BOMBTRACK HOOK EXT
Are you heading down the path least travelled? For a drop handlebar bike, the Hook EXT seldom faces terrain it cannot handle.
A beautiful Columbus steel frame, dedicated carbon fork and a sturdy 27.5’’ wheelset equip the EXT with an armoury to ride where other bikes would surely suffer.
A Sram 1x11 Rival groupset suitably gives this machine the gears and brakes to match.
Steel is real, baby!
Specfications
| 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 |
| Handlebar | BOMBTRACK CX-10 drop bar, 31.8 mm, 10° flare |
| Grips | BOMBTRACK ESCAPE bar tape |
| Stem | BOMBTRACK ROAM forged aluminium stem, -7° |
| Headset | Sealed external aheadset, 1.1/2'' - 1.1/8'' |
| 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 |
| 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, 40 T |
| Cassette | SRAM PG-1130 11-speed, 11 - 42 T |
| Front derailleur | - |
| Rear derailleur | SRAM RIVAL 1, clutch, long cage |
| 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 ST Light i25 double wall, TCS 2.0, 32h |
| Rear rim | WTB ST Light i23 double wall, TCS 2.0, 32h |
| Saddle | BOMBTRACK COMP saddle |
| Seat post | BOMBTRACK YEW aluminium seatpost, 27.2 mm x 300 mm |
| Seat clamp | BOMBTRACK ORIGIN forged aluminium seat clamp, 29.8 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 | - |
| Light | - |
| Weight | 11.2 kg (size M) |
| Weight frameset | 2710 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 |
Geometry
| Bike Size | S | M | L |
| Wheel size | 700C | 700C | 700C |
| Seat Tube Length | 500 | 530 | 570 |
| Horizontal TT length | 541 | 563 | 580 |
| Seat Angle | 74.5° | 74.0° | 74.0° |
| Head Angle | 70.5° | 70.5° | 70.5° |
| Headtube Length | 130 | 150 | 170 |
| BB Drop | 72 | 72 | 72 |
| Chainstay Length | 425 | 429 | 434 |
| Fork Offset | 53 | 53 | 53 |
| Trail | 69 | 69 | 69 |
| Wheelbase Length | 1034 | 1056 | 1079 |
| Standover | 773 | 805 | 822 |
| Reach | 384 | 396 | 407 |
| Stack | 564 | 583 | 602 |
| Front Center | 619 | 637 | 655 |
| Axle to Crown | 410 | 410 | 410 |
| Minimum rider height ¹ | 1630 | 1710 | 1790 |
| Maximum rider height ¹ | 1730 | 1810 | 1880 |
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
| 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 | - | - | - |
Delivery
At Atlas Adventure Store, we prioritize quality service over convenience. That's why we don't ship bicycles—we believe every bike deserves a personal touch. When you purchase a bike from us, our experts fit it to your exact specifications, perform a full setup, and thoroughly check every detail to ensure it's ready for the trail. We then personally hand over your bike, so you can ride with confidence from day one. Plus, for customers within a 30-mile radius of our shop, we offer convenient delivery, bringing your bike directly to you, fully assembled and ready to ride.
