Ultrasonic 24 2025

~~Colour variants~~

Wheel size 24"Recommended for height 125-140 cmWeight 9,7 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

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
Weight	9,7 kg / 12"

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

Availability

	Colour variant	Size	In stores	Purchase	City	Contacts on seller	Model code
		12"	13 stores				42954801
	▪ CykloCentrum Brno		in stock	buy now	Brno	702 144 752, brno@cyklocentrum.cz	map
	▪ Bike Servis FRODL		order	order now	Čáslav	603 510 347, mpbike@seznam.cz	map
	▪ SPORT CYKLO s.r.o.		order	order now	Holešov	603 373 886, sportcyklo@gmail.com	map
	▪ CYKLOSPORT H&F		order	order now	Opava 1	777 330 072, info@cyklosporthf.cz	map
	▪ Kola Pešek		order	order now	Pardubice - Staré Čívice	733 706 797, info@kolapesek.cz	map
	▪ KOLA ŠILHAVÝ s.r.o.		order	order now	Plzeň	602 495 439, silhavy@silhavy-ramala.cz	map
	▪ Ramala s.r.o.		order	order now	Plzeň	377 322 435, plzen@ramala.cz	map
	▪ Štěrba BIKE		in stock	buy now	Praha 4	241 741 961, info@sterbabike.cz	map
	▪ CYKLO ADAM s.r.o.		in stock	buy now	Praha 6	775 085 151, info@cykloadam.cz	map
	▪ CykloCentrum ESHOP		order	order now	Praha 7	725 085 309, info@cyklocentrum.cz	map
	▪ Jízdní kola Rezek - Rezková		order	order now	Rakovník	313 517 417, jizdnikola.rezek@tiscali.cz	map
	▪ Pavel Brabec		in stock	buy now	Rumburk	602 112 875, brabec.pavel@gmail.com	map
	▪ Flystork		order	order now	Třebíč	530 513 203, obchod@flystork.cz	map
	⟲ In other stores		in 2 days				dealers
Poznámka: Stav dostupnosti kola se aktualizuje 1× denně v ranních hodinách.

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Ultrasonic 24 2025

Technical specification

Geometry and sizes

Availability

Product options

additional accessories