2025 Mason Cycles Bokeh TI Base

	48CM	50CM	52CM	54CM	56CM	58CM	60CM	62CM
Stack	525mm	539mm	555mm	567mm	578.5mm	592.7mm	607mm	632.5mm
Reach	364mm	364mm	374mm	379mm	384mm	397mm	403mm	407.5mm
Stack to Reach Ratio	1.44:1	1.48:1	1.48:1	1.5:1	1.51:1	1.49:1	1.51:1	1.55:1
Seat Tube Length, C-T	480mm	500mm	520mm	540mm	560mm	580mm	600mm	620mm
Seat Tube Length, C-C	433mm	453mm	473.5mm	494mm	512mm	534mm	554mm	574mm
Top Tube Length, Effective/Horizontal Center	517mm	521mm	536mm	554mm	562mm	584.5mm	595mm	607.5mm
Top Tube Length, Actual C-C	500mm	505mm	520mm	537mm	547.6mm	569.7mm	581.5mm	592mm
Top Tube Slope	9.7deg	8.6deg	8.2deg	7.6deg	6deg	5.6deg	4.9deg	5.7deg
Head Tube Angle	69.5deg	69.5deg	70deg	70deg	70.5deg	71deg	71deg	71.5deg
Seat Tube Angle	74deg	74deg	74deg	73deg	73deg	72.5deg	72.5deg	72.5deg
Head Tube Length	100mm	115mm	130mm	145mm	155mm	170mm	185mm	210mm
Bottom Bracket Drop	77mm	77mm	77mm	75mm	75mm	73mm	73mm	73mm
Bottom Bracket Height	247mm	266mm	266mm	268mm	268mm	270mm	270mm	270mm
Chainstay Length	435mm	435mm	435mm	435mm	435mm	435mm	435mm	435mm
Chainstay Length Horizontal	428.1mm	428.1mm	428.1mm	428.5mm	428.5mm	428.8mm	428.8mm	428.8mm
Front-Center	590mm	595.5mm	607mm	616mm	620mm	633mm	644mm	651.5mm
Front-Center Horizontal	584.9mm	590.4mm	601.9mm	611.5mm	615.5mm	628.7mm	639.8mm	647.2mm
Wheelbase	1013mm	1018.5mm	1030mm	1040mm	1044mm	1057.5mm	1068.6mm	1076mm
Fork Offset/Rake	50mm	50mm	50mm	50mm	50mm	50mm	50mm	50mm
Fork Length (Axle-To-Crown)	398mm	398mm	398mm	398mm	398mm	398mm	398mm	398mm
Trail	67.8mm high	74.9mm high	71.6mm high	71.6mm high	68.4mm high	65.2mm high	65.2mm high	62mm mid/neutral
Mechanical Trail	63.5mm	70.1mm	67.3mm	67.3mm	64.5mm	61.7mm	61.7mm	58.8mm
Wheel Flop	22.2mm	24.6mm	23mm	23mm	21.5mm	20.1mm	20.1mm	18.7mm
Standover Height	72365047mm	748mm	766.5mm	785mm	800mm	822mm	837mm	860mm
Tire to Pedal Spindle	101mm 165 mm cranks	87.5mm 165 mm cranks	94mm 170 mm cranks	103mm 170 mm cranks	104.5mm 172.5 mm cranks	117.5mm 172.5 mm cranks	126mm 175 mm cranks	133.5mm 175 mm cranks
Pedal Spindle to Ground Clearance	82mm 165 mm cranks	101mm 165 mm cranks	96mm 170 mm cranks	98mm 170 mm cranks	95.5mm 172.5 mm cranks	97.5mm 172.5 mm cranks	95mm 175 mm cranks	95mm 175 mm cranks

	48CM	50CM	52CM	54CM	56CM	58CM	60CM	62CM
Wheel Size	650B/27.5 in 584 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	32mm	32mm	32mm	32mm	32mm	32mm	32mm	32mm
Tire Width Max	45mm	45mm	45mm	45mm	45mm	45mm	45mm	45mm
Tire Outer Diameter	648mm	686mm	686mm	686mm	686mm	686mm	686mm	686mm
Bike Length with Tires	1661mm	1704.5mm	1716mm	1726mm	1730mm	1743.5mm	1754.6mm	1762mm
Crank Length	165mm	165mm	170mm	170mm	172.5mm	172.5mm	175mm	175mm
Stem Length	70mm	80mm	90mm	90mm	100mm	100mm	110mm	110mm

Very Upright

Somewhat Upright

Average

Somewhat Aggressive

Very Aggressive

The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.

Learn more about the Upright/Aggressive Scale

Category Trend

All-road/Gravel

Source:https://masoncycles.cc/products/bokehti-frameset

Suggest Bike Edit

2025 Mason Cycles Bokeh TI Base

Geometry

Base Build

Stack and Reach vs. Category Trend