Model Size	Head Angle	Seat Angle	Top Tube (Effective)		Seat Tube (C-T)		Chainstay		BB Height		Wheel Base		Stand Over
14"	67.5	71.5	22.0	559	14.0	355	16.9	428	13.9	355	42.7	1086	30.5	777
16"	68	71.5	23.2	589	16.0	405	16.9	428	13.9	355	43.5	1105	30.5	777
18"	68	71.5	24.1	613	18.0	460	16.9	428	13.9	355	44.5	1130	31.3	795
20"	68	71.5	24.9	633	20.0	510	16.9	428	13.9	355	45.0	1145	32.4	825
Extreme X6 frame geometry based on 150mm travel fork.