AUTHOR Aura 55 Disc 2016 - triple butted alloy frame

Road bike Author Aura 55 disc is built on an alloy frame with triple butted tubes and carbon fork. Highest alloy road is a hot new for 2016! From her colleague Aura 55 differs primarily by the presence of disc hydraulic brakes, which precisely gives out braking power and the bike is so easy to handle. Apart from highly developed frame´s structural elements Aura offers – new twenty-two speed components set Shimano 105, compact chain wheel, wheel set MAVIC Aksium Elite, kevlar tires or carbon seatpost. Road machine for very demanding riders who prefer alloy.

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2016 2017 2018

Technical specification

Size	480, 500, 520, 540, 560, 580 mm
Frame	triple butted alloy 6061
Front fork	AUTHOR alloy 1.5" tapered
Head parts	PRESTINE Integrated 1.5" tapered
Chain Wheel	FSA Gossamer Compact MegaExo 50-34 teeth 170 / 172.5 / 175 mm cranks
BBParts	SHIMANO 105 BB unit
Front derailleur	SHIMANO 105 (31.8)
Rear derailleur	SHIMANO 105
Shifters	SHIMANO 105 (22)
Free wheel	SHIMANO CS-5800 11-28 (11)
Chain	SHIMANO HG600
Hubs	MAVIC Aksium Disc wheel set 24 / 24 holes
Brakes	SHIMANO RS505 disc hydraulic (140 mm rotors)

Brakes levers	SHIMANO RS505
Wheel set	MAVIC Aksium Disc 24 / 24 holes
Spokes	MAVIC
Tires	VITTORIA Zaffiro Pro kevlar 700 x 25c
Handlebar	RITCHEY Streem II Comp Road 420 / 440 mm
Tapes	AUTHOR microfiber / gel
Stem	RITCHEY Comp 4-Axis
Seat post	RITCHEY Comp Carbon (27.2)
Seat clamp	AUTHOR (31.8)
Saddle	AUTHOR Aura
Speed	22
Weight	9.3kg / 54cm

Geometry and sizes

Size	480	500	520	540	560	580
Min. figure ~~[cm]~~	154	160	168	176	186	193
Max. figure ~~[cm]~~	162	170	178	188	195	202
S/T c-t ~~[mm]~~	480	500	520	540	560	580
S/T c-c ~~[mm]~~	440	460	480	500	520	540
T/T h ~~[mm]~~	525	532	542	556	570	583
T/T a ~~[mm]~~	512	519	529	543	556	570
H/T ~~[mm]~~	125	140	155	170	185	200
C/S ~~[mm]~~	425	425	425	425	425	425
W/B ~~[mm]~~	998	1000	1005	1014	1021	1029
S/T ang. ~~[°]~~	74.5	74.2	74	73.7	73.3	73
H/T ang. ~~[°]~~	71.5	71.8	72.2	72.5	72.8	73
F/L ~~[mm]~~	373	373	373	373	373	373
B/B drop ~~[mm]~~	72	71	70	70	69	68
B/B width ~~[mm]~~	68	68	68	68	68	68
Reach ~~[mm]~~	0	0	0	0	0	0
Stack ~~[mm]~~	0	0	0	0	0	0
F/R ~~[mm]~~	45	45	45	45	45	45
Handlebars ~~[mm]~~	0	0	0	0	0	0
Stem ~~[mm]~~	0	0	0	0	0	0
Cranks ~~[mm]~~	0	0	0	0	0	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