2025 KOSSEA PIONEER SL/SLR

	49cm(XS)	52cm(S)	54cm(M)	56cm(L)	58cm(XL)
Stack	514mm	527mm	547mm	568mm	592mm
Reach	373mm	378mm	384mm	392mm	404mm
Stack to Reach Ratio	1.38:1	1.39:1	1.42:1	1.45:1	1.47:1
Seat Tube Length, C-T	460mm	480mm	495mm	520mm	540mm
Top Tube Length, Effective/Horizontal HT Top	511mm	529mm	541mm	560mm	585mm
Top Tube Slope	8.1deg	7.3deg	7.8deg	7.3deg	7.7deg
Head Tube Angle	71.5deg	72.5deg	73deg	73.5deg	73.5deg
Seat Tube Angle	75deg	74deg	74deg	73.5deg	73deg
Head Tube Length	105mm	115mm	135mm	155mm	180mm
Bottom Bracket Drop	72mm	72mm	72mm	72mm	72mm
Bottom Bracket Height	267mm	267mm	267mm	267mm	267mm
Chainstay Length	406mm	406mm	406mm	410mm	410mm
Chainstay Length Horizontal	399.6mm	399.6mm	399.6mm	403.6mm	403.6mm
Front-Center	573mm	573mm	580.9mm	590.8mm	609.6mm
Front-Center Horizontal	573mm	573mm	581mm	590mm	609mm
Wheelbase	968mm	968mm	976mm	990mm	1009mm
Fork Offset/Rake	45mm	45mm	45mm	45mm	45mm
Trail	66mm high	59.7mm mid/neutral	56.6mm mid/neutral	53.5mm mid/neutral	53.5mm mid/neutral
Mechanical Trail	62.6mm	56.9mm	54.1mm	51.3mm	51.3mm
Wheel Flop	19.9mm	17.1mm	15.8mm	14.6mm	14.6mm
Tire to Pedal Spindle	64mm 170 mm cranks	64mm 170 mm cranks	71.9mm 170 mm cranks	81.8mm 170 mm cranks	100.6mm 170 mm cranks
Pedal Spindle to Ground Clearance	97mm 170 mm cranks	97mm 170 mm cranks	97mm 170 mm cranks	97mm 170 mm cranks	97mm 170 mm cranks

Published Sizing Recommendations

Height

156 cm

168 cm

165 cm

175 cm

172 cm

180 cm

178 cm

188 cm

185 cm

195 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:Unkown