ROCKTOOL "the lightest one"

Superlight KIDS-BIKE from 7.9 kg

In 2026, we are launching the ROCKTOOL for our young riders, featuring 26" wheels and a 12-speed drivetrain. This fun and race-ready bike was developed by KOBA based on the RACETOOL 29" and specifically designed for children from around 130 cm in height. The ultra-light carbon frame and all components are perfectly adapted to young riders. This allows the KIDS Custom Made Bike to be configured and built with a total weight of just 7.9 kg. The perfectly tuned geometry ensures maximum riding fun both on climbs and steep downhills. Even without a motor (NO ENGINE), the ROCKTOOL delivers impressive performance thanks to its extremely low weight. Who wouldn’t want to be a child again?

ROCKTOOL "the lightest one"
Price CHF 4,010
Weight 7.9 kg

Configure custom bike with choosing different components in bottom panel

Frame geometry

> Frame Size 26"
> Body Size recommendation 125-155
A  Seat tube lenght 330
B  Top tube length 531
C  Seat tube angle 74.5°
D  Head angle 68°
E  Chainstay length 415
F  Wheelbase incl. H 1034
G  Bottom bracket height 57
H  Offset 40
I  Head tube length 85
J  Fork length 480
R Reach 374
S Stack 566

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