HOOK EXT SX EAGLE

Built for control and confidence on any terrain, the flat bar Hook EXT SX Eagle combines rugged performance with everyday versatility. Its double-butted chromoly frame features a tapered headtube and T47 bottom bracket for durability and responsive handling. Up front, a full carbon fork with triple cage mounts and internal hub dynamo routing boosts your bikepacking potential. The SRAM SX Eagle 12-speed drivetrain with an 11–50T cassette and 38T chainring mounted to a Rival wide chainset delivers a wide gear range while keeping an efficient road q-factor. Rolling on tubeless-ready WTB ST Light i25/i23 rims and WTB Ranger TCS Light tires, this flat bar setup gives you off-road traction with on-road agility—ready for whatever path you choose.

MATT DESERT GREEN

HIGHLIGHTS

  • FRAME

    Double butted crmo frame with tapered headtube and T47 bottom bracket.

  • FORK

    Full carbon fork with triple cage mounts and internal hub dynamo cable routing.

  • DRIVETRAIN

    Sram SX Eagle 12-speed drivetrain with 11 – 50 T cassette and 30 T chainring.

  • CRANKSET

    Sram Rival Wide crankset with 38 T direct mount chainring.

  • FLATBAR

    720 mm wide, 9° backsweep and 4° upsweep.

  • RIMS

    Tubeless ready WTB ST Light i25 / i23 rim combination.

"Columbus tubing meets SRAM SX and an EXT carbon fork, tying together the flatbar Hook EXT SX into the ultimate package of quality and versatility"

SPECIFICATIONS

ModelHOOK EXT SX EAGLE
Color 1Matt desert green
Color 2-
Color 3-
FrameColumbus Cromor double butted, TA, rack / fender mounts, internal light cable routing, rear light mount, 85.5 mm T47 BB shell
ForkBombtrack EXT full carbon, TA, 1.1/2'' - 1.1/8'', fender / triple cage mounts, internal hub dynamo cable routing
HandlebarBombtrack Trail flat bar, 31.8 mm, 9° backsweep, 4° upsweep, 7 mm rise
GripsBombtrack Tab 129 mm grips
StemBombtrack Roam forged aluminium stem, -7°
HeadsetSealed external aheadset, 1.1/2'' - 1.1/8''
LeversSram Level hydraulic
ShifterSram SX-Eagle 12-speed shifter
BrakesSram Level hydraulic disc brakes
RotorSram G2 Cleansweep 160 mm rotors
CranksetSram Rival Wide, DUB spindle
BBSram DUB T47 85.5 mm
Pedals-
ChainSram NX Eagle chain, 1/2'' x 11/128'', 114L
ChainringSram Rival, 12-speed, 38 T
CassetteSram PG-1210 Eagle 12-speed, 11 - 50 T
Front derailleur-
Rear derailleurSram SX Eagle, clutch, long cage
Front hubBombtrack Tau sealed hub, 6-bolt disc
Rear hubBombtrack Tau sealed hub, 11-speed, 6-bolt disc
Through axle12 x 100 mm / 12 x 142 mm
Front rimWTB ST Light i25 double wall, TCS 2.0, 32h
Rear rimWTB ST Light i23 double wall, TCS 2.0, 32h
SaddleBombtrack Comp saddle
Seat postBombtrack Yew aluminium seatpost, 27.2 mm x 300 mm
Seat clampBombtrack Origin 29.8 mm
Front tireWTB Venture TCS Light / Fast Rolling 27.5'' x 2.0'', tubeless ready
Rear tireWTB Venture TCS Light / Fast Rolling 27.5'' x 2.0'', tubeless ready
Fender
Rack
Kickstand
Light
Weight11.7 kg (size M)
Weight frameset2710 g frame (size L, incl. TA, hanger) / 600 g fork (300 mm steerer, incl. TA)
Maximum rider weight130 kg incl. Luggage
ASTM riding condition2
 

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

BUILD INFOS

ModelHOOK EXT SX EAGLE
BB standardT47 - 85.5 mm shell width
Headset standard (S.H.I.S.)EC34 / 28.6 | EC44 / 40
Headset crown race angle45°
Fork steerer inner diameter23.6 mm
Fork max tire clearance w/o fender650B x 52C / 700C x 45C
Frame max tire clearance w/o fender650B x 52C / 700C x 40C
Maximum chainring clearance 1x44 T with 45 mm chainline
Maximum chainring clearance 2x50 / 36 T with 45 mm chainline
Seat post diameter27.2 mm
Seat clamp diameter29.8 mm
Front derailleur clamp diameter28.6 mm
Frame front derailleur compatibleyes
Brake mount frontFM 140 / 160
Brake mount rearFM 140 / 160
Frame thickness rear brake mount10 mm
Maximum rotor clearance front160 mm
Maximum rotor clearance rear160 mm
Front through axle12 mm x 100 mm, 1.5 thread pitch
Rear through axle12 mm x 142 mm, 1.5 thread pitch
ISO testing standardRoad
CrankarmXS 165 mm / S - M 170 mm / L - XL 175 mm
Q Factor150 mm
BCD crankDirect mount (Sram Compatible)
Chainring offset6 mm
Chainline47.5 mm
Spoke length front wheel274 mm, 275 mm
Spoke length rear wheel273 mm, 275 mm
Spoke count (front / rear)32 / 32
ERD570 mm
Front hub PCD58 mm
Rear hub PCD58 mm
Front hub flange distance / offset56.5 mm center to center / 6.6 mm
Rear hub flange distance / offset51 mm center to center / 8.8 mm
Stem length90 mm
Stem angle-6°
Headset spacers1 x 10 mm, 2 x 5 mm
Seat post offset0 mm
Seat post length300 mm
Bike trailerapproved
Seat tube mounted child seatapproved
Derailleur hangerBT-DH-008
Frame small partsBT-CR-007 / BT-CR-006
Hub end caps frontBT-HC-014
Hub end caps rearBT-HC-017
Cassette bodyBT-CB-006
Crankarm bolt-
Through axle frontBT-TA-F-601
Through axle rearBT-TA-R-602
 

GEOMETRY

 

FRAME GEOMETRY

ModelHOOK EXT SX EAGLE
Bike SizeXSSMLXL
Wheel size27.5''27.5''27.5''27.5''27.5''
Seat Tube Length460500530570600
Horizontal TT length519533556570595
Seat Angle74.5°74.5°74.0°74.0°74.0°
Head Angle71.5°71.5°72.0°72.0°72.0°
Headtube Length110130150170190
BB Drop7575707070
Chainstay Length425425425425425
Fork Offset4848484848
Trail6565626262
Wheelbase Length9951010102510401060
Standover748776803831855
Reach365374387396409
Stack554573589608627
Front Center581596610625645
Axle to Crown395395395395395
Minimum rider height ¹15001600170017901880
Maximum rider height ¹16101710181019001990
 

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

ModelHOOK EXT SX EAGLE
Bike SizeXSSMLXL
Handlebar typeFlatbarFlatbarFlatbarFlatbarFlatbar
Width (drops)-----
Width (barends)720720720720720
Reach-----
Flare-----
Backsweep9°9°9°9°9°
Drop-----
Upsweep4°4°4°4°4°
Rise77777
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