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Scooter Compression Guide

For riders just getting into scootering, one of the most common questions is "what is the difference between SCS, HIC, and IHC compression?" Each of these compression systems are designed to keep your scooter's steering working smoothly.

IHC - Internal Hidden Compression

IHC Scooter Fork

Internal Hidden Compression is the most common system found today. It was pioneered by Envy scooters, and many other manufacturers have followed suit. You will find it on most complete scooters, and many top riders choose IHC. It’s benefits include low weight, ease of adjustability, and broad compatibility. A small shim sits under your handlebars, and it is adjusted with a bolt on top. If your scooter has IHC, here’s some things you may want to know:

  • Handlebars
    • Your handlebar will need a slit where it slides over the the compression
    • Standard steel bars fit on IHC
    • Oversized aluminum bars fit on IHC
    • Some scooters (older Madd Gear scooters) have an IHC sized fork with an oversized shim. It works the same as IHC, but fits oversized bars.
  • Clamps
    • If your bars are steel, you will need a standard 2-bolt clamp
    • If your bars are aluminum, you will need an oversized 2-bolt clamp
  • Forks
    • The compression is built into the fork

HIC - Hidden Internal Compression

HIC Scooter Compression

Hidden Internal Compression is a little less common today. It uses a larger oversized steel handlebar, so it is at a slight weight disadvantage. It is also very easy to adjust, and it very similar to IHC (except for its size). If your scooter has HIC, here’s some things you may want to know:

  • Handlebars
    • Your handlebar will need a slit where it slides over the the compression
    • Oversize steel bars fit on HIC
    • Aluminum bars are not compatible with HIC
  • Clamps
    • You will need an oversized 2-bolt clamp
  • Forks
    • Any SCS compatible fork is also HIC compatible
    • You will need an HIC kit, which is sold separate from the fork

SCS - Standard Compression System

SCS Scooter Compression

Standard Compression System integrates the compression and clamp into one piece. It is popular with expert street riders whose scooters take the most brutal impacts. The bars slide into the SCS compression instead of sliding over the fork. Because of this, the bar must not have a slit, which offers a slight strength advantage. Under the handlebars is a bolt that allows the compression to be adjusted. If your scooter has SCS, here’s some things you may want to know:

  • Handlebars
    • Your handlebar must not be slitted
    • If your bars are slitted, you may use a bar saver to reinforce the bottom of the handlebar
    • Some SCS’s fit standard bars, and some are built for oversize, so pay attention to which one you have. Some SCS’s include a shim to work with both
  • Forks
    • Most non-IHC forks are SCS compatible

There are a few other standards out there, such as threaded compression, ICS (Inverted Compression System), and Pytel Compression, but these are much less common. We understand that’s a lot of acronyms and standards to wrap your head around. If you have any questions about compression, or what parts you might need, don’t hesitate to contact us.

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