Geometry ?
Rondo Bogan ST 2026 geometry in sizes S–XL: stack 582–638 mm, reach 401–424 mm, head angle 70°.
| S | M | L | XL | |
|---|---|---|---|---|
| Stack | 582 mm | 601 mm | 619 mm | 638 mm |
| Reach | 401 mm | 406 mm | 414 mm | 424 mm |
| Head angle | 70° | 70° | 70° | 70° |
| Seat angle | 73° | 73° | 73° | 73° |
| Seat tube (c-t) | 470 mm | 490 mm | 510 mm | 530 mm |
| Head tube | 140 mm | 160 mm | 180 mm | 200 mm |
| Top tube (effective) | 575 mm | 585 mm | 600 mm | 620 mm |
| BB drop | 80 mm | 80 mm | 80 mm | 80 mm |
| Chainstay | 435 mm | 435 mm | 435 mm | 435 mm |
| Fork length | 400 mm | 400 mm | 400 mm | 400 mm |
| Fork offset | 45 mm | 45 mm | 45 mm | 45 mm |
| Stock build by size | ||||
| Cranks | 170 mm | 172.5 mm | 172.5 mm | 175 mm |
| Stem | 60 mm | 60 mm | 80 mm | 80 mm |
| Bar width | 440 mm | 440 mm | 460 mm | 460 mm |
Source: rondo.cc, checked 1 Nov 2026 · bar position: worked out from published data
Manufacturer’s data sheet (PDF)
An older model year in the archive with the same stack, reach and head angle: 2020. Source: granfondo-cycling.com
Stock build
Bogan ST1
- Groupset
- Shimano GRX RX400 2×10
- Shifters
- SHIMANO GRX SR-RX400
- Cranks
- RONDO 2×46/30T
- Stem
- RONDO 60 mm(S, M), 80 mm(L, XL)
- Handlebar
- RONDO BOOMERANG
- Seatpost
- RONDO 350×27.2
- Saddle
- WTB VOLT
Source: rondo.cc, checked 1 Nov 2026
Frames with similar geometry
Stack and reach within 12 mm of size S (stack 582 / reach 401 mm).
Stack and reach within 12 mm of size M (stack 601 / reach 406 mm).
Stack and reach within 12 mm of size L (stack 619 / reach 414 mm).
Stack and reach within 12 mm of size XL (stack 638 / reach 424 mm).
Spotted a mistake or a missing build? Let me know.
Are you the manufacturer, or do you sell this bike? I’m missing 2 values for this model’s stem and bars. Add them