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2025 Bombtrack

MUNROE AL

A 650b aluminum frame hybrid bike with modest components and hydraulic disc brakes.
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Weight23.6 lbs  
FrameAluminum
SuspensionRigid
ForkAluminum
Wheels650b Aluminum
Drivetrain1 × 8
GroupsetmicroSHIFT Mezzo
BrakesHydraulic 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)

25 mph

MUNROE AL

35 mph

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Highest gear

(descending)

Sizing
SM

5'2" – 5'7"

MD

5'6" – 5'11"

LG

5'9" – 6'2"

🐐 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 (27.5″) / 35c (700c)

ColorMatt Pebble Grey

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

Bombtrack Origin flat bar, 31.8 mm, 8° 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

Clarks Clout post mount hydraulic disc brake

TypeHydraulic 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

Clarks Clout 160 mm rotors

Accessories
Lights

-

Fenders

-

Racks

-

Rider Notes
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First added July 12

Last updated May 30