Astr
ASTR GRX600 2x12 AST01As(M)
- XS
- S
- M
- L
- XL
About Astr
The Astr brings all the features of the Astr RS to an affordable price point: from aerodynamic improvements to modern gravel geometry.
The Astr is ready for every fast ride or gravel race on every type of terrain. Just like the Astr RS, the Astr has a tire clearance of 47 - 52 mm (52 millimeters with a 1x setup and 47 millimeters with a 2x setup) for increased grip and comfort.
Modern performance geometry also requires more stability due to increasingly rough terrain combined with higher speeds. A 71.5-degree headtube angle ensures you have faster steering. The Astr RS features a steeper seat tube (74 degrees), making climbing performance and power transfer better than with a less steep seat tube.
The product developers kept the chainstays as short as possible to accommodate tyres up to 52 millimetres without losing the feeling of responsiveness when accelerating. In addition, the bottom bracket is a bit lower than on bikes that bet on comfort. This ensures you have more stability at high speed. Finally, the head height is lower, so you sit more aerodynamically on the bike. In summary, this boils down to a modern competitive geometry, tailored for the ambitious gravel racer.
With the addition of the Astr to the lineup, Ridley underscores its ambition to offer everyone the chance to own an Astr: from ambitious amateurs to the most dedicated pros.
Diffuser fork crown
The fork crown has an integrated diffuser to reduce drag. The airflow passes more easily through fork crown while extra energy is added to it. The result is that the airflow passes the downtube more easily without pushing the bike back. At the same time there is less drag in the area behind the fork and headtube.
Less resistance, more speed!
Performance geometry
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.
The product developers kept the chainstays as short as possible to accommodate tyres up to 52 millimetres without losing the feeling of responsiveness when accelerating. In addition, the bottom bracket is a bit lower. This ensures you have more stability at high speed. Finally, the head height is lower, so you sit more aerodynamically on the bike. In summary, this boils down to a modern competitive geometry, tailor-made for the ambitious gravel racer.
Aero-to-weight
Just like the Astr RS, the Astr is also built according to the 'aero-to-weight' principle. The aero-to-weight principle is the trend in the cycling peloton. Ridley no longer makes riders choose between aerodynamics and weight but combines the best of both worlds.
The only difference is that we opt for a different carbon composition with a slight variation in weight, a round seatpost, and the Cirrus Pro Integrated gravel cockpit. After all, Ridley's goal is to give everyone the opportunity to purchase an ASTR: from the ambitious amateur to the most dedicated professional.
Tire clearance up to 52 millimetres
The Astr family has a tyre clearance of 52 millimetres on a 1x setup and 47 millimetres on a 2x setup. Our product developers took this decision because the race terrain is getting rougher and riders feel the need to be armed for this. With this, we confirm our role as a trendsetter in the gravel segment.
UDH Hanger
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.
Removable front derailleur clamp
Specifications
Frame
ASTR, HM carbon, BB86, TA12x142Material
CarbonFrame Level
Essential SeriesMax Tire Clearance 700c (*)
52mm (1x drivetrain) / 47mm (2x drivetrain)Paint Finish
GlossyFork
ASTR, TA 12x100, Integrated forkcrown diffuser; 50mm rake, D-Shape steererGroupset
Shimano GRX600 2x12spRear Derailleur
Shimano GRX 800 , 12sp , Medium Cage (36T)Crank
172,5 , 46-30Cassette
Shimano 105 , 12s , 11-36Front Derailleur
Shimano GRX 800 , Braze-OnBrake Type
Flat MountFront Wheel
4ZA Breva Front 21TL - 3BFdbV2 - W/StickersRear Wheel
4ZA Breva Rear 21TL - 3BFdbV2 SHI - W/StickersOuter Tyre
Vittoria Terreno Dry TLR , 700x47c , Folding-TLR , Tan WallHandlebar
Deda Super Zero Gravel Alloy 40 RHM POBStem
Deda Super Box , 90 mm , Polish On BlackSeatpost
4ZA Cirrus , 27.2 , 400mm , Zero offset , BlackSaddle
Selle Italia Model X , BlackRange
Gravel
Geometry
What is my size?| XS | S | M | L | XL | |
|---|---|---|---|---|---|
| A | 765 | 790 | 860 | 890 | 915 |
| B | 475 | 500 | 5020 | 550 | 575 |
| C | 525 | 550 | 570 | 590 | 615 |
| D | 115 | 130 | 150 | 175 | 200 |
| E | 74.5 | 74 | 74 | 74 | 73.5 |
| F | 71 | 71 | 71.5 | 71.5 | 71.5 |
| G | 425 | 425 | 425 | 425 | 425 |
| H | 75 | 75 | 75 | 75 | 75 |
| I | 1006 | 1027 | 1043 | 1064 | 1085 |
| J | - | - | - | - | - |
| S | 536 | 550 | 571 | 595 | 619 |
| R | 376 | 392 | 406 | 419 | 432 |
Reviews
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Help & support
How can we help?
The frame needs a 12mm TA with a thread of 1mm (Ridley article code QRET124ZA046)
The uses the SRAM Universal Derailleur Hanger (UDH). This means you will find easily a replacement hanger wherever you are as it is a standardised hanger (Ridley article code HANUDHSRA001)
We use a BB86 press-fit bottom bracket standard on the Fenix SLiC, Fenix Disc, Kanzo Adventure, Kanzo Fast, Grifn, X-Night RS, Falcn (RS), ASTR (RS)
The maximum torque to fix the seatpost clamp is 10Nm, like mentionned on the clamp
The frame uses a traditionnal 27,2mm round seatpost.
No, there are no mounting points for mudguards
Frame weight of the ASTR is 1090gr (+-10%) for an unpainted frame in size M.
The tire clearance for the ASTR (RS) is 47mm when using a 2x groupset or 52mm when using a 1x groupset. This is the actual width of the tire on the rim and can be different from what's indicated on the tire.
Check stock
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