HOOK EXT TI

The versatile Hook EXT TI distils the rough-and-ready yet comfortable nature of the Hook collection. Light and responsive, the titanium frame partners alongside a V2 carbon fork with triple cage mounts, as well as a multitude of luggage configurations for added cargo options. Fitted with Shimano’s latest electronic GRX Di2 groupset, a double crankset provides close-ratios but a wide range. Making tubeless set-up easy, its lightweight WTB EZR rims and fast rolling WTB Ranger TCS Light tyres provide excellent speed and traction across mixed conditions.

This agile adventure bike is the perfect companion for technical backcountry raids.

HIGHLIGHTS

FRAME

Titanium 3Al-2.5V frame with T47 BB shell fender mounts and through axles.
FORK

Full carbon tapered fork with internal light cable routing, through axles and triple cage mounts.
CRANK

Shimano GRX 815 48 / 31 T crank.
DRIVETRAIN

Shimano GRX 815 Di2 2 x 11 groupset with hydraulic brakes.
TUBING

Ovalized toptube for supreme steering precision and comfort.
DERAILLEUR HANGER

Sram UDH derailleur hanger.

Item 1 of 6

TITANIUM / GREY BLUE

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Pictures and videos show custom build frameset, standard production complete bike will vary in spec and wheelsize.

SPECIFICATIONS
BUILD INFOS
GEOMETRY

Model	HOOK EXT TI
Color 1	Titanium / Grey Blue
Color 2	-
Frame	Titanium 3Al-2.5V, TA, rack / fender mounts, UDH derailleur hanger
Fork	Full carbon, TA, 1.1/2'' - 1.1/8'', triple cage mounts (can double as fender mounts),internal hub dynamo cable routing
Handlebar	SEIDO TACKLE drop bar, 31.8 mm, 16° flare
Grips	BOMBTRACK ESCAPE bar tape
Stem	SEIDO DRIFT forged aluminium stem, 0°
Headset	Sealed external aheadset, 1.1/2'' - 1.1/8''
Levers	SHIMANO GRX DI2 ST-RX815 hydraulic
Shifter	SHIMANO GRX DI2 ST-RX815 2 x 11
Brakes	SHIMANO GRX BR-RX810 flat mount hydraulic disc brakes with 160 mm rotors
Crankset	SHIMANO GRX 810-2, holow forged aluminium crank, 24 mm spindle
BB	BOMBTRACK T47 internal sealed BB for 24 mm spindle
Pedals	-
Chain	KMC X11 EPT Anti Rust chain, 1/2'' x 11/128'', 114L
Chainring	SHIMANO GRX, 48 T / 31 T
Cassette	SHIMANO ULTEGRA CS HG 800, 11-speed, 11 - 34 T
Front derailleur	SHIMANO GRX DI2 FD-RX815-F
Rear derailleur	SHIMANO GRX DI2 RD-RX815
Front hub	BOMBTRACK TAU sealed hub, 6-bolt disc
Rear hub	BOMBTRACK TAU sealed hub, 11-speed, 6-bolt disc
Through axle	12 x 100 mm / 12 x 142 mm
Front rim	WTB EZR i25 , TCS 2.0, 32h
Rear rim	WTB EZR i23 , TCS 2.0, 32h
Saddle	BOMBTRACK DART saddle
Seat post	SEIDO YEW aluminium seatpost, 27.2 mm x 300 mm
Seat clamp	BOMBTRACK PRIME 31.8 mm
Front tire	WTB RANGER TCS LIGHT / FAST ROLLING 27.5'' x 2.0'', tubeless ready
Rear tire	WTB RANGER TCS LIGHT / FAST ROLLING 27.5'' x 2.0'', tubeless ready
Fender	-
Rack	-
Kickstand	-
Light	-
Weight	tba
Weight frameset	2060 g frame (size L, incl. TA, hanger) / 600 g fork (300 mm steerer, incl. TA)
Maximum rider weight	130 kg incl. luggage
ASTM riding condition	2

Final product may vary in appearance, finish and minor details.

