Availability: Out of stock

20" Impact Sylph Pro Unicycle - Black (32mm)


The 20" Impact Sylph Unicycle developed by some of the best riders in the world.

For more information about this product check out impactunicycles.com. Here are the Build Instructions for this Unicycle, and some important Assembly Advice

Primary Discipline: Flatland
Secondary Disciplines: Freestyle, General Riding

The Sylph is the newest member of the Impact Unicycles family. Designed in response to the growing ‘Flatstyle’ and X-Style movements within Flatland, the Sylph features a 20” rim and tyre combo, with 118mm cranks to help with smooth rolling flatland combos, coasts, and transitions. This unicycle is also ideal for Freestyle riders looking for a chunkier, more durable ride, and those who want the strongest ‘standard’ 20” unicycle possible.

20” wheels offer less rolling resistance than their 19” counterparts, ideal for flatland riding. For riding involving jumps and heavy Impact, riders may wish to consider the Impact Reagent or Gravity, which both feature 19” wheels and trials tires for maximum volume and shock absorption.

This unicycle is available with both 32mm (Sylph Pro) and 42mm bearings (Sylph).

– 32mm bearings are Impact’s performance bearing, providing a dramatic decrease in weight, as well as added stiffness. As a performance product, these bearings require maintenance and have a shorter life than 42mm bearings.

– 42mm bearings are used on almost all mid-professional tier unicycles. Although heavier than 32mm bearings, these bearings offer reliability and increased compatibility for other brand’s frames.

Saddle: Impact Naomi Unicycle Saddle - Black
Seatpost: Impact ‘ALLinONE’ Seatpost 300mm (27.2mm)
Seatclamp: Impact ’1 Bolt’ Seatpost Clamps (31.8mm) - White
Frame: 20" Impact Reagent/Sylph Pro Frame - White (32mm) 
Hub: Impact  ISIS CrMO 36 spokes – White (32mm)
Cranks: Impact EiffelTower Cranks - 118mm
Pedals: Impact ‘All Bran’ Pedals - Black
Spokes: Stainless Black ED Finish
Rim: Impact 47mm Wide Rim - White
Rim Tape: Rubber rim tape
Tyre: Duro DB5060 BMX tyre - 20" x 2.4"

Weight: 4.8kg

Recommended leg length sizes for unicycle:
Standard seatpost: Minimum - 72cm (28.3"), Maximum - 86cm (33.9")
Cutdown seatpost: Minimum - 62cm (24.4")
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
20" - ISO406
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
Write Your Own Review
You're reviewing:20" Impact Sylph Pro Unicycle - Black (32mm)
Your Rating
Blog Posts

   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

  • 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

To Top