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2025 Bombtrack

MUNROE LOOP

A 650b aluminum frame hybrid bike with modest components and shimano hydraulic disc brakes.
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Weight13.8 kg  
FrameAluminum
SuspensionRigid
ForkAluminum
Wheels650b Aluminum
Drivetrain1 × 8
GroupsetmicroSHIFT Mezzo
BrakesShimano Hydraulic Disc
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Insights
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

41 km/h

MUNROE LOOP

56 km/h

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Highest gear

(descending)

Sizing
XS

151cm – 164cm

SM

160cm – 172cm

MD

166cm – 179cm

🐐 Estimated

Rider Fit Notes

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Geometry
Specs
Build
Frame

6061-T6 triple butted aluminium, QR, rack / fender mounts, 68 mm BSA shell

BB StandardBSA, Threaded

Tire Clearance50c

ColorMetallic Purple

Fork

6061 aluminium, QR dropouts, with fender / rack / triple cage mounts, internal light cable routing

Bottom Bracket

BSA sealed BB, 119 mm, square taper

Headset

Neco H282 sealed external aheadset, 1.1/8''

Stem

Seido Meander forged aluminium stem, -6°

Handlebar

Seido Azimuth flat bar, 31.8 mm, 40° backsweep

Saddle

Bombtrack Fuzz saddle

Seatpost

Bombtrack Beech 27.2 mm x 300 mm

TypeRigid

Pedals

Wellgo B109N flat pedal

Grips

Bombtrack Scroll grips

Groupset
Rear Derailleur

Microshift RD-M36S

Front Derailleur

-

Crank

Bombtrack Aude aluminium crank, square taper

Shifters

Microshift TS39-8 shifter 1 x 8

Cassette

Microshift CS-H81 8-speed, 11 - 34 T

Chain

KMC X8 chain, 1/2" x 3/32"

Brakes

Shimano BR-MT200 post mount hydraulic disc brake

TypeShimano Hydraulic Disc

Wheels
Rims

Front: WTB ST i21 double wall, TCS 2.0, 32h, Rear: WTB ST i21 double wall, TCS 2.0, 32h

Front Hub

Bombtrack Arc sealed hub, 6-bolt disc, hex key skewer

Rear Hub

Bombtrack Arc sealed hub, 11-speed, 6-bolt disc, hex key skewer

Tires

Front: Kenda Kwick Seven.5 650B x 45C, Rear: Kenda Kwick Seven.5 650B x 45C

Disc Rotors

Shimano SM-RT26 160 mm rotors

Accessories
Lights

-

Fenders

Bombtrack Ward aluminium fenders, 55 mm

Racks

Bombtrack Deck frontrack, aluminium

Rider Notes
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First added 12 July

Last updated 30 May