Grifn A Gravel Shimano GRX600 2x12sp

The Ridley Grifn A Gravel is the aluminum interpretation of Ridley’s broader Grifn all-road concept, aimed at riders who want one drop-bar bike to cover paved riding, commuting, and lighter gravel use without moving to a more dirt-biased gravel platform. Rather than chasing maximum tire clearance or ultra-stable off-road geometry, it sits deliberately between road and gravel categories. That positioning is central to the bike: it is intended to feel quicker and more road-like than a typical adventure gravel bike, while still offering enough tire room and utility features for mixed-surface riding.

Its design reflects that practical all-road brief. The frame is built from 6061-T6 aluminum and paired with a full-carbon fork, with details that make it more versatile than many alloy road-adjacent bikes, including fender mounts, numerous accessory mounts, and internal routing provision for a dynamo and lights through the fork. Ridley also uses SRAM’s Universal Derailleur Hanger, a notably current standard for this category. Tire clearance is moderate rather than expansive—up to 38 mm with 2x drivetrains or 40 mm with 1x—which reinforces that the Grifn A Gravel is best understood as a fast, utility-capable all-roader rather than a heavy-duty backcountry gravel bike.

Price TBD
Ridley Grifn A Gravel Shimano GRX600 2x12sp
Build
Size
Stack553mm
Reach386mm
Top tube545mm
Headtube length130mm
Standover height800mm
Seat tube length505mm

Fit and geometry

The geometry supports Ridley’s claim that the Grifn A Gravel is an all-road bike first and a gravel bike second. Across most sizes, the head tube angle is a relatively quick 72 degrees, relaxing slightly to 71.5 degrees in XXS and XS for stability with smaller front wheels and shorter front centers. Chainstays are a short 420 mm in every size, and wheelbase remains compact for the category at 982 mm in XXS up to 1057 mm in XL. Those numbers point to a bike that should respond more like an endurance road bike on pavement than a long, planted gravel machine.

Fit numbers are also moderate and conventional, with reach spanning 372 mm in XXS to 414 mm in XL and stack from 515 mm to 622 mm. The 74-degree seat tube angle in the middle sizes keeps rider position neutral, while the slightly steeper 74.5-degree angle in the smallest sizes and 73.5-degree angle in XL help maintain fit consistency across the range. BB drop ranges from 75 mm in the smaller sizes to 71 mm in L and XL, suggesting a reasonably stable seated feel without pushing the bike into especially low-slung gravel territory. Overall, the geometry should suit riders looking for a balanced, efficient position and quick handling on mixed but not highly technical terrain.

Full specs

Frameset

Frame

Grifn A BR-75-M/UNP (Hydro Series aluminium)

Fork

4ZA Allroad 7E7 (Black Glossy)

Groupset

Shift levers

Shimano GRX400 2x10-speed

Front derailleur

Shimano GRX400 2x

Rear derailleur

Shimano GRX400 10-speed

Cassette

Shimano GRX400 10-speed (exact range not specified)

Chain

Shimano 10-speed (exact model not specified)

Crankset

Shimano GRX400 2x10-speed (exact model/teeth not specified)

Bottom bracket

Shimano (model/standard not specified)

Front brake

Shimano GRX400 hydraulic disc, flat-mount

Rear brake

Shimano GRX400 hydraulic disc, flat-mount

Front rotor

Disc rotor (size not specified)

Rear rotor

Disc rotor (size not specified)

Cockpit

Stem

Not specified

Handlebars

Not specified

Saddle

Not specified

Seatpost

Not specified

Builds

The Grifn A Gravel is offered in two Shimano GRX builds, both using 2x drivetrains: a GRX600 2x12-speed model and a GRX400 2x10-speed model. That build structure aligns with the bike’s all-road intent. Ridley is clearly prioritizing closely spaced gearing and broad usability over the simplicity of a 1x setup, which makes sense on a platform meant to split time between pavement, commuting, and moderate gravel.

Without detailed pricing or full component lists, the clearest distinction is transmission level. The GRX600 2x12 build should appeal to riders who want the newer 12-speed drivetrain and a more current mid-range gravel groupset, while the GRX400 2x10 build is the more accessible entry point in the range. In both cases, the spec logic appears consistent with the frame: practical, versatile, and oriented toward mixed-surface riding rather than aggressive off-road specialization.

Shimano GRX400 2x10sp

Shimano GRX400 2x10sp

Price TBD

Shimano GRX600 2x12sp

Shimano GRX600 2x12sp

Price TBD

Selected