Geometry ?
Maxbike Gravel ALU (Borax / Onyx / Granit) 2025 geometry in sizes S–XL: stack 532–582 mm, reach 382–393 mm, head angle 70–72°.
| S | M | L | XL | |
|---|---|---|---|---|
| Stack | 532 mm | 547 mm | 563 mm | 582 mm |
| Reach | 382 mm | 383 mm | 384 mm | 393 mm |
| Head angle | 70° | 71.5° | 72° | 72° |
| Seat angle | 75° | 74.5° | 74° | 74° |
| Seat tube (c-t) | 480 mm | 520 mm | 540 mm | 560 mm |
| Head tube | 115 mm | 125 mm | 140 mm | 160 mm |
| Top tube (effective) | 525 mm | 535 mm | 545 mm | 560 mm |
| BB drop | 68 mm | 68 mm | 68 mm | 68 mm |
| Chainstay | 425 mm | 425 mm | 425 mm | 425 mm |
| Wheelbase | 1000 mm | 1020 mm | 1026 mm | 1037 mm |
| Fork length | 395 mm | 395 mm | 395 mm | 395 mm |
| Fork offset | 45 mm | 45 mm | 45 mm | 45 mm |
| Stock build by size | ||||
| Bar width | 440 mm | 440 mm | 440 mm | 440 mm |
| Seatpost setback | 25 mm | 25 mm | 25 mm | 25 mm |
Source: maxbike.cz, checked 1 Nov 2026 · bar position: worked out from published data
Calculated values: stack, reach
S stack 532 mm, S reach 382 mm, M stack 547 mm, M reach 383 mm, L stack 563 mm, L reach 384 mm, XL stack 582 mm, XL reach 393 mm. The manufacturer doesn’t publish stack and reach. I worked them out from the fork length and offset, the angles, the head tube, the top tube and the BB drop. The wheelbase, though, comes out 10–19 mm off the manufacturer’s table, so one of the published figures is wrong. That makes it accurate to only about ±15 mm. Corrections
Stock build
Borax ≈ €1,480
- Groupset
- Shimano GRX 1×11 (GRX600 levers, GRX812 RD, 40T, 11-42)
- Shifters
- Shimano GRX ST-RX600
- Cranks
- Shimano GRX FC-RX600 40T
- Stem
- Ritchey
- Handlebar
- Ritchey Comp Gravel Baquiano 440 mm
- Seatpost
- Ritchey Comp AL6061 27.2/400/25 mm offset
- Saddle
- Selle Italia X3
- List price
- 36,990 CZK (maxbike.cz, 1 Nov 2026)
Onyx ≈ €1,400
- Groupset
- Shimano GRX 2×10 (GRX400, 46/30, 11-36)
- Shifters
- Shimano GRX ST-RX400
- Cranks
- Shimano GRX600 46/30
- Stem
- Ritchey
- Handlebar
- Ritchey Comp Gravel Baquiano 440 mm
- Seatpost
- Ritchey Comp AL6061 27.2/400/25 mm offset
- Saddle
- Selle Italia X3
- List price
- 34,990 CZK (maxbike.cz, 1 Nov 2026)
Granit ≈ €1,040
- Groupset
- Shimano Sora 2×9 (R3000, Altus FC-MT210 46/30, 11-34), mech. disc RS305
- Shifters
- Shimano Sora ST-R3000
- Cranks
- Shimano Altus FC-MT210 46/30
- Handlebar
- Gravel ZOOM 440 mm
- Seatpost
- ZOOM SP-215 27.2/400
- Saddle
- Selle Italia X3
- List price
- 25,990 CZK (maxbike.cz, 1 Nov 2026)
Source for all builds: maxbike.cz, checked 1 Nov 2026
Frames with similar geometry
Stack and reach within 12 mm of size S (stack 532 / reach 382 mm).
Stack and reach within 12 mm of size M (stack 547 / reach 383 mm).
Stack and reach within 12 mm of size L (stack 563 / reach 384 mm).
Stack and reach within 12 mm of size XL (stack 582 / reach 393 mm).
Spotted a mistake or a missing build? Let me know.
Are you the manufacturer, or do you sell this bike? I’m missing 11 values for this model’s stem and bars. Add them