Officine Mattio Santiago AC (2026)

gravel · steel · sizes XS–XXL Manufacturer’s website

Geometry ?

Officine Mattio Santiago AC 2026 geometry in sizes XS–XXL: stack 519–626 mm, reach 344–413 mm, head angle 70–73°.

	XS	S	M	L	XL	XXL
Stack	519 mm	529 mm	550 mm	576 mm	599 mm	626 mm
Reach	344 mm	371 mm	380 mm	389 mm	400 mm	413 mm
Head angle	70°	70°	71.5°	72.5°	72.5°	73°
Seat angle	73°	73°	73°	72.5°	72.5°	72.5°
Seat tube (c-t)	465 mm	480 mm	510 mm	530 mm	550 mm	570 mm
Head tube	90 mm	110 mm	130 mm	150 mm	175 mm	200 mm
Top tube (effective)	500 mm	530 mm	550 mm	570 mm	590 mm	610 mm
BB drop	70 mm	70 mm	70 mm	70 mm	70 mm	70 mm
Chainstay	430 mm	430 mm	430 mm	430 mm	430 mm	435 mm
Wheelbase	970 mm	1010 mm	1018 mm	1024 mm	1044 mm	1061 mm
Standover	740 mm	755 mm	776 mm	800 mm	821 mm	830 mm
Fork length	395 mm	395 mm	395 mm	395 mm	395 mm	395 mm

Source: officinemattio.com, checked 12 Nov 2026 · bar position: worked out from published data

Stock build

I don’t have the build for each size yet.

Frames with similar geometry

Stack and reach within 12 mm of size L (stack 576 / reach 389 mm).

Spotted a mistake or a missing build? Let me know.

Are you the manufacturer, or do you sell this bike? I’m missing 8 values for this model’s stem and bars. Add them