2025 SPIRO MITICA DISC Base

	XS	S	M	L
Stack	548mm	559mm	572mm	591mm
Reach	361mm	369mm	378mm	383mm
Stack to Reach Ratio	1.52:1	1.51:1	1.51:1	1.54:1
Seat Tube Length, C-T	440mm	470mm	500mm	530mm
Top Tube Length, Effective/Horizontal HT Top	508mm	524mm	547mm	558mm
Top Tube Slope	14.5deg	12.1deg	10.1deg	8.8deg
Head Tube Angle	70deg	70.5deg	71deg	71.5deg
Seat Tube Angle	74.5deg	74.5deg	73.5deg	73.5deg
Head Tube Length	120mm	130mm	145mm	160mm
Bottom Bracket Drop	66.8mm	66.8mm	66.8mm	66.8mm
Bottom Bracket Height	276.2mm	276.2mm	276.2mm	276.2mm
Chainstay Length	425mm	425mm	425mm	425mm
Chainstay Length Horizontal	419.7mm	419.7mm	419.7mm	419.7mm
Front-Center	588.1mm	600.2mm	608.4mm	614.9mm
Front-Center Horizontal	584.3mm	596.5mm	604.7mm	611.3mm
Wheelbase	1004mm	1016.2mm	1024.4mm	1031mm
Fork Offset/Rake	50mm	50mm	50mm	50mm
Fork Length, Unknown	410mm	410mm	410mm	410mm
Trail	71.6mm high	68.4mm high	65.2mm high	62mm mid/neutral
Mechanical Trail	67.3mm	64.5mm	61.7mm	58.8mm
Wheel Flop	23mm	21.5mm	20.1mm	18.7mm
Tire to Pedal Spindle	75.1mm 170 mm cranks	87.2mm 170 mm cranks	95.4mm 170 mm cranks	101.9mm 170 mm cranks
Pedal Spindle to Ground Clearance	106.2mm 170 mm cranks	106.2mm 170 mm cranks	106.2mm 170 mm cranks	106.2mm 170 mm cranks

Published Sizing Recommendations

Height

155 cm

164 cm

165 cm

172 cm

173 cm

180 cm

185 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://cdn.shopify.com/s/files/1/0527/0991/6846/files/Ficha-Geometria-Mitica-Disc.jpg?v=1739491733