Bombtrack Hook EXT TI

2025 RoadGravel Manufacturer page

Bombtrack Hook EXT TI, color Titanium / Black

Suspension: Rigid
Wheels: 650b
Drivetrain: 2 × 11 48t / 11–34t
Gear range: 309%
Weight: 10.8 kg 23.8 lb · Reference configuration not specified
Frame: Titanium
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

XS 156–166
SM 163–174
MD 171–182
LG 179–189
XL 185–195

Components

19 of 21 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

Titanium 3Al-2.5V, TA, rack / fender mounts, UDH derailleur hanger Not identified

Suspension

1 part

Fork
- Seido

Drivetrain

7 parts

Bottom bracket
- Bombtrack
Cassette
- Shimano CS-HG800-11 11 speeds 11–34t
CS-HG800-11
Chain
- KMC X11 11 speeds
Crankset
- Shimano GRX FC-RX810 11 speeds
FC-RX810
Front derailleur
- Shimano GRX FD-RX815-F 2 speeds
FD-RX815
Rear derailleur
- Shimano GRX RD-RX815 11 speeds
RD-RX815
Shifters
- Shimano GRX ST-RX815
ST-RX815

Brakes

2 parts

Wheels and tires

4 parts

Cockpit and contact points

7 parts

Grips
- Bombtrack
Handlebar
- Seido
Headset

Sealed external aheadset, 1.1/2'' - 1.1/8'' Not identified
Pedals

None
Saddle
- Bombtrack
Seatpost
- Bombtrack
Stem
- Seido

Other components

3 parts

Fenders

None
Lights

None
Racks

None

Sizes and geometry

5 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 381mm

Stack 593mm

Wheelbase 1034mm

Head angle 71.5°

Seat angle 73.5°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 650b wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 5 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	360	369	381	390	403
Stackmm	558	577	593	612	631
Top tube lengthmm	520	534	558	572	597
Seat tube lengthmm	460	500	530	570	600
Head tube lengthmm	110	130	150	170	190
Head tube angle	70.9°	70.9°	71.5°	71.5°	71.5°
Seat tube angle	73.9°	73.9°	73.5°	73.5°	73°
Chainstay lengthmm	425	425	425	425	425
Wheelbasemm	1003	1018	1034	1049	1068
Front centermm	588	603	618	633	652
Bottom bracket dropmm	71	71	66	66	66
Standover heightmm	753	782	805	834	857
Fork rakemm	53	53	53	53	53
Trailmm	64	64	61	60	60
Stack/reach ratio	1.55	1.56	1.56	1.57	1.57

Not published by the manufacturer: Bottom bracket height, Front travel, Rear travel, Crank length, Handlebar width, Stem length, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Titanium
Fork material: Carbon
Bicycle weight: 10.8 kg

23.8 lb
Weight limit: 130 kg

286.6 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 2
Smallest chainring: 48
Largest chainring: 48
Rear sprockets: 11
Smallest sprocket: 11
Largest sprocket: 34
Lowest gear: 38.8 in
Highest gear: 120.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Derailleur hanger: UDH
Seatpost: Rigid seatpost
Shifting: Electronic

Additional specifications

Bottom bracket standard: T47
Tire clearance: Maximum tire width: 57c; Additional specification: Wheel kind: 27.5, Maximum tire width: 57c; Additional specification: Wheel kind: 700
Tire width: 2″
Wheel material: Aluminum
Wheel size: 650b

Technical analysis

3 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Lowest gear

38.8 gear inches

This value is above the central range for this class.

Cohort: Road / Gravel Model year: 2025
Sample: 1,536 bicycles with this information
Coverage: 76.6% of the class

Highest gear

120.0 gear inches

This value is within the central range for this class.

Cohort: Road / Gravel Model year: 2025
Sample: 1,536 bicycles with this information
Coverage: 76.6% of the class

Shifting

Electronic

688 of 1,999 bicycles with this information use electronic shifting.

Cohort: Road / Gravel Model year: 2025
Sample: 1,999 bicycles with this information
Coverage: 99.7% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 14.9 km/h
Highest gear: 46.0 km/h

Total gear range 309%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 38.8–120.0 gear inches
Class reference (p10–p90): 22.8–126.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Gravel Model year: 2025
Lowest gear: 1536 bicycles with this information, 76.6% of the class
Highest gear: 1536 bicycles with this information, 76.6% of the class

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2025 builds
Specification	This bicycle Bombtrack Hook EXT TI	Bombtrack Hook	Bombtrack Hook AL Sword	Bombtrack Hook EXT Apex Eagle	Bombtrack Hook EXT C	Bombtrack Hook EXT C Apex AXS
Frame
Frame material	Titanium	Steel	Aluminum	Steel	Carbon	Carbon
Bicycle weight	10.8 kg	11.1 kg	Not informed	Not informed	Not informed	9.9 kg
Weight limit	130 kg	120 kg	120 kg	130 kg	115 kg	115 kg
Frame weight	Not informed	Not informed	Not informed	2.71 kg	Not informed	Not informed
Drivetrain
Front chainrings	2	2	2	1	1	1
Smallest chainring	48	46	31	40	38	38
Largest chainring	48	46	48	40	38	38
Rear sprockets	11	10	10	12	11	12
Smallest sprocket	11	11	11	11	10	11
Largest sprocket	34	36	38	50	42	50
Lowest gear	38.8 in	37.1 in	23.7 in	22.0 in	24.9 in	22.0 in
Highest gear	120.0 in	121.3 in	126.6 in	100.0 in	104.5 in	100.2 in
Brakes
Brake type	Hydraulic disc	Hydraulic disc	Mechanical disc	Hydraulic disc	Hydraulic disc	Hydraulic disc
Cockpit
Derailleur hanger	UDH	Not informed	UDH	Not informed	UDH	UDH
Shifting	Electronic	Mechanical	Mechanical	Mechanical	Mechanical	Electronic
Other specifications
Tire clearance	Maximum tire width: 57c; Additional specification: Wheel kind: 27.5, Maximum tire width: 57c; Additional specification: Wheel kind: 700	Maximum tire width: 45c; Additional specification: Wheel kind: 700	Maximum tire width: 45c; Additional specification: Wheel kind: 700	Maximum tire width: 57c; Additional specification: Wheel kind: 27.5, Maximum tire width: 57c; Additional specification: Wheel kind: 700	Maximum tire width: 57c; Additional specification: Wheel kind: 27.5, Maximum tire width: 57c; Additional specification: Wheel kind: 700	Maximum tire width: 57c; Additional specification: Wheel kind: 27.5, Maximum tire width: 57c; Additional specification: Wheel kind: 700
Tire width	2″	42c	42c	2″	40c	40c
Wheel size	650b	650b / 700c	650b / 700c	650b	700c / 650b	700c

Changes since 2024
Specification	2024 Bombtrack Hook EXT TI	This bicycle Bombtrack Hook EXT TI
Frame
Frame weight	2.06 kg	Not informed
Bicycle weight	Not informed	10.8 kg
Other specifications
Tire clearance	Maximum tire width: 45c; Additional specification: Wheel kind: 700	Maximum tire width: 57c; Additional specification: Wheel kind: 27.5, Maximum tire width: 57c; Additional specification: Wheel kind: 700