Comas Joy 18" Kids Trial Bike

The Comas Joy 18” is the new kids' trial bike from Comas.
This bike was specially developed for our youngest riders.
During the conceptualization, particular emphasis was placed on robustness while maintaining a low weight.
The bike features an optimized aluminum frame, lightweight wheels, and reliable components.
The bike is suitable for children with a body height between 0.90m and 1.20m.
Particularly noteworthy is also the spectacular design in the colors blue and fluor-yellow with Comas graphics, which gives the bike a modern and sporty look.

Below you will find the specifications of the bike:

Frame:
- Made of high-quality aluminum 6061-T6 with optimized tube shapes, ideal for riders up to 1.20 m body height.

Fork:
- 18" trial fork for V-brakes with 1 1/8" steerer tube. Made of aluminum 6061-T6. Installation width 100 mm, compatible with most front hubs on the market.

Wheels:
- Front hub: Comas Entry 100 mm, 28 spokes, 9 mm threaded axle
- Rear hub: Comas Entry 116 mm, 32 spokes, 10 mm threaded axle, thread 1.37 x 24T
- Front rim: Comas 18”, 28 holes, single-walled, 32 mm wide, CNC-machined
- Rear rim: Comas 18”, 32 holes, single-walled, special width 47 mm, CNC-machined
- Spokes: Comas Ultralight 1.8 mm
- Spoke nipples: Aluminum
- Tires: 18” x 2.20

Brakes:
- Aluminum V-brakes L90 mm with two-finger brake levers

Drivetrain:
- Cranks: Comas JIS 130 mm, offset 33 mm, for threaded sprockets
- Bottom bracket: JIS, CrMo, sealed bearings, length 124.5 mm
- Freewheel: Comas 30.6, 16 teeth, red
- Chain: YBN S20, 1/2 x 3/32”
- Threaded sprocket: Comas 12T threaded sprocket made of aluminum 7075-T6, width 12 mm
- Pedals: Comas plastic pedals, thread 9/16”

Steering:
- Headset: Comas 1 1/8” Ahead
- Stem: Comas, 100 mm length with 25° rise
- Grips: Extra thin Comas foam grips with 2mm thickness
- Handlebar: Comas aluminum 7075-T6, 105 mm rise, 580 mm width

Geometry (with fork offset +45 mm):

- Wheelbase: 738 mm
- Chainstays: 275 mm
- Bottom bracket height: +25 mm
- Head angle: 72°