In-Depth Guide: ICS, HIC, IHC and SCS Freestyle Scooter Compression

Compression is one of the most important parts of a freestyle scooter. It keeps key components such as the bars, fork, headset and deck assembled and properly adjusted. The wrong system, poor installation or incorrect adjustment can cause play, rattling, stiff steering and premature wear.

This guide explains ICS, HIC, IHC and SCS in detail: how they differ, which parts they need and what to check before buying bars, a fork, a clamp or compression.

Before you start: compression is part of a complete setup

Simply saying “I want SCS” or “I want IHC” is not enough. Each system depends on several parts working together:

• Bars: standard or oversized, with or without a slit.
• Fork: compatible with your compression system.
• Clamp or SCS: the right size for your bar diameter.
• Headset: in good condition and properly adjusted.
• Shims or adapters: may be needed for your setup.

Real compatibility means checking all these parts together.

What compression actually does

Compression reduces play between the fork, headset and bars. It lets the steering turn smoothly without the scooter feeling loose. Correct adjustment makes a scooter feel more solid, quieter and more dependable.

Poor adjustment can cause:

• Play in the headset.
• Metallic rattling or a scooter that is no longer dialed.
• A rough or overtightened headset.
• Bars moving inside the clamp.
• Bolts that repeatedly loosen.

ICS: Inverted Compression System

ICS stands for Inverted Compression System. This lightweight system uses a long bolt inserted from below or through the fork, tightening against a star nut or anchor installed inside the bars.

In simple terms, compression draws the bars and fork together to eliminate headset play.

Parts usually needed for ICS

• An ICS-compatible fork.
• Standard bars with a slit.
• A star nut or anchor inside the bars.
• A regular clamp to hold the bars.

ICS advantages

• Lightweight.
• A clean, simple feel when properly installed.
• Useful for setups designed to reduce weight.

ICS disadvantages

• Installation and adjustment can be less convenient.
• Correct star nut placement is essential.
• Less practical if you frequently swap parts.
• Less common in modern setups built for heavy impacts.

HIC: Hidden Integrated Compression

HIC stands for Hidden Integrated Compression. This classic freestyle scooter system uses a shim or sleeve over the fork. The bars slide over it and a clamp holds them in place.

HIC is known for being relatively simple, strong and easy to maintain when every part is compatible.

Parts usually needed for HIC

• A HIC-compatible fork.
• A HIC shim or sleeve.
• Oversized bars, usually with a slit.
• A clamp matching the bar size.

HIC advantages

• A strong, proven system.
• Lighter than SCS in many setups.
• Relatively simple maintenance.
• A good option for a solid setup without as much extra weight.

HIC disadvantages

• Usually requires oversized bars.
• The bars need a slit so the clamp can tighten properly.
• Not compatible with every fork or handlebar.

IHC: Internal Hidden Compression

IHC stands for Internal Hidden Compression. It is similar to HIC but more compact and lightweight. Compression is integrated more closely into the fork, so it is common in lightweight complete scooters.

IHC is common in park setups, beginner and intermediate scooters, and builds focused on low weight.

Parts usually needed for IHC

• An IHC-compatible fork.
• An IHC shim if required by the system.
• Standard bars with a slit, or bars compatible with the particular system.
• A standard or oversized clamp, depending on the outside diameter of the bars and shim.

IHC advantages

• Lightweight.
• Very common in complete scooters.
• Suitable for responsive, easy-to-handle setups.
• Often simpler for beginners who have not started making major upgrades.

IHC disadvantages

• Not all bars are compatible.
• May be less suitable for very heavy street setups or repeated large impacts.
• The internal bar diameter and fork dimensions need careful checking.

SCS: Standard Compression System

SCS stands for Standard Compression System. The clamp and compression operate in one component, usually a four-bolt clamp that holds the bars while compressing the fork and headset.

SCS is widely used for street and heavy-impact setups because it feels solid and provides strong clamping.

Parts usually needed for SCS

• A compatible threadless fork.
• An SCS clamp.
• Bars without a slit, or bars correctly prepared for SCS.
• A shim if needed to fit standard or oversized bars.

SCS advantages

• Very strong and dependable.
• Excellent for street, drops, gaps and heavy landings.
• Does not require a bar slit when the setup is correctly assembled.
• A very solid feel when properly adjusted.

SCS disadvantages

• Heavier than other systems.
• Do not directly use slitted bars without checking the required adaptation.
• Switching from HIC or IHC may require cutting the bars or using an adapter.
• Usually more expensive than a regular clamp.

Quick comparison

System	Common use	Typical bars	Slit	Main strength
ICS	Lightweight / older setups	Standard	Yes	Low weight
HIC	Strong, simple setups	Oversized	Yes	Strength with less weight than SCS
IHC	Lightweight completes / park / all-around	Standard or compatible with the shim	Yes	Low weight and simplicity
SCS	Street / heavy impacts	Unslitted or adapted	Not directly	Maximum solidity

Common mistakes when buying compression

• Buying SCS for slitted bars without knowing they may need cutting or an adapter.
• Buying oversized bars for IHC without checking their internal diameter.
• Buying a regular clamp when you actually need SCS.
• Changing forks without checking compatibility with HIC, IHC, ICS or SCS.
• Assuming “standard” and “oversized” mean the same thing across every brand.
• Overtightening compression and damaging or binding the headset.

How to identify your system

Look for these clues:

• A large four-bolt clamp is probably SCS.
• Slitted bars with a regular clamp may use HIC, IHC or ICS.
• Oversized bars with a large shim over the fork may use HIC.
• A lightweight complete scooter may use IHC or ICS, depending on the model.
• If you are unsure, send photos of the compression, fork, clamp and lower bar section.

Which system is right for you?

No system is perfect for everyone. Your riding, weight, current parts and budget all matter.

• Street and heavy impacts: SCS is often a very solid choice.
• Lightweight setups: IHC or ICS may make sense.
• A balance of strength and weight: HIC can be a good option.
• Beginners: it usually makes sense to keep the original system until you understand compatibility.

Checklist before buying

Before buying bars, a fork, a clamp or compression, check:

• Your current compression system.
• Whether your bars are standard or oversized.
• Whether your bars have a slit.
• Your fork.
• Your clamp.
• Your headset type and condition.
• Whether you need a shim, adapter or bar cut.

Conclusion

ICS, HIC, IHC and SCS solve the same problem: keeping scooter steering secure. They differ in how they work, the parts they need and the riding they suit.

Check compatibility before changing parts. Good compression can keep your scooter dialed; an incompatible combination can cause play, noise and wear.

Remoto Film Assistant

If you do not know which system your scooter uses, send us these details on WhatsApp:

• A photo of your clamp.
• A photo of the lower section of your bars.
• A photo of the fork and compression.
• Your scooter model or current parts.
• The part you want to change.

Check compatibility on WhatsApp

Browse available parts at RemotoFilm

Sources

This guide was checked against public technical references on freestyle scooter compression, particularly SkatePro's compression guide, which describes compression's general purpose and the differences between HIC, IHC, SCS and ICS.

Source: SkatePro — Pro Scooter Compression Guide