HOOK EXT C

Just sitting in your kitchen, the Hook EXT C screams fast. Whether you are gravel racing or bikepacking with your friends, you’ll be going ‘full-gas’ with a smile on your face. New for 2024 is the T800 carbon frame, complete with optional internal cable routing and our signature collection of mounting points, for when you’re riding fast and light with only frame bags. Upfront you’ll find the Seido’s MGV fork with its huge tyre clearance, internal cable routing and multiple mounting points for your kit. SRAM’s Rival 1x groupset provides braking and shifting duties via a 10 – 42T cassette, running with a 38T direct mount chainring on our Bombtrack Lyer crank.

The cockpit is from Seido, with the new Tackle handlebar and it’s 16˚ flare. All this is tied in with the multi-award winning Hunt 4Season Gravel hoops, sporting WTB 40 mm Venture tyres.

METALLIC BLACK

LIGHT BLUE

HIGHLIGHTS

FRAME

Carbon frame with UDH hanger and optional full internal cable routing.
FORK

Seido MGV full carbon fork with lowrider mounts and internal light cable routing.
DRIVETRAIN

Hydraulic Sram Rival 1 x 11 groupset and brakes.
CASSETTE

Sram XG-1150 10 – 42 T cassette for wide 1x gear range.
CRANKSET

Bombtrack Lyer 30 mm aluminium crank with 38 T direct mount chainring.
WHEELS

Tubeless ready Hunt 4 Season wheels with tubeless ready WTB Venture 700 x 40C tires.

"With the ability to carry serious loads, triple mounts on the forks and three separate bottle cage fixings allow you to carry as much as you need with you.”

SPECIFICATIONS

Model	HOOK EXT C
Color 1	Metallic Black
Color 2	Light Blue
Frame	Toray T800 carbon blend, TA, rack / fender mounts, internal hub dynamo cable routing, 85.5 mm T47 BB shell, UDH derailleur hanger, optional full internal cable routing
Fork	Seido MGV full carbon, TA, 1.1/2'' - 1.1/8'', fender / triple cage mounts, 180 mm max rotor size, lowrider rack compatible, internal hub dynamo cable routing
Handlebar	Seido Tackle drop bar, 31.8 mm, 16° flare
Grips	Bombtrack Escape bar tape
Stem	Bombtrack Roam forged aluminium stem, -7°
Headset	Sealed integrated aheadset, 1.1/2'' - 1.1/2''
Levers	Sram Rival 1 double tap hydraulic
Shifter	Sram Rival 1 double tap 1 x 11
Brakes	Sram Rival flat mount hydraulic disc brakes with 160 mm rotors
Rotor	Sram Centerline 180 mm front and 160 mm rear rotor
Crankset	Bombtrack Lyer forged aluminium crank, direct mount interface (Sram compatible),30 mm spindle
BB	Bombtrack T47 internal sealed BB for 30 mm spindle
Pedals	-
Chain	KMC X11 EPT Anti Rust chain, 1/2'' x 11/128'', 114L
Chainring	CNC machined aluminium, narrow-wide, 38 T
Cassette	Sram XG-1150 11-speed, 10 - 42 T
Front derailleur	-
Rear derailleur	Sram Rival 1, clutch, long cage
Front hub	Hunt 4 Season Gravel Disc sealed hub, centerlock disc
Rear hub	Hunt 4 Season Gravel Disc sealed hub, centerlock disc, XD cassette body
Through axle	12 x 100 mm / 12 x 142 mm
Front rim	Hunt Hunt 4 Season Gravel Disc double wall asymmetric rim, TLC, i21, 28h
Rear rim	Hunt Hunt 4 Season Gravel Disc double wall asymmetric rim, TLC, i21, 28h
Saddle	Bombtrack Dart saddle
Seat post	Seido Yew aluminium seatpost, 27.2 mm x 350 mm
Seat clamp	Bombtrack Prime 31.8 mm
Front tire	WTB Venture TCS Light 700C x 40C, tubeless ready
Rear tire	WTB Venture TCS Light 700C x 40C, tubeless ready
Fender	-
Rack	-
Kickstand	-
Light	-
Weight	tba
Weight frameset	tba
Maximum rider weight	115 kg incl. luggage
ASTM riding condition	2

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

BUILD INFOS

Model	HOOK EXT C
BB standard	T47 - 85.5 mm shell width
Headset standard (S.H.I.S.)	IS52 / 28.6 \| IS52 / 40
Headset crown race angle	45°
Fork steerer inner diameter	23.6 mm
Fork max tire clearance w/o fender	650B x 57C / 700C x 57C
Frame max tire clearance w/o fender	650B x 57C / 700C x 45C
Maximum chainring clearance 1x	42 T with 47 mm chainline
Maximum chainring clearance 2x	48 / 31 T with 47 mm chainline
Seat post diameter	27.2 mm
Seat clamp diameter	31.8 mm
Front derailleur clamp diameter	bolt on FD hanger included in frame
Frame front derailleur compatible	yes
Brake mount front	FM 160 / 180
Brake mount rear	FM 160 / 180
Maximum rotor clearance front	180 mm
Maximum rotor clearance rear	180 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	S - M 170 mm / L 175 mm
Q Factor	152 mm
BCD crank	Direct mount (Sram Compatible)
Chainring offset	6 mm
Chainline	46 mm
Spoke length front wheel	tba
Spoke length rear wheel	tba
Spoke count (front / rear)	28 / 28
ERD	tba
Front hub PCD	45 mm / 58 mm
Rear hub PCD	49 mm / 58 mm
Front hub flange distance / offset	62 mm center to center / 7.7 mm
Rear hub flange distance / offset	57.7 mm center to center / 7.4 mm
Stem length	XS - S 80 mm / M 90 mm / L - XL 100 mm
Stem angle	-7°
Headset spacers	1 x 10 mm, 2 x 5 mm
Seat post offset	0 mm
Seat post length	350 mm
Bike trailer	not approved
Seat tube mounted child seat	not approved
Derailleur hanger	Sram UDH
Frame small parts	BT-CR-014 / BT-CR-015
Hub end caps front	-
Hub end caps rear	-
Cassette body	-
Crankarm bolt	BT-CRP-002
Through axle front	BT-TA-F-601
Through axle rear	BT-TA-R-606

GEOMETRY

FRAME GEOMETRY

Model	HOOK EXT C
Bike Size	S	M	L	XL
Wheel size	700C	700C	700C	27.5''
Seat Tube Length	500	530	570	580
Horizontal TT length	541	566	578	580
Seat Angle	74.5°	74.0°	74.0°	73.0°
Head Angle	70.5°	70.5°	70.5°	73.0°
Headtube Length	130	150	170	72.0°
BB Drop	72	72	72	190
Chainstay Length	425	429	434	67
Fork Offset	53	53	53	435
Trail	71	71	71	48
Wheelbase Length	1035	1060	1080	61
Standover	793	816	845	1050
Reach	381	396	404	837
Stack	577	595	614	394
Front Center	620	641	656	610
Axle to Crown	410	410	410	624
Minimum rider height	1630	1710	1790	398
Maximum rider height	1730	1810	1880	1860

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