

BIKE BOMBTRACK HOOK
SKU: BI4283
Naturally, our steel Hook is something special, being built from double-butted Columbus Cromor tubing, with a tapered headtube and a T47 bottom bracket. XS and S sizes feature 650B wheels, M - XL have 700C options and both run WTB tubeless rims and tyres on sealed hubs. A Shimano GRX groupset with a subcompact 46 / 30T crankset, combined with an 11 - 36T cassette helps to keep you spinning up and over the hills, and GRX 400 callipers deliver powerful braking on the descents. The frameset is bedecked with mounts for every scenario, including a top tube bag, triple cage mounts and bottle mount options, as well as internal dynamo routing on the full carbon fork.
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SPECIFICATIONS
| Color 1 | Glossy Metallic Black / Purple |
| Color 2 | Glossy Metallic Blue |
| Frame | COLUMBUS CROMOR double-butted, TA dropout, rack/fender mounts, 86.5 mm T47 BB shell |
| Fork | Full carbon, TA, 1.1/2'' - 1.1/8'', fender / triple cage mounts |
| Handlebar | BOMBTRACK CX-10 drop bar, 31.8 mm, 10° flare |
| Grips | BOMBTRACK COMMAND bar tape |
| Stem | BOMBTRACK ROAM forged aluminum stem, -7° |
| Headset | Sealed external headset, 1.1/2'' - 1.1/8'' |
| Levers | SHIMANO GRX ST-RX400 STI Hydraulic |
| Shifter | SHIMANO GRX ST-RX400 STI 2 x 10 |
| Brakes | SHIMANO GRX BR-RX400 hydraulic disc brakes with 160 mm rotors |
| Crankset | BOMBTRACK LYER forged aluminum crank, direct mount interface (SRAM compatible),30 mm spindle |
| BB | BOMBTRACK T47 internal sealed BB for 30 mm spindle |
| Pedals | - |
| Chain | KMC X10 EPT Anti Rust chain, 1/2'' x 11/128'', XS - S 112L, M - XL 114L |
| Chainring | Aluminum, subcompact, 48 / 32 T, direct mount spider |
| Cassette | SHIMANO CS-HG50 10-speed, 11 - 36 T |
| Front Derailleur | SHIMANO GRX FD-RX400 |
| Rear Derailleur | SHIMANO GRX RD-RX400, clutch |
| 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 i19 double wall, TCS 2.0, 32h |
| Rear rim | WTB ST i19 double wall, TCS 2.0, 32h |
| Saddle | Color 1 BOMBTRACK DART saddle / Color 2 BOMBTRACK COMP saddle |
| Seat post | BOMBTRACK BEECH 27.2 mm x 315 mm |
| Seat clamp | BOMBTRACK ORIGIN 29.8 mm |
| Front tire | XS - S WTB RESOLUTE 42-584 / M - XL WTB VENTURE 40-622, tubeless ready |
| Rear tire | XS - S WTB RESOLUTE 42-584 / M - XL WTB VENTURE 40-622, tubeless ready |
| Fender | - |
| Rack | - |
| Kickstand | - |
| Light | - |
| Weight | 11.0 kg (size M) |
| Weight frameset | 2420 g frame (size M, incl. TA, hanger) / 600 g fork (300 mm steerer, incl. TA) |
| Maximum rider weight | 120 kg incl. luggage |
| ASTM riding condition | 2 |
BUILD INFORMATION
| BB standard | T47 - 86.5 mm shell width |
| Headset standard (S.H.I.S.) | EC34 / 28.6 | EC44 / 40 |
| Headset crown race angle | 45° |
| Fork steerer inner diameter | 23.6 mm |
| Fork max tire clearance w/o fender | XS - S 650B x 52C / M - XL 700C x 45C |
| Frame max tire clearance w/o fender | XS - S 650B x 42C / M - XL 700C x 42C |
| Maximum chainring clearance 1x | 40 T with 45 mm chain line |
| Maximum chainring clearance 2x | 48 / 32 T with 46.9 mm chain line |
| 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 - S 165 mm / M 170 mm / L - XL 175 mm |
| Q Factor | 152 mm |
| BCD crank | 104 mm (Sram direct mount compatible spider),4 bolts |
| Chainline | 45 mm |
| Chainring offset | small ring 0 mm / big ring -2 mm |
| Spoke length front wheel | XS - S 273, 275mm / M - XL 292 mm, 293 mm |
| Spoke length rear wheel | XS - S 275, 273mm / M - XL 293 mm, 291 mm |
| Spoke count (front / rear) | 32 / 32 |
| ERD | XS - S 570 mm / M - XL 604 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 | 24 mm |
| Seat post length | 315 mm |
| Derailleur hanger | BT-DH-008 |
| Frame small parts | BT-CR-007 |
| 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 |
THE PRICES, SPECIFICATIONS AND PHOTOS SHOWN IN THIS CATALOG ARE NOT SUBJECT TO ANY CONTRACTUAL OBLIGATION AND MAY CHANGE DURING THE SEASON
