Aura XR4 2023-24

~~Colour variants~~

Tripple butted alloy frame with Inner Cable Routing, full carbon forkFull lightweight carbon forkFSA Gossamer Pro chainwheel, 46-30 t., 20 speedSHIMANO GRX 400 / Tiagra, components, 20 speedPANARACER Gravel King SK SPORT 700 × 40c tiresPROMAX ergoshaped gravel handlebarsAUTHOR Guru gravel saddle

Technical specification

Size	500, 520, 540, 560, 580 mm
Frame	triple butted alloy 6061
Front fork	AUTHOR carbon 1.5" tapered
Head parts	PRESTINE Integrated 1.5" tapered
Chain Wheel	FSA Gossamer Pro, 46-30 teeth, 172.5 / 175 mm cranks
BBParts	FSA BB-6000, BB unit
Front derailleur	SHIMANO GRX 400
Rear derailleur	SHIMANO Tiagra (20)
Shifters	SHIMANO GRX 400 (20)
Free wheel	SHIMANO HG500-10, 11-34 (10)
Chain	KMC X10
Hubs	QUANDO Road Disc, 12 × 100 mm thru front axle, 32 holes
Brakes	SHIMANO RS305, kotoučové mechanické (160 mm kotouče)

Brakes levers	SHIMANO Tiagra
Rims	JALCO SRD 21, 32 holes
Spokes	black stainless steel 2.0 mm
Tires	PANARACER Gravel King SK Sport 700 × 40c
Handlebar	PROMAX 420 / 440 / 460 mm
Tapes	AUTHOR suede / gel
Stem	AUTHOR alloy
Seat post	AUTHOR alloy (27.2)
Seat clamp	AUTHOR (31.8)
Saddle	AUTHOR Guru
Speed	20
Weight	10,6 kg / 54 cm

Geometry and sizes

Size	500	520	540	560	580
Min. figure ~~[cm]~~	160	168	176	183	190
Max. figure ~~[cm]~~	170	178	185	193	205
S/T c-t ~~[mm]~~	500	520	540	560	580
S/T c-c ~~[mm]~~	460	480	500	520	540
T/T h ~~[mm]~~	530	545	560	580	595
T/T a ~~[mm]~~	518	532	546	563	576
H/T ~~[mm]~~	120	140	160	180	200
C/S ~~[mm]~~	425	425	425	425	425
W/B ~~[mm]~~	1014	1020	1031	1042	1046
S/T ang. ~~[°]~~	74.5	74	73.5	73	72.5
H/T ang. ~~[°]~~	70.5	71	71	71.5	72
F/L ~~[mm]~~	400	400	400	400	400
B/B drop ~~[mm]~~	70	70	69	68	68
B/B width ~~[mm]~~	0	0	0	0	0
Reach ~~[mm]~~	378	382	386	395	397
Stack ~~[mm]~~	548	568	586	606	627
F/R ~~[mm]~~	45	45	45	45	45
Handlebars ~~[mm]~~	0	0	0	0	0
Stem ~~[mm]~~	0	0	0	0	0
Cranks ~~[mm]~~	0	0	0	0	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

additional accessories

1/15

PRO33 g • The AUTHOR PRO Bottle Cage is light, designed for easy bottle entry / removal on the go. Great to ... more »

1/11

X26 KarbonCreated using AUTHOR X26 Carbon - tech construction is superbly strong and incredibly light. Elegant ... more »

1/9

R255 Tank Bag MPPThe AUTHOR Tank Bag MPP ensures your camera is at hand in any situation. It provides easy, hassle-fr ... more »

1/6

R260 ProLongThe Author saddle bag A-R260 ProLong is the universal bag with the one main compartment and one flat ... more »

1/4

R270The Author saddle bag A-R270 16" is the universal bag with the one main compartment and one flat poc ... more »

1/6

S3152 SuMo X9 The AUTHOR SuMo big seat bag for big trips. Take it on the every route - easy strong fixation for ... more »

1/3

BoosterMini Pump Author Booster. Changeable head allows usage with all type of valves (AV, FV, DV). Fixa ... more »

1/2

AKS-530 RSAlloy kick stand designed for direct rear fork down tube fixation (tube profile 22 - 25mm), recomend ... more »

1/9

QUANTUM 700 lm USBCREE XML2 LED 700 lm • USB • IndicatorThe Author Quantum 700 lm is a USB rechargeable headlight with a massive 700 lumens output. This lig ... more »

AUTHOR Flashing light A-Square USB CobLed 100 lm

1/5

Square CobLed 100 lm USBCOB LED 100 lm • Alloy case • Battery indicatorThe AUTHOR SQUARE features superior visibility with hi-end COB LED technology, providing a new leve ... more »

1/3

ACR-16-AluA tough rear rack AUTHOR ACR-16-Alu. Equipped with adjustable legs to fit most 24” to 29” wheel ... more »

1/2

AXP-810-UniRear mudguard AUTHOR, for seat post tube mounting, easy insertion/ slide out, fabric plastic. For si ... more »

1/5

X-Bow CrossThe mudguard AUTHOR X-Bow Cross with fast and easy clipping system on seat tube will make the lazies ... more »

1/2

X-Flap SeatThe mudguard AUTHOR X-Flap with fast and easy clipping system on saddle rails will make the laziest ... more »

1/6

ACR-F05-AluALLOY • 163 g • The AUTHOR CARGO F05 is the perfect combination of bottle cage and bicycle rack. Designed to carry b ... more »

1/5

ACR-F14-AluA tough tubular aluminium front rack. Designed specifically for front suspension fork with brake piv ... more »

X-Mudy CrossFront mudguard AUTHOR, for down tube mounting, fabric plastic. more »

Aura XR4 2023-24

Technical specification

Geometry and sizes

Product options

additional accessories