Bombtrack Oxbridge Geared

Name: Bombtrack Oxbridge Geared
Brand: Bombtrack

2020 UrbanHipster Manufacturer page

Suspension: Rigid
Wheels: 700c
Drivetrain: 2 × 8 34–50t / 11–28t
Gear range: 374%
Weight: 11 kg 24.3 lb · Reference configuration not specified
Frame: Steel
Brakes: Rim brake

Rider height by size (cm)

Size guide

SM 158–171
MD 168–180
LG 178–189
XL 186–199

Components

17 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

4130 front triangle, crmo dropouts with rack / fender mounts, 68 mm BSA shell Not identified

Suspension

1 part

Fork

full 4130 crmo fork, 1" steerer, with rack and fender mounts Not identified

Drivetrain

7 parts

Bottom bracket

BSA sealed BB, 107 mm, square taper Not identified
Cassette
- Shimano CS-HG50-8 8 speeds 11–28t
CS-HG50
Chain
- KMC
Crankset
- Bombtrack 50/34t
Front derailleur
- Shimano Claris FD-R2000-B 2 speeds
FD-R2000
Rear derailleur
- Shimano Claris RD-R2000-SS 8 speeds
RD-R2000-SS
Shifters

DIA COMPE ENE downtube friction shifters Not identified

Brakes

1 part

Brakes
- Tektro R359

Wheels and tires

4 parts

Cockpit and contact points

7 parts

Other components

3 parts

Fenders

None
Lights

None
Racks

None

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 381mm

Stack 541mm

Wheelbase 1009mm

Head angle 71.0°

Seat angle 73.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 700c wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 4 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	372	381	392	403
Stackmm	511	541	568	597
Top tube lengthmm	528	546	566	585
Seat tube lengthmm	510	540	570	600
Head tube lengthmm	101	126	153	181
Head tube angle	69.5°	71°	71.5°	72°
Seat tube angle	73°	73°	73°	73°
Chainstay lengthmm	416	416	416	416
Wheelbasemm	1003	1009	1024	1039
Front centermm	596	602	617	631
Bottom bracket dropmm	65	65	65	65
Standover heightmm	757	787	815	844
Fork rakemm	50	50	50	50
Trailmm	73	64	60	58
Stack/reach ratio	1.37	1.42	1.45	1.48

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: Steel
Fork material: Steel
Bicycle weight: 11 kg

24.3 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 2
Smallest chainring: 34
Largest chainring: 50
Rear sprockets: 8
Smallest sprocket: 11
Largest sprocket: 28
Lowest gear: 35.2 in
Highest gear: 131.8 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Rim brake

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Tire clearance: Maximum tire width: 35c; Additional specification: Wheel kind: 700
Tire width: 28c
Wheel material: Aluminum
Wheel size: 700c

Gearing

Estimated speeds at 80 rpm

Lowest gear: 13.5 km/h
Highest gear: 50.5 km/h

Total gear range 374%

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: 35.2–131.8 gear inches

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 2020 builds
Specification	This bicycle Bombtrack Oxbridge Geared	Bombtrack Oxbridge
Frame
Bicycle weight	11 kg	10.4 kg
Drivetrain
Front chainrings	2	1
Smallest chainring	34	44
Largest chainring	50	44
Rear sprockets	8	1
Smallest sprocket	11	16
Largest sprocket	28	16
Lowest gear	35.2 in	79.8 in
Highest gear	131.8 in	79.8 in
Cockpit
Shifting	Mechanical	No shifting