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Ridley Grifn RS Road geometryRoad · 2027 · 6 sizes, from XXS to XL

The Ridley Grifn RS Road is a road bike available in 6 sizes, from XXS to XL. Stack ranges from 524 to 633 mm and reach from 375 to 412 mm. Its position sits between racing and endurance. All sizes share 420 mm chainstays. Data from 2027; geometry from 2026, 2025, 2024 is also available.

Stack524–633mm
Reach375–412mm
Head angle71.0–72.0°
Chainstay length420mm
Stable rear

What size Grifn RS Road do I need?

Enter the stack and reach of a bike that fits you well and we will tell you which size is closest and how to set it up.

Compare on Fitbikefy →
XXSS 524 · R 375
XSS 540 · R 375
SS 563 · R 383
MS 587 · R 391
LS 614 · R 403
XLS 633 · R 412

Enter your stack and reach to see which size fits you best.

Geometry chart by size

Measurements in mm and degrees, as published by Ridley. The ones that matter most for choosing a size are in bold.

SizeXXSXSSMLXL
Stack524540563587614633
Reach375375383391403412
Effective top tube515525545565585605
Head tube length100115140165195215
Head angle71.0°71.5°72.0°72.0°72.0°72.0°
Chainstay length420420420420420420
Wheelbase9929941,0051,0211,0431,058
BB drop757573737171
Standover749765790814843862
Seat tube (method not stated)440470500520545570
Seat angle (method not stated)75.0°74.5°74.0°73.5°73.5°73.0°

Source: Ridley official website · data from 11 Nov 2026.

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Ridley Grifn RS Road 2027

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Stack and reach of every size

Higher means a taller front end; further right means a longer reach. The blue dot is your search.

350360370380390400410420430440480500520540560580600620640660680reach (mm) →↑ stack (mm)XXSXSSMLXL

Character of each size

Compared with other road bikes. Further right means more of that quality.

XXS
XS
S
M
L
XL
Positionracing → relaxed
Steeringcalm → quick
Pedallingrearward → forward
Bottom brackethigh → low
Wheelbaselively → planted
Rear endstable → agile

Bikes with similar geometry (size S)

The closest size of other road models, by stack and reach.

ModelΔ stackΔ reach
Ridley Grifn Road · S2027±0 mm±0 mmCompare →
KTM Revelator · M2027+1 mm±0 mmCompare →
Cube Attain SLX · 53 cm2026−2 mm+1 mmCompare →
Cube Attain · 53 cm2026−2 mm+1 mmCompare →
Colnago C68 Allroad · 4902026±0 mm−3 mmCompare →
Canyon Endurace CF SLX · S2027+2 mm+3 mmCompare →
Grifn RS Road or Grifn Road? In size S they have exactly the same stack and reach (563 / 383 mm): the difference is in the frame and build, not the position.

Frequently asked questions

What size Grifn RS Road do I need?

It depends on your position, not just your height. The most reliable way is to compare the stack and reach of a bike that fits you with those of each size (from 524/375 mm in size XXS to 633/412 mm in size XL). The size finder on this page shows the closest size and the stem and spacers you would need.

What are the stack and reach of the Grifn RS Road in size S?

Stack of 563 mm and reach of 383 mm, with an effective top tube of 545 mm and a head angle of 72.0°.

Is the Grifn RS Road a racing or an endurance bike?

In between. In size S its stack-to-reach ratio is at percentile 64 of road bikes: neither very low nor very tall.

Does it have the same geometry as the Grifn Road?

In size S, yes: same stack and reach. If one already fits you, the same size of the other will put you in the same position.