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19" Impact Gravity Trials Unicycle - Black (42mm)

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The ultimate 19” trials unicycle money can buy.

For more information about this product check out impactunicycles.com.


Primary Discipline: Trials
Secondary Disciplines: Street, Flatland

This is the latest generation of Impact Unicycle, combining the newest iteration of their famous Eiffel cranks, undrilled rim, and innovative hydroformed aluminium frame that not only looks great but provides one of the stiffest and most agile rides on the market.

The Gravity’s round crown and 140mm cranks make it an ideal trials unicycle, but is equally as at-home as a street or flatland machine, particularly when paired with Impacts 130mm Groovy cranks, or 118mm Eiffel cranks. (Riders wishing to ride trials and do tricks using the frame should consider the Impact Sylph unicycle)

Saddle: Impact Naomi Unicycle Saddle – Black
Seatpost: Impact Unify Unicycle Seatpost 350mm (27.2)
Seatclamp: Impact Seatpost Clamp – White (31.8mm)
Frame: Impact Gravity Frame – Black (42mm)
Hub: Impact ISIS CrMO 36 spokes (42mm)
Cranks: Impact EiffelTower Cranks – 140mm
Pedals: Nimbus Plastic Pedals - Black
Spokes: Stainless Black ED finish
Rim: Impact 47mm Wide Rim – White
Tyre: Maxxis Creepy-Crawler Tyre – 20′ x 2.5′

Weight: 4.75kg

Recommended leg length sizes for unicycle:
Standard seatpost: Minimum - 74cm (29.1"), Maximum - 90cm (35.4")
Cutdown seatpost: Minimum - 73cm (28.7") What does cutdown mean?
These sizes are measured from crotch to floor wearing shoes

Impact Logo

For more information check out impactunicycles.com

More Information
Unicycle Brand
Unicycle Type
Wheel Size
19" - ISO387
Rim Width
Frame Colour
Crank Length
Crank Type
Number of Spokes
36 Hole
Bearing Size
Bearing Spacing
Rim Colour
Frame Length
Pedal Colour
Seatpost Type
Standard - Aluminium
Seatpost Diameter
Seatpost Length
Seatpost Clamp Colour
Seatpost Clamp Size
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   Frequently Asked Questions and Answers

  • General Unicycle maintenance

    Unicycles are not complicated but they do take a little bit of maintaining. Here are some of the key points:

    Creaking Cranks

    Stop riding immediately and tighten! If these are left they will destroy the cranks and hub. The creak comes ...
    Read more

  • What does "Cut-Down" mean?

    What does "Cut-Down" mean?

    Beacuse a unicycle saddle is directly above the tyre, when it is pushed down the seatpost will hit the tyre. So the cut down measurement you see on our unicycles is the lowest the saddle can go with the seatpost cut...
    Read more

  • Impact Unicycle Instructions

    Please select your Unicycle from the list below.

    All our instructions are PDF based, you will need a PDF viewer to use the links below. We recommend Adobe Acrobat Reader, which is a free, trusted global standard for viewing PDFs. You can downlo...
    Read more

  • Impact Unicycles Manufacturers Page

    Impact Unicycles is the best manufacturer in the world for trials and flatland unicycles. Although the brand was started in 2009 by the famous French rider Yogi. It is now wholly owned by Unicycle.com. Designed by unicyclists, ridden by world champions...
    Read more

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