Ultrasonic 24 2025

~~Colour variants~~

Wheel size 24"Recommended for height 125-140 cmWeight 9,8 kgNew alloy hydroformed frame, single chainring with 32t., 150 mm short kids cranksAlloy light fork, cassette 11-40t.Lightweight KENDA Small Block Eight tire 24" × 1.95"SHIMANO Acera components, 8 speed

~~Buy now~~price 17 990 Kč

# 12"# black # green # red

other models

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2018 2019 2020 2021-22 2023-24 2025

Technical specification

Size	12"
Frame	triple butted hydroformed alloy 6061 24"
Front fork	alloy 6061 24"
Head parts	PRESTINE Integrated, 1.5" tapered
Chain Wheel	PROWHEEL Boom, 32 teeth, 140 mm cranks
BBParts	VP COMP, cartridge
Rear derailleur	SHIMANO Acera
Shifters	SHIMANO Acera (8)
Free wheel	SHIMANO CS-HG400-8, 11-40 (8)
Chain	KMC Z8.3
Hubs	QUANDO, 24 holes
Brakes	TEKTRO V

Brakes levers	TEKTRO alloy
Rims	alloy, 24 holes
Spokes	black stainless steel 2.0 mm
Tires	KENDA Small Block Eight, aramid, 24" × 1.95"
Pedals	plastic
Handlebar	AUTHOR Flat Top bar, 0 mm, 600 mm
Stem	AUTHOR alloy
Seat post	AUTHOR alloy (31.6)
Seat clamp	AUTHOR (34.9)
Saddle	AUTHOR Champion
Speed	8

Geometry and sizes

Size	12"
Min. figure ~~[cm]~~	125
Max. figure ~~[cm]~~	140
S/T c-t ~~[mm]~~	305
S/T c-c ~~[mm]~~	0
T/T h ~~[mm]~~	500
T/T a ~~[mm]~~	484
H/T ~~[mm]~~	110
C/S ~~[mm]~~	400
W/B ~~[mm]~~	965
S/T ang. ~~[°]~~	73
H/T ang. ~~[°]~~	70
F/L ~~[mm]~~	372
B/B drop ~~[mm]~~	25
B/B width ~~[mm]~~	68
Reach ~~[mm]~~	359
Stack ~~[mm]~~	463
F/R ~~[mm]~~	45
Handlebars ~~[mm]~~	0
Stem ~~[mm]~~	0
Cranks ~~[mm]~~	0

maxmin

~~Choose the height of the character by moving the pointer on the scale.~~

The recommended size and stature are just indicative. It is recommended to always consult your choice with the dealer.

S/T c-t - seat tube (center-top), length of the seat tube from the middle of BB parts to its peak
S/T c-c - seat tube (center-center), length of the seat tube from the middle of BB parts to an axle of the upper tube
T/T h - top tube horizontal, horizontal lenght of the upper tube
T/T a - top tube actual, real lenght of the upper tube
H/T - head tube, head tube lenght
C/S - chain stay, chain brace lenght
W/B - wheel base, wheelbase (front and rear axle lenght)
S/T ang. - seat tube angel, angle between the seat tube axis and an imaginary line connecting the axes of the front and rear wheel
H/T ang. - head tube angel, angle between the head tube axis and an imaginary line connecting axes of the front and rear wheels
F/L - fork length, fork length from the head parts bottom to the middle of the front wheel
B/B drop - bottom bracked drop, lenght between an imaginary line connecting wheels centers and BB parts, measured from BB parts
F/R - fork rake, distances between the head tube axis and fork axis measured at center of the front wheel, so-called. off set

Product options

red / black / lime

12" = UA#42954801