Powered by Smartsupp
Buyer's guides
Find a dealer
en
Ultrasonic 27,5 2025-26
  » Bicycles » junior » junior 27.5
  » Bicycles » ladies » mtb 27.5
  » Bicycles » mountain bike » mtb 27.5

Ultrasonic 27,5 2025-26

Colour variants
Wheel size 27,5"Recommended for height 140-170 cm, frame size 14" / 16"Weight 12,5 kgNew alloy hydroformed frame, single chainring with 32t., 165/ 170 mm shorter cranksRST air fork, TEKTRO hydraulic disc brakesSHIMANO CUES components, 11 speedHow to choose a bike
Buy nowspecial price 20 990 Kč
original price  33 990 Kč 
Add to compareadditional accessories
other models
Traction23 990Traction ASL22 990Kinetic20 990Kinetic ASL20 990Ultrasonic 27,520 990Sonic 27,519 990A-Matrix 27,5D14 990Limit 27,512 990
Interested in other model`s year?

Technical specification

Size14", 16"
Frametriple butted hydroformed alloy 6061 27.5"
Front forkRST F1RST 27.5, air, lock out (80 mm)
Head partsPRESTINE Integrated, 1.5" tapered
Chain WheelPROWHEEL, 32 teeth, 165 / 170 mm cranks
BBPartsPROWHEEL, BB unit
Rear derailleurSHIMANO Cues 6000
ShiftersSHIMANO Cues 6000 (11)
Free wheelSHIMANO CS-LG400-11, 11-50 (11)
ChainKMC XGlide
HubsAUTHOR Xenon, 32 holes
BrakesTEKTRO HD-M530, disc hydraulic (6" rotors)
Brakes leversTEKTRO HD-M530
RimsAUTHOR Xenon TRC 27.5, 32 holes
Spokesblack stainless steel 2.0 mm
TiresCST B-Trail, aramid, 27.5" × 2.25"
Pedalsplastic
HandlebarAUTHOR Flat Top bar, 9°, 620 / 640 mm
Grips/Bar tapesAUTHOR kratton rubber
StemAUTHOR alloy
Seat postAUTHOR alloy (31.6)
Seat clampAUTHOR (34.9)
SaddleAUTHOR Champion / 14", AUTHOR Navigator / 16"
Speed11
Weight12,5 kg / 14"

Geometry and sizes

Size 14" 16"
Min. figure [cm] 140 155
Max. figure [cm] 158 170
S/T c-t [mm] 356 406
S/T c-c [mm] 0 0
T/T h [mm] 550 575
T/T a [mm] 544 557
H/T [mm] 110 115
C/S [mm] 420 420
W/B [mm] 1052 1067
S/T ang. [°] 74 73.5
H/T ang. [°] 69 69.5
F/L [mm] 475 475
B/B drop [mm] 45 45
B/B width [mm] 73 73
Reach [mm] 385 403
Stack [mm] 575 582
F/R [mm] 43 43
Handlebars [mm] 0 0
Stem [mm] 0 0
Cranks [mm] 0 0
maxmin
silueta
Choose the height of the character by moving the pointer on the scale.
Ultrasonic 27,5 2025-26

