Isoforce 651

The Isoforce 651 is also a racket in the category all-round-power. The long shaft provides maximum power and utmost speed. With Galaxy black string.

two piece

Shaft and frame are manufactured in two separate high-tech production processes, ensuring exact control of shaft flexibility and frame stiffness

carb 4

High modulus 30t graphite for high shaft momentum

balance mid

Centre of balance is close to the middle of the racket for allround balanced feel

flex mid

Mid-stiff shaft for the controlled allround play

power waves

The wave-like shapes each right and left of the outside frame minimize the frictional string resistance where the string passes through the grommets in the frame and reduce the strain on the string. The resulting more elastic string bed provides a higher transfer of energy through the increased trampoline effect and maximizes ball acceleration by approx. 5%.

air flex

A short flexible PE ferrule allows the shaft to swing more flexibly where strokes are being played over a long distance. The incrased leverage provides powerful strokes.

slim shaft

New slim shaft with approx. 0,5mm reduced diameter for supra-light racket weight and reduced air resistance, resulting in top handling and increased speed.

long shaft

Special, by 1cm longer shaft which is more bouncy once the shuttle is in contact with the string and which therefore provides maximum power and utmost speed.


Tolerance of weight incl. strings max. +/-3 grams


Tolerance of weight excl. strings max. +/-3 grams


Maximum recommended string tension