Home / BIKE GEOMETRY
Our bikes are designed to fit riders ranging in height from 5’ to 6’4”, using 3 distinct frame sizes, and contact points tailored to each individual frame size. Our custom bike builder asks for 3 simple body dimensions to calculate your ideal custom bike fit.
If you don't have a tape measure handy, or are buying a bike as a gift for someone else, you are still able to skip this step in the bike builder, and select a size based on the recommendation below. When you place your order, our team will follow up with you to discuss your fit, and confirm all the information we need before we build your new bike.

Detailed Dimensions Size 1 Size 2 Size 3
Rider Height (feet) 5'0" - 5'5" 5'6" - 5'11" 6'0" - 6'4"
Rider Height (cm) 152 - 165cm 167 - 180cm 182 - 193cm
Head Tube Angle 70.5° 71.0° 71.0°
Seat Tube Angle 72.0° 71.5° 71.0°
Top-Tube Length 580mm 600mm 620mm
Seat-Tube Length 430mm 485mm 540mm
Chain-Stay Length 450mm 450mm 450mm
Bottom Bracket Drop 60mm 60mm 60mm
Fork Rake 45mm 45mm 45mm
Fork Length 405mm 405mm 405mm
Head-Tube Length 145mm 170mm 195mm
Stand Over Height 710mm 755mm 795mm
Wheel Base 1067mm 1077mm 1093mm
Please consider that our frame geometries are also designed for the reach from saddle to handle bars to ‘grow’ as the saddle is raised. If you find yourself on the border between sizes, our recommendation is to size down for a more nimble, maneuverable feel to your ride. Or size up for a taller handle bar position and roomier cockpit. 

If you are still unsure of your size, please drop us a line at hello@rollbicycles.com and we’ll help!