Are you looking for the best in its category? Author Ultrasonic 24 on a very light triple butted frame with so-called hydroforming technology, which guarantees perfect strength, durability and significant weight savings. Performance-oriented racing geometry, lightweight alloy fork, KENDA Kevlar tires and SHIMANO Alivio components
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Technical specification
| Size | 12" |
|---|
| Frame | triple butted hydroformed
alloy 6061 24" |
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| Front fork | alloy 6061 24" |
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| Head parts | PRESTINE Integrated
1.5" tapered |
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| Chain Wheel | LASCO,
32 teeth,
150 mm cranks |
|---|
| BBParts | VP COMP,
cartridge |
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| Rear derailleur | SHIMANO Alivio |
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| Shifters | SHIMANO Alivio (9) |
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| Free wheel | SHIMANO HG400-9,
11-36 (9) |
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| Chain | KMC Z9 |
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| Hubs | QUANDO,
24 holes |
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| Brakes | TEKTRO V |
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| Brakes levers | TEKTRO alloy |
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| Rims | alloy,
24 holes |
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| Spokes | black stainless steel 2.0 mm |
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| Tires | KENDA Small Block Eight aramid
24" × 1.95" |
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| Pedals | resin |
|---|
| Handlebar | AUTHOR Flat Top bar, rise
0 mm, 600 mm |
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| Grips | AUTHOR
kratton rubber |
|---|
| Stem | AUTHOR alloy |
|---|
| Seat post | AUTHOR alloy
(31.6) |
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| Seat clamp | AUTHOR (34.9) |
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| Saddle | AUTHOR Champion |
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| Speed | 9 |
|---|
| Weight | 9,8 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] | 482 |
|---|
H/T [mm] | 110 |
|---|
C/S [mm] | 400 |
|---|
W/B [mm] | 965 |
|---|
S/T ang. [°] | 73 |
|---|
H/T ang. [°] | 70 |
|---|
F/L [mm] | 372 |
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B/B drop [mm] | 25 |
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B/B width [mm] | 68 |
|---|
Reach [mm] | 0 |
|---|
Stack [mm] | 0 |
|---|
F/R [mm] | 45 |
|---|
Handlebars [mm] | 0 |
|---|
Stem [mm] | 0 |
|---|
Cranks [mm] | 0 |
|---|
max
min
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
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blue-matt / lime | 12" = UA#42943801 |
AUTHOR Stand AKS-500 RKick Stand Author for rear fork fixation.
Adjustable for wheel diameter 24"-29".
Material AL6061-T6.
Weight 379g.
AUTHOR Stand AKS-530 RSAlloy kick stand designed for direct rear fork down tube fixation (tube profile 22 - 25mm), recomended for bicycles with rear disk brake.
Adjustable ...
AUTHOR Saddle bag A-S381 TPN X7The Author saddle bag A-S381 is the easy bag with the one main compartment. Designed for long satisfied use, main parts from waterproofed fabric ...
AUTHOR Sadle bag A-S381 QF9 X7The Author saddle bag A-S381 is the easy bag with the Quick Fix 9 bracket for easy click ON/OFF and one main compartment. Designed for long satisfied ...