Isaac: stock cockpit data
27 values missing in 7 of 10 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 Isaac 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
Boson 2026
6 missingendurance road · carbon · sizes S–XXL · how visitors see it now
Builds: Boson Shimano 105, Boson Shimano 105 Di2, Boson Shimano Ultegra Di2
Cockpit: integrated cockpit ISAAC Airflow Carbon
Bar reach 58 mm
| Size | S | M | L | XL | XXL |
|---|---|---|---|---|---|
| Cockpit length (mm) |
Cranks, bar width and seatpost setback (optional) 11 missing
Bar width at the hoods, centre to centre.
| Size | S | M | L | XL | XXL |
|---|---|---|---|---|---|
| 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 [email protected]. 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.
Boson RS 2027
3 missingroad · carbon · sizes XXS–XXL · how visitors see it now
Build: Boson RS Shimano 105 Di2 R7150, DT Swiss wheels
Cockpit: bars Isaac Airflow III aluminium 380 / aluminium stem 80 mm −8°
| Size | XXS | XS | S | M | L | XL | XXL |
|---|---|---|---|---|---|---|---|
| Stem (mm) | |||||||
| Angle (°) | |||||||
| Bar reach (mm) |
Cranks, bar width and seatpost setback (optional) 2 missing
Bar width at the hoods, centre to centre.
| Size | XXS | XS | S | M | L | XL | XXL |
|---|---|---|---|---|---|---|---|
| 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.
Element 2026
6 missingroad · carbon · sizes S–XXL · how visitors see it now
Builds: Element Shimano 105 Di2, Element Shimano Ultegra Di2, Element Shimano Dura-Ace Di2
Cockpit: integrated cockpit ISAAC Airflow Carbon
Bar reach 58 mm
| Size | S | M | L | XL | XXL |
|---|---|---|---|---|---|
| Cockpit length (mm) |
Cranks, bar width and seatpost setback (optional) 11 missing
Bar width at the hoods, centre to centre.
| Size | S | M | L | XL | XXL |
|---|---|---|---|---|---|
| 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.
Kaon 2026
2 missinggravel · carbon · sizes S–XL · how visitors see it now
Builds: Kaon Shimano 105, Kaon Shimano 105 Di2, Kaon Shimano GRX 610/820 2x12
Cockpit: stem Isaac
Stem (mm): S 90, M 100, L 100, XL 120
| Size | S | M | L | XL |
|---|---|---|---|---|
| Stem (mm) |
Cranks, bar width and seatpost setback (optional) 5 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.
Meson 2026
6 missingaero road · carbon · sizes XS–XL · how visitors see it now
Build: Meson Shimano 105 Di2 (Jade Green)
Cockpit: integrated cockpit ISAAC Airflow Carbon
Bar reach 58 mm
| Size | XS | S | M | L | XL |
|---|---|---|---|---|---|
| Cockpit length (mm) |
Cranks, bar width and seatpost setback (optional) 11 missing
Bar width at the hoods, centre to centre.
| Size | XS | 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.
Meson RC 2027
6 missingaero road · carbon · sizes XS–XL · how visitors see it now
Builds: Meson RC Shimano 105 Di2, Meson RC Shimano Ultegra Di2, Meson RC Shimano Dura-Ace Di2
Cockpit: integrated cockpit ISAAC Airflow Carbon
Bar reach 58 mm
| Size | XS | S | M | L | XL |
|---|---|---|---|---|---|
| Cockpit length (mm) |
Cranks, bar width and seatpost setback (optional) 11 missing
Bar width at the hoods, centre to centre.
| Size | XS | 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.
Vitron GT 2027
3 missingendurance road · carbon · sizes XXS–XL · how visitors see it now
Build: Vitron GT Shimano 105
Cockpit: stem Isaac (varies by size)
| Size | XXS | XS | S | M | L | XL |
|---|---|---|---|---|---|---|
| Stem (mm) | ||||||
| Angle (°) | ||||||
| Bar reach (mm) |
Cranks, bar width and seatpost setback (optional) 2 missing
Bar width at the hoods, centre to centre.
| Size | XXS | XS | 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.
Models with all three values (3)
Hadron GT 2027
all filled ingravel · carbon · sizes XS–XL · how visitors see it now
Builds: Hadron GT Shimano GRX 610/820 2x12, Hadron GT Shimano GRX 825 Di2 2x12
Cockpit: bars Isaac Pebble Competition aluminium flared 380 / aluminium stem 80 mm −8°
Stem (mm): XS 80, S 90, M 100, L 100, XL 110 · Angle −8° · Bar reach 78 mm
| Size | XS | S | M | L | XL |
|---|---|---|---|---|---|
| Stem (mm) |
Cranks, bar width and seatpost setback (optional) 1 missing
Bar width at the hoods, centre to centre.
| Size | XS | 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.
Torus 2026
all filled ingravel · carbon · sizes XS–XXL · how visitors see it now
Build: Torus Shimano GRX RX610 2x12, DT Swiss G1800
Cockpit: bars Isaac Airway Competition aluminium 380 / aluminium stem 80 mm −8°
Stem (mm): XS 80, S 90, M 100, L 110, XL 110, XXL 120 · Angle −8° · Bar reach 78 mm
| Size | XS | S | M | L | XL | XXL |
|---|---|---|---|---|---|---|
| Stem (mm) |
Cranks, bar width and seatpost setback (optional)
Bar width at the hoods, centre to centre.
| Size | XS | S | M | L | XL | XXL |
|---|---|---|---|---|---|---|
| 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.
Torus XR 2027
all filled ingravel · carbon · sizes XS–XXL · how visitors see it now
Build: Torus XR SRAM Rival XPLR AXS E1 1x13, DT Swiss G1800
Cockpit: bars Isaac Airway Competition aluminium 380 / aluminium stem 80 mm −8°
Stem (mm): XS 80, S 90, M 100, L 110, XL 110, XXL 120 · Angle −8° · Bar reach 78 mm
| Size | XS | S | M | L | XL | XXL |
|---|---|---|---|---|---|---|
| Stem (mm) |
Cranks, bar width and seatpost setback (optional) 1 missing
Bar width at the hoods, centre to centre.
| Size | XS | S | M | L | XL | XXL |
|---|---|---|---|---|---|---|
| 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.