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2022 Mondraker

GROMMY 73

A 12″ aluminum frame general youth e-bike with tektro md mechanical disc brakes.
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FrameAluminum
SuspensionRigid
ForkAluminum
Wheels12″ Aluminum
DrivetrainSingle-speed
Motor250W hub-drive
BrakesTektro MD Mechanical Disc
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Bikerumor
Mondraker Grommy kicks up pedal-less balance e-bike to power your kid towards eMTB

Jul 2020 · Cory Benson

Mondraker's new Grommy is a twist-throttle eMTB for kids just learning balance on two wheels. Call it e-moto, e-balance, e-bike... or just a blast to ride!

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Geometry
Specs
Build
Frame

Grommy 12 6061 Alloy Stealth Evo, HHG internal cable routing, Resin footrest, Resin motor cover, Resin chain protector, Post mount disc brake mount.

ColorBlue

Fork

MDK 12 Kid, Rigid alloy Stealth stanchions.

Headset

FPD CHEX-1089, Internal ZS, 44/50 upper and lower cup

Stem

MDK, 6061 melt forged alloy, 25.4mm barbore, rise: 0º, length: 30mm

Handlebar

MDK 1.0, 6061 alloy, rise: 25mm, width: 500mm, 9º backsweep, 5º upsweep, 25.4mm barbore

Saddle

MDK Kids series

Seatpost

One piece Push

TypeRigid

Grips

Kids

Groupset
Crank

Rings: 10T, steel

Chain

KMC Z33 Half Link, 1 speed.

Brakes

Tektro MD-510 Mechanical hydraulic, flat mount caliper, 140mm IS 6 bolts rotor

TypeTektro MD Mechanical Disc

Brake Levers

Tektro JL-350RS kids specific alloy 4 fingers

Wheels
Rims

MDK-Push 12, alloy 21mm internal width, 28 spokes

Spokes

CN round stainless steel black

Front Hub

KT K88F 9x100mm cup&cone ball bearings

Rear Hub

KT TV-3R 9x110mm cup&cone ball bearings

Tires

Front: Vee Tire Crown Gem 12x2.25 27TPI Wired Bead, Rear: Vee Tire Crown Gem 12x2.25 27TPI Wired Bead

Electric Components
Motor

MDK brushless 250w Output

Battery

MDK 4Ah 80Wh

Display

MDK LED Throttle 3speed position, battery range.

Rider Notes
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First added March 18

Last updated November 6

Not listed for 1,314 days