearance of 47 mm. This allows riders to use sufficiently wide gravel tires for improved traction, comfort and control on demanding gravel surfaces.
The standard 45 mm Vittoria Terreno T60 tires already make excellent use of the available clearance, creating a versatile setup for fast gravel racing, training rides and changing terrain conditions.
The ASTR features a Forza Stratos Pro handlebar and matching stem with semi-integrated cable routing. This creates a clean appearance that complements the aerodynamic frame design.
A 27.2 mm 4ZA Cirrus seatpost and Selle Italia Model A saddle complete the component package. Hydraulic disc brakes provide dependable stopping power and precise modulation in changing weather and surface conditions.
The frame also features a Universal Derailleur Hanger (UDH), making replacement hangers easier to source.
The Ridley ASTR GRX600 2x12 is an excellent choice for ambitious gravel cyclists looking for a fast carbon bike with a versatile gear range. Its aerodynamic frame, performance-oriented geometry and reliable components make it a capable partner for gravel racing, demanding training sessions and high-speed adventures across mixed terrain.
All information is supplied by the manufacturer and is not guaranteed! In rare cases there may be subsequent changes to the specification.
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