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2020 Mongoose

Fireball 9-Speed

A 26″ aluminum frame hardtail dirt jump bike with modest components and mechanical disc brakes.
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Manufacturer Price

$719
FrameAluminum
SuspensionHardtail, 100mm
ForkRST DIRT
Wheels26″ Aluminum
Drivetrain1 × 9
GroupsetAltus
BrakesMechanical 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

Fireball 9-Speed

20 mph

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Highest gear

(descending)

Sizing
One Size

3'11" +

🐐 Estimated

Rider Fit Notes

None yet.

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Geometry
Specs
Build
Frame

Aluminum

BB StandardBSA, 68mm, Threaded

Fork

RST DIRT-T, 26", aluminum steerer, 9mm x 100mm, thru axle

Travel100mm

Spring TypeCoil

Shock

N/A

Bottom Bracket

Samox, cartridge, 3-piece, threaded 68mm shell

Headset

Threadless, ZS44/ZS44, retainer bearing

Stem

Xposure, melt forged aluminum, threadless, 40mm, 7°, 31.8mm clamp

Handlebar

Xposure, double-butted, aluminum, 750mm width, 30mm rise, 31.8mm diameter

Saddle

Mongoose Dirt jump, integrated rails

Seatpost

Xposure, aluminum, 200mm, integrated with saddle

TypeRigid

Pedals

Flat

Grips

Mongoose Hive, single density

Groupset
Rear Derailleur

Shimano Altus RD-M2000, 9-speed

Front Derailleur

None

Crank

Samox CW-1448M, aluminum

Shifters

Shimano Altus SL-M2000, 9-speed

Cassette

SunRace, 9-speed, 11-36 tooth

Chain

KMC Z99

Chain Guide

MRP

Brakes

Mongoose, mechanical, aluminum 160mm rotors

TypeMechanical Disc

Brake Levers

Mongoose

Wheels
Rims

Xposure, aluminum, double wall, 26mm width, 32 hole

Spokes

14G, steel

Front Hub

Xposure, aluminum, sealed-bearing, 32 hole, 6-bolt

Rear Hub

Xposure, aluminum, sealed-bearing, 32 hole, 6-bolt

Tires

Kenda Small Block, 26" x 2.35", wire bead

Rider Notes
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First added May 14

Last updated May 14

Not listed for 2,206 days