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Geometry and frame size

Perfection is our goal when developing bikes and bike components. To ensure that THE SUPERFAST fits you perfectly, we help you find the optimal frame height.

The geometry

Geometry is the sum of many small details. Only when everything works together perfectly does a bike have balanced riding characteristics. We have meticulously developed the geometry of THE SUPERFAST. It is designed to give the bike an agile yet comfortable character. Various parameters are important here. Some are also decisive for the choice of frame size.

REACH:

The reach is an important value for the riding characteristics and the seating position. It determines how compact or stretched out you sit. The higher the reach value, the more stretched out you sit. The ideal is the perfect ratio. In other words, a sporty but not stretched seating position. This allows you to ride long distances comfortably. The top tube length is one factor. Fine adjustments can be made using the length of the stem.
However, the seating position also depends on the stack value.

STACK:

This value indicates how high the handlebars are positioned. High stack = high handlebars. Low stack = low handlebars. Even if the reach is high, a large stack value can counteract a stretched position. The reverse is also true. Bikes with a low handlebar position can be comfortable if the distance between the rider and the handlebars (reach) is short. It is the interaction between reach and stack that determines the seating position.

SEAT HEIGHT:

Seat height and seat tube length must be in perfect proportion. With THE SUPERFAST, however, this value also influences the seat post that is required. The clamping area of our Bike Ahead seat posts has a no-slip application (NSA) and is reinforced. The seat post must be extended within this area. That is why we offer different lengths to choose from. You can find the perfect model for you with the help of our size calculator.

Size chart

The chart is for general guidance only and shows the size range. Everyone is different. Some people have longer legs in relation to their upper body, while others have the opposite. This can affect the frame height required. With our size calculator, you can determine the frame height and the optimal cockpit values exactly.

Size calculator

Our size calculator tells you which frame height is right for you. And which cockpit dimensions are optimal. This is how you determine the input values for the frame size tool.

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cm
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Größe: S
  • Sattelstütze:
  • Vorbau:
  • Lenkerbreite:
  • höhe Spacerturm:
Größe: M
  • Sattelstütze:
  • Vorbau:
  • Lenkerbreite:
  • höhe Spacerturm:
Größe: L
  • Sattelstütze:
  • Vorbau:
  • Lenkerbreite:
  • höhe Spacerturm:
Größe: XL
  • Sattelstütze:
  • Vorbau:
  • Lenkerbreite:
  • höhe Spacerturm:

*Can't find your size? Need help choosing your frame size? Get in touch with us, we'll be happy to help:

Body height:

Stand barefoot with your back against a wall and measure the distance from the floor to the highest point of your head. It is important that you stand upright.

Inseam:

Stand barefoot with your back to a wall and place a book or spirit level between your legs as if it were a saddle. The distance from the floor to the edge of the book is your inseam.

Shoulder width:

Measure the distance between your shoulder joints (center to center). This is your shoulder width.

Seat height:

The distance from the center of the bottom bracket to the saddle surface is the seat height.

Reach to bar:

First, define and mark the center of the handlebars. Then place the bike with the front wheel against a wall. Measure the distance from the wall to the bottom bracket (A) and from the wall to the center of the handlebars (B). The distance from the center of the handlebars to the bottom bracket (A minus B) is the reach to bar.

Stack to bar:

Measure the distance from the center of the handlebars to the floor (C) and from the bottom bracket to the floor (D). The distance between the center of the handlebars and the bottom bracket (C minus D) is the stack to bar.

Overview of geometry tables

THE SUPERFAST Geometry

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