Bombtrack Munroe Loop

2025 UrbanHybrid Manufacturer page

Bombtrack Munroe Loop, color Metallic Purple

Suspension: Rigid
Wheels: 650b
Drivetrain: 1 × 8 34t / 11–34t
Gear range: 309%
Weight: 13.8 kg 30.4 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

XS 151–164
SM 160–172
MD 166–179

Components

20 of 23 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

6061-T6 triple butted aluminium, QR, rack / fender mounts, 68 mm BSA shell Not identified

Suspension

1 part

Fork

6061 aluminium, QR dropouts, with fender / rack / triple cage mounts, internal light cable routing Not identified

Drivetrain

7 parts

Bottom bracket

BSA sealed BB, 119 mm, square taper Not identified
Cassette
- microSHIFT 11–34t
CS-H81
Chain
- KMC
Crankset
- Bombtrack
Front derailleur

None
Rear derailleur
- microSHIFT Mezzo Rear Derailleur 8/9 Speed Short Cage 9 speeds
RD-M36S
Shifters
- microSHIFT Thumb Tap Shifters 3×8 – TS39 8 speeds

Brakes

2 parts

Brakes
- Shimano BR-MT200
BR-MT200
Disc rotors
- Shimano SM-RT26
SM-RT26

Wheels and tires

4 parts

Cockpit and contact points

7 parts

Other components

3 parts

Sizes and geometry

3 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size SM

Table

Reach 376mm

Stack 607mm

Wheelbase 1051mm

Head angle 70.0°

Seat angle 73.0°

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 3 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	362	376	388
Stackmm	588	607	625
Top tube lengthmm	542	561	579
Seat tube lengthmm	460	490	520
Head tube lengthmm	150	170	190
Head tube angle	70°	70°	70°
Seat tube angle	73°	73°	73°
Chainstay lengthmm	440	440	440
Wheelbasemm	1030	1051	1070
Front centermm	602	621	641
Bottom bracket dropmm	75	75	75
Standover heightmm	683	693	702
Fork rakemm	45	45	45
Trailmm	77	77	77
Stack/reach ratio	1.62	1.61	1.61

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: Aluminum
Fork material: Aluminum
Bicycle weight: 13.8 kg

30.4 lb
Weight limit: 110 kg

242.5 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 34
Largest chainring: 34
Rear sprockets: 8
Smallest sprocket: 11
Largest sprocket: 34
Lowest gear: 27.5 in
Highest gear: 85.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Tire clearance: Maximum tire width: 50c; Additional specification: Wheel kind: 27.5
Tire width: 45c
Wheel material: Aluminum
Wheel size: 650b

Gearing

Estimated speeds at 80 rpm

Lowest gear: 10.5 km/h
Highest gear: 32.6 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: 27.5–85.0 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 2025 builds
Specification	This bicycle Bombtrack Munroe Loop	Bombtrack Munroe AL	Bombtrack Munroe Cargo	Bombtrack Munroe SG	Bombtrack Munroe SG Commuter
Frame
Bicycle weight	13.8 kg	10.7 kg	14.8 kg	12 kg	Not informed
Weight limit	110 kg	110 kg	140 kg	110 kg	110 kg
Frame weight	Not informed	Not informed	Not informed	Not informed	1.66 kg
Drivetrain
Front chainrings	1	1	2	1	2
Smallest chainring	34	34	22	40	32
Largest chainring	34	34	36	40	48
Rear sprockets	8	8	9	9	10
Largest sprocket	34	34	36	46	38
Lowest gear	27.5 in	27.5 in	16.8 in	23.9 in	24.4 in
Highest gear	85.0 in	85.0 in	90.0 in	100.0 in	126.6 in
Brakes
Brake type	Hydraulic disc	Hydraulic disc	Hydraulic disc	Mechanical disc	Mechanical disc
Wheels
Wheel configuration	Same size	Same size	Different sizes	Same size	Same size
Other specifications
Tire clearance	Maximum tire width: 50c; Additional specification: Wheel kind: 27.5	Maximum tire width: 50c; Additional specification: Wheel kind: 27.5, Maximum tire width: 35c; Additional specification: Wheel kind: 700	Maximum tire width: 2.5″	Maximum tire width: 50c; Additional specification: Wheel kind: 27.5, Maximum tire width: 35c; Additional specification: Wheel kind: 700	Maximum tire width: 50c; Additional specification: Wheel kind: 27.5, Maximum tire width: 35c; Additional specification: Wheel kind: 700
Tire width	45c	45c	2.3″	45c	45c
Wheel size	650b	650b	20″ / 650b	650b	700c