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GT

GT: stock cockpit data

11 values missing in 2 of 2 models. Database as of 14 Nov 2026.

I’m Marcel Dobrocký, a bike fitter from Brno in the Czech Republic. On sedimi.bike, riders enter their riding position and the site works out which frames and sizes fit them. To do that for GT bikes, I’m missing the stem length or angle and the bar reach.

These are figures you can see on the bike or read off the parts, nothing internal. Where I don’t know them, I use an estimate. With your numbers, the size is worked out from the actual build, and each value is marked ◆ with its source (manufacturer or dealer), with no name attached. Even one model helps. I check every value before it goes in. About sedimi

missingunofficial source, please checkchangedsent, awaiting review

Grade Alloy 2024

7 missing

gravel · aluminium · sizes XS–XL · how visitors see it now

Build: Grade Comp

Cockpit: stem GT 3D Forged SL Alloy, 31.8 + bars GT DropTune RS, Alloy, 16° Flare

SizeXSSMMDLGXL
Stem (mm)
negative for a stem pointing down, e.g. −6
Cranks, bar width and seatpost setback (optional) 11 missing

Bar width at the hoods, centre to centre.

SizeXSSMMDLGXL
Cranks (mm)
Bar width (mm)
Cover, spacers and tyre (optional) 3 missing

A mandatory spacer is one that can’t be removed, for example because of internal hose routing.

Email a spreadsheet or PDFForward to a colleague

Have it in a spreadsheet? Send the export or a price list with the spec, just as it is, to marcel@bikefit.space. I’ll copy the numbers across myself. Don’t have them at hand? Send the link to a colleague in R&D or service.

Not sure? Put a question mark after the number, like 100?, or explain in the note. You can paste a whole row from Excel in one go.

Grade Carbon 2024

4 missing

gravel · carbon · sizes SM–XL · how visitors see it now

Build: Grade Carbon Pro

Cockpit: stem GT 3D Forged SL Alloy 31.8 + bars GT DropTune Super Light 16° flare

Stem 80 mm (all sizes)

negative for a stem pointing down, e.g. −6
Cranks, bar width and seatpost setback (optional) 1 missing

Bar width at the hoods, centre to centre.

SizeSMMDLGXL
Cranks (mm)
Bar width (mm)

Build: Grade Carbon Elite

Cockpit: stem GT 3D Forged SL Alloy 31.8 + bars GT DropTune RS alloy 16° flare

Stem 80 mm (all sizes)

negative for a stem pointing down, e.g. −6
Cranks, bar width and seatpost setback (optional) 1 missing

Bar width at the hoods, centre to centre.

SizeSMMDLGXL
Cranks (mm)
Bar width (mm)
Cover, spacers and tyre (optional) 3 missing

A mandatory spacer is one that can’t be removed, for example because of internal hose routing.

New models

Send what you have

Feel free to send only part of it. You can add the rest another time.

I’ll only use your email if something doesn’t add up and, if you ask, to let you know once the data is on the site. I won’t publish it and I’ll delete it on request. Sending this commits you to nothing.