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Bombtrack Bicycle Company Bombtrack Hook Ext

Bombtrack Bicycle Company Bombtrack Hook Ext
  • Size: Flat Bar Large 57
  • Size: Flat Bar Large 57
$3,199.99 - $4,199.99
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Order now and pick up in-store for free

Details

-Columbus steel frame with carbon fork, tons of tire clearance, and great components.
-This bike is super light and really responsive, but strong enough to load up with gear (plus all the mounts to do so).
-It's ideal as a bikepacking steed and devourer of gravel, but gets rave reviews from all kinds of riders.
-Rugged SRAM groupsets and 1x drivetrains
-Capabilities to add a dynamo light to front and back

Bombtrack tends to take a tech-first approach, so their bikes pack a lot of punch when it comes to performance, and they've done some really cool things with the geometry on the EXT.


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
BB standard T47 - 85.5 mm shell width
Headset standard (S.H.I.S.) EC34 / 28.6 | EC44 / 40
Headset crown race angle 36°
Fork steerer inner diameter 23.6 mm
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 29.8 mm
Front derailleur clamp diameter 28.6 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, 1.5 thread pitch
ISO testing standard Road
Crankarm XS 165 mm / S - M 170 mm / L - XL 175 mm
Q Factor 152 mm
BCD crank Direct mount (Sram compatible)
Chainline 45 mm
Chainring offset 5 mm
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 - 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 300
Bike trailer approved
Seat tube mounted child seat approved
Derailleur hanger BT-DH-008
Frame small parts BT-CR-007 / BT-CR-006
Hub end caps front BT-HC-014
Hub end caps rear BT-HC-017
Cassette body BT-CB-006
Crankarm bolt BT-CRP-002
Through axle front BT-TA-F-601
Through axle rear BT-TA-R-602

Specs

Frame COLUMBUS CROMOR double butted tubing, TA, rack / fender mounts, internal light cable routing, rear light mount, 86.5 mm T47 BB shell
Fork Full carbon, TA, 1.1/2'' - 1.1/8'', triple cage mounts (can double as fender mounts),internal hub dynamo cable routing
Headset Sealed external aheadset, 1.1/2'' - 1.1/8''
Rims WTB ST Light i25 double wall, TCS 2.0, 32h
Tires Front & Rear: WTB RANGER TCS LIGHT / FAST ROLLING 27.5'' x 2.0'', tubeless ready
Crankset BOMBTRACK LYER forged aluminium crank, direct mount interface (SRAM compatible),30 mm spindle
Bottom Bracket BOMBTRACK T47 internal sealed BB for 30 mm spindle
Chain KMC X11 EPT Anti Rust chain, 1/2'' x 11/128'', 114L
Handlebars Sealed external aheadset, 1.1/2'' - 1.1/8''
Stem BOMBTRACK ROAM forged aluminium stem, -7°
Brake Levers SRAM RIVAL 1 double tap hydraulic
Brakes SRAM RIVAL flat mount hydraulic disc brakes with 160 mm rotors
Seat Post BOMBTRACK YEW aluminium seatpost, 27.2 mm x 300 mm
Color(s) matt black
Sizes L 57, S 50, Flat bar L
Weight 11.2 kg (size M). Maximum rider weight 130 kg incl. Luggage

* Subject to change without notice.

Videos

Bombtrack Hook Ext

Matt Black model

House Blend: Sidesaddle Bikes

HOUSE BLEND is a video-series presenting dedicated Bombtrack core-shops spread all over the planet.