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 variantSizeIn storesPurchaseCityContacts on sellerModel code
14"16 stores4295510026
 ▪   Bike Servis FRODLorderorder nowČáslav603 510 347, mpbike@seznam.czmap
 ▪   SPORT CYKLO s.r.o.orderorder nowHolešov603 373 886, sportcyklo@gmail.commap
 ▪   Bifu Luhačovice Stanislav Duháňin stockbuy nowLuhačovice773 981 111, obchod@bifu.czmap
 ▪   CYKLOSPORT H&Forderorder nowOpava 1777 330 072, info@cyklosporthf.czmap
 ▪   Kola Pešekorderorder nowPardubice - Staré Čívice733 706 797, info@kolapesek.czmap
 ▪   Ramala s.r.o.orderorder nowPlzeň377 322 435, plzen@ramala.czmap
 ▪   KOLA ŠILHAVÝ s.r.o.in stockbuy nowPlzeň602 495 439, silhavy@silhavy-ramala.czmap
 ▪   Štěrba BIKEin stockbuy nowPraha 4241 741 961, info@sterbabike.czmap
 ▪   Velo Fialaorderorder nowPraha 6725 729 111, tomas@velofiala.czmap
 ▪   CykloCentrum ESHOPorderorder nowPraha 7725 085 309, info@cyklocentrum.czmap
 ▪   CykloCentrum Praha Holešovicein stockbuy nowPraha 7725 085 309, holesovice@cyklocentrum.czmap
 ▪   Viaveloorderorder nowPraha 8 - Kobylisy775 657 711, viavelo@viavelo.czmap
 ▪   Sedláček s.r.o. orderorder nowPříbram 1318 621 473, info@cyklosport-sedlacek.czmap
 ▪   Jízdní kola Rezek - Rezkováorderorder nowRakovník313 517 417, jizdnikola.rezek@tiscali.czmap
 ▪   Pavel Brabecin stockbuy nowRumburk602 112 875, brabec.pavel@gmail.commap
 ▪   CSM Cyklo Sport Mikšíkorderorder nowVrchlabí604 628 498, csm@centrum.czmap
⟲  In other storesin 2 daysdealers
16"15 stores4295510126
 ▪   Bike Servis FRODLorderorder nowČáslav603 510 347, mpbike@seznam.czmap
 ▪   SPORT CYKLO s.r.o.orderorder nowHolešov603 373 886, sportcyklo@gmail.commap
 ▪   AXIT bike sportin stockbuy nowNáchod491 426 020, axit@axit.czmap
 ▪   CYKLOSPORT H&Forderorder nowOpava 1777 330 072, info@cyklosporthf.czmap
 ▪   Kola Pešekorderorder nowPardubice - Staré Čívice733 706 797, info@kolapesek.czmap
 ▪   Ramala s.r.o.orderorder nowPlzeň377 322 435, plzen@ramala.czmap
 ▪   KOLA ŠILHAVÝ s.r.o.in stockbuy nowPlzeň602 495 439, silhavy@silhavy-ramala.czmap
 ▪   Štěrba BIKEin stockbuy nowPraha 4241 741 961, info@sterbabike.czmap
 ▪   Velo Fialaorderorder nowPraha 6725 729 111, tomas@velofiala.czmap
 ▪   CykloCentrum ESHOPorderorder nowPraha 7725 085 309, info@cyklocentrum.czmap
 ▪   Viaveloorderorder nowPraha 8 - Kobylisy775 657 711, viavelo@viavelo.czmap
 ▪   Sedláček s.r.o. orderorder nowPříbram 1318 621 473, info@cyklosport-sedlacek.czmap
 ▪   Jízdní kola Rezek - Rezkováorderorder nowRakovník313 517 417, jizdnikola.rezek@tiscali.czmap
 ▪   Pavel Brabecin stockbuy nowRumburk602 112 875, brabec.pavel@gmail.commap
 ▪   CSM Cyklo Sport Mikšíkorderorder nowVrchlabí604 628 498, csm@centrum.czmap
⟲  In other storesin 2 daysdealers
Poznámka: Stav dostupnosti kola se aktualizuje 1× denně v ranních hodinách.

Product options

black-matt / red14" = UA#4295510026   16" = UA#4295510126

additional accessories

AUTHOR Bottle cage ABC-60
with bottle
1/2
150 Kč 225 Kč ABC-60AUTHOR FLY 33 One-Piece Gloss Bottle Cage is made of durable glass fibre-reinforced polyamide and is ... more »
AUTHOR Bottle cage ABC-L&R05
side
1/2
170 Kč 199 Kč LR-05Bottle cage AUTHOR ABC-L&R05 designed for easy bottle removing from side direction. It is lightweigh ... more »
AUTHOR Bottle cage ACP-X26 Karbon
AUTHOR Bottle cage ACP-X26 Karbon
AUTHOR Bottle cage ACP-X26 Karbon
AUTHOR Bottle cage ACP-X26 Karbon
foto 1
foto 2
front
front
front
front
1/10
450 Kč 595 Kč X26 CarbonCreated using AUTHOR X26 Carbon - tech construction is superbly strong and incredibly light. Elegant ... more »
AUTHOR Hand pump AAP Fatty X23 AL/Composite
foto 1
foto 2
foto 3
1/4
350 KčFatty X23 AL/CompositeAlloy • 120 psi • 129 g • The AUTHOR Fatty X23 AL mini pump provides fast and simple tire inflation with a maximum pressure of ... more »
AUTHOR Stand AKS-570 R18
450 Kč 475 Kč AKS-570 R18Lightweight and high performing kick Stand Author for frame dropout fixation AUTHOR IS-R18. For whee ... more »
AUTHOR Mudguard rear X-Bow
adjusting
assembly
top
back
1/5
299 KčX-BowRear mudguard AUTHOR, modern shorter mudguards with universal bracket, fabric plastic. Weight 163g. more »
AUTHOR Mudguard front X-Bow QR
adapters
foto 1
1/3
299 Kč 350 Kč X-Bow QRMudguard Author X-BOW QR  with aerodynamic flow design is perfect for XC ride. Fits suspension or ... more »
About us
Instagram
Facebook
YouTube
Pinterest
Find a dealer
Archive of models
Price = recommended retail price including VAT.   The suggested retail price (MOC) is for informational purposes only.   The amount of sales prices is determined by individual sellers.
Copyright © 2013 - 2026   UNIVERSE AGENCY spol.s r.o.   info@author.czDeclarations | ManualsGDPRSitemapCookiesRSS