2021 Nukeproof Giga 290 29" Front and Rear, 591mm axle to crown.

	Small	Medium	Large	X-Large	XX-Large
Stack	622.3mm	622.3mm	631.3mm	640.2mm	649.2mm
Reach	430mm	455mm	475mm	495mm	515mm
Stack to Reach Ratio	1.45:1	1.37:1	1.33:1	1.29:1	1.26:1
Seat Tube Length, C-T	380mm	410mm	440mm	460mm	480mm
Top Tube Length, Effective/Horizontal Center	565.1mm	590.1mm	609.2mm	631.1mm	653mm
Head Tube Angle	63.5deg	63.5deg	63.5deg	63.5deg	63.5deg
Effective Seat Tube Angle, Seat Tube Top	77.75deg	77.75deg	78deg	78deg	78deg
Head Tube Length	100mm	100mm	110mm	120mm	130mm
Bottom Bracket Drop	25mm	25mm	25mm	25mm	25mm
Bottom Bracket Height	347mm	347mm	347mm	347mm	347mm
Chainstay Length	445mm	445mm	445mm	445mm	445mm
Chainstay Length Horizontal	444.3mm	444.3mm	444.3mm	444.3mm	444.3mm
Front-Center	768mm	793mm	817.4mm	841.8mm	866.2mm
Front-Center Horizontal	772mm	797mm	821.4mm	845.7mm	870.1mm
Wheelbase	1216.3mm	1241.3mm	1265.7mm	1290mm	1314.4mm
Fork Offset/Rake	42mm	42mm	42mm	42mm	42mm
Fork Length (Axle-To-Crown)	591mm	591mm	591mm	591mm	591mm
Trail	138.5mm very high	138.5mm very high	138.5mm very high	138.5mm very high	138.5mm very high
Mechanical Trail	124mm	124mm	124mm	124mm	124mm
Wheel Flop	55.3mm	55.3mm	55.3mm	55.3mm	55.3mm
Standover Height	702.6mm	710.1mm	729.9mm	734.5mm	750.6mm
Tire to Pedal Spindle	226.1mm 170 mm cranks	251.1mm 170 mm cranks	275.5mm 170 mm cranks	299.8mm 170 mm cranks	324.2mm 170 mm cranks
Pedal Spindle to Ground Clearance	177mm 170 mm cranks	177mm 170 mm cranks	177mm 170 mm cranks	177mm 170 mm cranks	177mm 170 mm cranks

Published Sizing Recommendations

Height

159 cm

169 cm

167 cm

177 cm

175 cm

185 cm

183 cm

193 cm

191 cm

201 cm

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.

Category Trend

Source:https://nukeproof.com/pages/geometry-giga-290