BMC Kaius 01 geometry

BMC Kaius 01 (carbon gravel) has 6 published frame sizes. Stack 510–620 mm; reach 390–414 mm. Sources, weights and tyre clearance where available.

Gravel · carbon · Model year not specified

Check the source. The frame version or current availability is not fully confirmed. Check the source notes.

Measurements

Lengths in mm · Angles in degrees Select + beneath a size to compare

BMC Kaius 01 geometry
Frame size	47	51	54	56	58	61
Stack mm	510	530	550	570	595	620
Reach mm	390	397	401	405	410	414
Effective top tube mm	546	559	569	579	592	604
Seat tube length mm	428	452	468	493	513	533
Head tube length mm	85	106	123	144	170	196
Head tube angle °	71	71	72	72	72	72
Seat tube angle °	73	73	73	73	73	73
Chainstay length mm	420	420	420	420	420	420
Wheelbase mm	1003	1017	1015	1026	1039	1051
Bottom bracket drop mm	80	80	80	80	80	80
Bottom bracket height mm	—	—	—	—	—	—
Fork length mm	387	387	387	387	387	387
Fork offset mm	50	50	45	45	45	45
Trail mm	68	68	68	68	68	68
Standover height mm	684	722	756	780	798	818
Front centre mm	596	610	608	619	632	644

— Not published in the collected chart. Size labels follow the manufacturer.

Frame: 910 g
BMC claimed first-generation Kaius 01 frame in its 1,785 g module. UDH-equipped Gen 1 uses this platform; reference size, finish and hardware inclusion unspecified.
Manufacturer specification
Fork: 400 g
BMC claimed first-generation Kaius 01 fork in its 1,785 g module. Reference size, finish and steerer length unspecified.
Manufacturer specification

Up to 44 mm · 700C
Manufacturer specifies measured tyre width. Wheel size defaults to 700C for catalogue filtering; not explicitly specified by the source.
Manufacturer specification

Reviewed 2026-10-01

Measurement and frame notes

BMC lists the first-generation Kaius 01 at 910 g frame and 400 g fork as parts of its 1,785 g module; size and finish are unspecified.