Model	HOOK EXT TI
BB standard	T47 - 86.5 mm shell width
Headset standard (S.H.I.S.)	EC34 / 28.6 \| EC44 / 40
Headset crown race angle	36°
Fork max tire clearance w/o fender	650B x 52C / 700C x 45C
Frame max tire clearance w/o fender	650B x 52C / 700C x 40C
Maximum chainring clearance 1x	44 T with 45 mm chainline
Maximum chainring clearance 2x	50 / 36 T with 45 mm chainline
Seat post diameter	27.2 mm
Seat clamp diameter	31.8 mm
Front derailleur clamp diameter	31.8 mm
Brake mount front	FM
Brake mount rear	FM
Maximum rotor clearance front	160 mm
Maximum rotor clearance rear	160 mm
Front through axle	12 mm x 100 mm, 1.5 thread pitch
Rear through axle	12 mm x 142 mm, 1.0 thread pitch
ISO testing standard	Road
Crankarm	XS - M 170 mm / L - XL 175 mm
Q Factor	151 mm
BCD crank	110 mm / 80 mm, asymmetric Shimano 4 bolts
Chainline	46.9 mm
Chainring offset	-
Spoke length front wheel	274 mm, 275 mm
Spoke length rear wheel	273 mm, 275 mm
Spoke count (front / rear)	32 / 32
ERD	570 mm
Front hub PCD	58 mm
Rear hub PCD	58 mm
Front hub flange distance / offset	56.5 mm center to center / 6.6 mm
Rear hub flange distance / offset	51 mm center to center / 8.8 mm
Stem length	XS - M 45 mm / L - XL 60 mm
Stem angle	0°
Headset spacers	1 x 10 mm, 2 x 5 mm
Seat post offset	0 mm
Seat post length	300
Derailleur hanger	SRAM UDH
Frame small parts	BT-CR-016
Hub end caps front	BT-HC-014
Hub end caps rear	BT-HC-017
Cassette body	BT-CB-006
Crankarm bolt	-
Through axle front	BT-TA-F-601
Through axle rear	BT-TA-R-605

FRAME GEOMETRY

Model	HOOK EXT TI
Bike Size	XS	S	M	L	XL
Wheel size	27.5''	27.5''	27.5''	27.5''	27.5''
Seat Tube Length	460	500	530	570	600
Horizontal TT length	519	533	556	570	595
Seat Angle	74.5°	74.5°	74.0°	74.0°	74.0°
Seat Angle effective	74.5°	74.5°	74.0°	74.0°	74.0°
Head Angle	71.5°	71.5°	72.0°	72.0°	72.0°
Headtube Length	110	130	150	170	190
BB Drop	75	75	70	70	70
Chainstay Length	425	425	425	425	425
Fork Offset	48	48	48	48	48
Trail	65	65	62	62	62
Wheelbase Length	995	1010	1025	1040	1060
Standover	748	776	803	831	855
Reach	365	374	387	396	409
Stack	554	573	589	608	627
Front Center	581	596	610	625	645
Axle to Crown	398	398	398	398	398
Minimum rider height ¹	1500	1600	1700	1790	1880
Maximum rider height ¹	1610	1710	1810	1900	1990

¹ Our bike size recommendation generally represents a rough guideline for quickly narrowing down the sizes from which to choose based on the body height. Bike fitting is a complex topic and other measurements and factors have to be accounted for as well. Since no two human bodys are exactly the same it is not possible to give a 100% correct advice for everyone. Therefore BOMBTRACK cannot guarantee for the stated recommendations to be correct for every individual customer. The best way to work out the correct size is to consult a local BOMBTRACK dealer or a professional bike fitter and have them determine the needed size.

HANDLEBAR GEOMETRY

Model	HOOK EXT TI
Bike Size	XS	S	M	L	XL
Handlebar type	Dropbar	Dropbar	Dropbar	Dropbar	Dropbar
Width (drops)	420	420	420	440	440
Width (barends)	490	490	490	510	510
Reach	77	77	77	77	77
Flare	16°	16°	16°	16°	16°
Backsweep	-	-	-	-	-
Drop	128	128	128	128	128
Upsweep	-	-	-	-	-
Rise	-	-	-	-	-

HOOK EXT TI

This agile adventure bike is the perfect companion for technical backcountry raids.

FRAME

FORK

TITANIUM / GREY BLUE

HOOK EXT C

BEYOND 1