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Nature BIKES
Range GROMMY
Season 2023

Spectacular! Can you imagine having had an ebike to learn to balance on when you were 3 years old?

That’s what the GROMMY 12 is for, an ebike for the little shredders in the house to gain confidence and learn to balance on. The GROMMY 12 is ideal for ages 3 to 5, with its 6061 aluminum frame, 7.5kg weight, a saddle height adjustable between 37cm and 47cm, and providing up to an hour’s range with fully controllable power delivery. The first and only ebike with true mountain bike DNA. You’d like to be little again so you could have one, wouldn’t you? Us too! As with the GROMMY 16, the GROMMY 12 offers a version with the livery of the motorcycling World Champions, Marc and Alex Márquez.

Components

Technical specs

  • frame

    Frame

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

    sizes

    Sizes

    One size: 190mm

  • fork

    Fork

    MDK 12 Kid, Rigid alloy Stealth stanchions.

    headset

    Headset

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

  • stem

    Stem

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

    handlebar

    Handlebar

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

  • grips

    Grips

    Kids

    seatpost

    Seatpost

    One piece Push

  • saddle

    Saddle

    MDK Kids series

    rear brake

    Rear brake

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

  • brake lever

    Brake lever

    Tektro JL-350RS kids specific alloy 4 fingers

    rims

    Rims

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

  • spokes

    Spokes

    CN round stainless steel black

    front hub

    Front hub

    KT K88F 9x100mm cup&cone ball bearings

  • rear hub

    Rear hub

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

    front tire

    Front tire

    Vee Tire Crown Gem 12x2.25 27TPI Wired Bead

  • rear tire

    Rear tire

    Vee Tire Crown Gem 12x2.25 27TPI Wired Bead

    rings

    Rings

    10T, steel

  • chain

    Chain

    KMC Z33 Half Link, 1 speed.

    casette

    Casette

    DNP freewheel 16T

  • weight

    Weight

    7,7 kg

    display

    Display

    MDK LED Throttle 3speed position, battery range.

  • motor

    Motor

    MDK brushless 250w Output

    battery

    Battery

    MDK 4Ah 80Wh

Sizes

Geometry

  Frame size Grommy 12
A Seattube length 155 mm
B Toptube length 400 mm
C Bottom bracket drop
D Bottom bracket height 150 mm
E Chainstay length 285mm
F Seat tube angle
G Effective seattube angle
H Headtube angle
I Fork Offset
J Wheelbase 695 mm
K Headtube length
L Reach
M Stack 345 mm


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