Glossary for Pro Scooters

Glossary Terms


Where your feet are.  The base of the scooter in which all parts attach to.  Comes in many widths and lengths.  Now up to 7" wide!   Decks are one of the major components of your scooter.



Attached to the base, its purpose is to hold the headset, bars and fork. Your headtube can be integrated or non integrated.


Is the set of components on a scooter that provides a rotatable interface between the fork and the head tube.  



Component that is inserted into the headtube and headset and used to mount the bars.  The fork is what holds your front wheel with an axle. This is part of what holds your scooter together.



 Term referring to a type of fork or headset in which a large diameter nut threads on the top tube of fork compressing the headset components to enable proper rotation of the fork in the headset.  Mostly common in older styler or entry level scooters. 

Threadless Fork

Term referring to a type of fork or headset in which a compression system (ICS, HIC, SCS, IHC) is need to compress the headset components to enable proper rotation of the fork in the headset. 



A flanged spring steel nut that seats in the fork or bars allowing the connection of a compression system. Not very common.  Most manufacturers have moved away from designing scooters with this component.



Hidden Internal Compression. A shim that is slipped over the top of the fork, a bolt is inserted into the top of the shim, the bolt threads into the starnut contained inside the top tube of the fork, the bolt is tightened to compress the headset components allowing fork rotation. 



 Inverted Compression System. Uses a 200mm bolt inserted into the base of the fork tube, the bolt then threads into a starnut contained in the base of a standard diameter bar (1 ¼’) enabling proper rotation of the headset components.  Not very common.


Standard Compression System.  It consists of the clamp, an optional shim if needed, the compression cap, the compression bolt, and 4 clamp bolts.   


Chromoly, Aluminum, Steel, and Titanium bars come in various lengths and widths welded together to create a stylish control device used for steering, spinning and lifting the scooter.  Comes in T Bar, Y Bar, with or without gussets.  

Oversized Bar 


Common name for a bar with a 1 3/8” down tube, the cross bar is 7/8”

Standard Bar

 Common name for a bar with a 1 1/4’ down tube, the cross bar is 7/8”. 



Available in standard and oversize with or without a shim, used right above the base of the bar after installing onto the fork the clamp uses bolts to pinch the bars and put pressure on the fork, allowing proper steering control.  Comes in 1 bolt to 5 bolt.  Used to hold bar property.


 Various shaped rubber material applied onto the end of the cross bar to provide style, control while reducing vibration and hand fatigue.  Nowadays comes in various lengths and plenty of colors.

Bar Ends

 Either metal or plastic insert into the sides of the bar.  Prevents the metal on the bars from getting jagged and if not used properly, may injure the hands. 


 Two metal cores surrounded by poly urethane.  Common sizes are 100mm, 110mm diameter, 120mm and 125mm.  Durometer ranges from A30 (soft) to D100 (hard), rebound is also important, more rebound carries more energy and is faster but you lose traction.  Most common is 88.  Wheel thickness now come in 24mm to 30mm. The wheels are held on the scooter by the axles one in front and one in the back.  

Wheel Bearings

 Two wheel bearings that are pressed into the wheels core, one on each side with a spacer in between, the spacer prevents the bearings from being pushed into the wheel core upsetting the proper alignment of the bearings and axle.  Most manufacturers now have wheel bearings included in their wheels.


There are five classes from largest to smallest tolerances: 1, 3, 5, 7, and 9, the higher the number the greater the speed capabilities, The ABEC rating does not specify other critical factors, such as smoothness, ball precision or quality/type of steel used. Most common are the abec 9  


 A foot controlled device bolted to the back of the deck used to control and stop the scooter.  

Brake Fender

A small metal device installed with at the rear of the deck.  Allowing you to land on this device and not create flat spots on your wheels.   It prevents you from stomping on your brake as this replaces most.



Grade A machined hardware used to install the rear wheel into the deck and the front wheel into the fork.



Attached to the fork and rear of the deck with longer axles, used to grind and stall on various objects.  Allows for more tricks to be done.

Deck Spacers

 Installed on each side of the rear wheel, deck spacers are designed to center the rear wheel in the deck.  Most manufacturers have replaceable deck spacers as this is a common replacement part.

Grip Tape

An abrasive material with an adhesive on the back designed to be installed on the top surface of the deck to give a rider maximum foot control.   Basically sand paper  with adhesive.


Fully built functional and fully assembled scooter. 


 Used to lubricate a metal or concrete obstacle when riding your scooter.  It allows the deck to gracefully glide on a surface.


 Distance in between the front and rear wheels. 



Miscellaneous pieces used to fasten or affix the scooter.  Could be axles, spacers, compression bolts, clamp bolts, crown race, headset spacers, etc. 

Riding Style

Riders can choose to ride the skatepark or street.  It's whatever you feel most comfortable with.