Wilier Triestina Jaroon Alu geometryGravel · 2024 · 5 sizes, from XS to XL

The Wilier Triestina Jaroon Alu is a gravel bike available in 5 sizes, from XS to XL. Stack ranges from 548 to 626 mm and reach from 384 to 417 mm. Its position sits between racing and endurance. All sizes share 440 mm chainstays.

Stack548–626mm

Reach384–417mm

Head angle70.0–70.0°

Chainstay length440mm

Stable rearPlantedCalm steering

What size Jaroon Alu 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.

Stack in mm Reach in mm Compare on Fitbikefy →

XSS 548 · R 384

SS 567 · R 392

MS 587 · R 401

LS 606 · R 409

XLS 626 · R 417

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

Geometry chart by size

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

Size	XS	S	M	L	XL
Stack	548	567	587	606	626
Reach	384	392	401	409	417
Effective top tube	540	555	570	585	600
Seat tube (centre-to-top)	440	470	500	530	560
Seat tube (centre-to-centre)	440	470	500	530	560
Head tube length	100	125	150	175	200
Head angle	70.0°	70.0°	70.0°	70.0°	70.0°
Chainstay length	440	440	440	440	440
Wheelbase	1,037	1,054	1,071	1,088	1,104
Seat angle (method not stated)	74.0°	74.0°	74.0°	74.0°	74.0°

Source: Wilier Triestina official website · data from 11 Nov 2026.

Stack and reach of every size

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

Character of each size

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

Positionracing → relaxed

Steeringcalm → quick

Pedallingrearward → forward

Bottom brackethigh → low

—

Wheelbaselively → planted

Rear endstable → agile

Bikes with similar geometry (size M)

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

ModelΔ stackΔ reach

Wilier Triestina Jaroon · M2027±0 mm±0 mmCompare →

Factor ALUTO · 562026−2 mm+1 mmCompare →

Trek Checkmate Carbon · ML2025−3 mm−2 mmCompare →

Wilier Triestina Rave SLR Gravel · XL2025+2 mm−3 mmCompare →

Wilier Triestina Rave SL · XL2025+2 mm−3 mmCompare →

Colnago G5-X · 5402026+4 mm±0 mmCompare →

Jaroon Alu or Jaroon? In size M they have exactly the same stack and reach (587 / 401 mm): the difference is in the frame and build, not the position.

Frequently asked questions

What size Jaroon Alu 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 548/384 mm in size XS to 626/417 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 Jaroon Alu in size M?

Stack of 587 mm and reach of 401 mm, with an effective top tube of 570 mm and a head angle of 70.0°.

Is the Jaroon Alu a racing or an endurance bike?

In between. In size M its stack-to-reach ratio is at percentile 47 of gravel bikes: neither very low nor very tall.

Does it have the same geometry as the Jaroon?

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