Rock Machine: stock cockpit data
10 values missing in 3 of 4 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 Rock Machine 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
Gravelride Alloy 2024
4 missinggravel · aluminium · sizes M–L · how visitors see it now
I don’t have the stock build for this model.
| Size | M | L |
|---|---|---|
| Stem (mm) |
Cranks, bar width and seatpost setback (optional) 5 missing
Bar width at the hoods, centre to centre.
| Size | M | L |
|---|---|---|
| Cranks (mm) | ||
| Bar width (mm) |
Cover, spacers and tyre (optional) 4 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.
Gravelride Crb 2024
5 missinggravel · carbon · sizes S–L · how visitors see it now
I don’t have the stock build for this model.
| Size | S | M | L |
|---|---|---|---|
| Stem (mm) |
Cranks, bar width and seatpost setback (optional) 7 missing
Bar width at the hoods, centre to centre.
| Size | S | M | L |
|---|---|---|---|
| Cranks (mm) | |||
| Bar width (mm) |
Cover, spacers and tyre (optional) 4 missing
A mandatory spacer is one that can’t be removed, for example because of internal hose routing.
Lukk (alloy) 2026
1 missinggravel · aluminium · sizes S–XL · how visitors see it now
Builds: Lukk 50, Lukk 40
Cockpit: stem ONE1 Alloy −8° + bars One1 Compact flared
Stem 80 mm (all sizes) · Angle −8°
| Size | S | M | L | XL |
|---|---|---|---|---|
| Stem (mm) |
Cranks, bar width and seatpost setback (optional) 1 missing
Bar width at the hoods, centre to centre.
| Size | S | M | L | XL |
|---|---|---|---|---|
| Cranks (mm) | ||||
| Bar width (mm) |
Cover, spacers and tyre (optional) 4 missing
A mandatory spacer is one that can’t be removed, for example because of internal hose routing.
Models with all three values (1)
Lukk CR (carbon) 2025
all filled ingravel · carbon · sizes S–XL · how visitors see it now
Builds: Lukk CR 90, Lukk CR 80, Lukk CR 70, Lukk CR 65
Cockpit: stem ONE1 Alloy −8° + bars Satori Allroad Swift
Stem 80 mm (all sizes) · Angle −8° · Bar reach 65 mm
| Size | S | M | L | XL |
|---|---|---|---|---|
| Stem (mm) |
Cranks, bar width and seatpost setback (optional) 1 missing
Bar width at the hoods, centre to centre.
| Size | S | M | L | XL |
|---|---|---|---|---|
| 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.