GSI AH100 Hub | 100 mm Wheel Hub Extension 70 mm PCD

Name: GSI AH100 Hub 100 mm – Steering Wheel Hub Extension
Brand: GSI
SKU: GSI.AH100-R
Price: 129.99 EUR
Availability: InStock

GSI AH100 100 mm wheel hub extension in anodised aluminium, main view

Front view of the GSI AH100 hub showing the 70 mm PCD bolt pattern

Close-up of the six threaded M5 holes on the GSI AH100 hub extension

Non-threaded face of the GSI AH100, ready to bolt onto the steering wheel

GSI AH100 wheel hub extension in black anodised finish on a neutral background

GSI AH100 hub in red anodised finish, angled view

GSI AH100 hub in blue anodised finish, angled view

GSI AH100 hub in gold anodised finish on a neutral background

GSI AH100 hub in green anodised finish, angled view

GSI AH100 hub in purple anodised finish, angled view

Gun Metal grey finish of the GSI AH100 wheel hub extension

Close-up of the CNC-machined billet 6061 aluminium body of the GSI AH100

The six M5 x 12 mm screws supplied with the GSI AH100 hub extension

Price - 24%

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Inventory on the way

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The GSI AH100 is a 100 mm wheel hub extension in billet 6061 aluminium for sim racing, with a 70 mm PCD bolt pattern on both faces, designed to bring the wheel closer to the driver and fine-tune the driving position.

It sits between the wheelbase quick release and the steering wheel, adding 100 mm of reach without giving up rigidity. Its dual hole pattern — one face with six threaded holes, the other non-threaded — lets you pair virtually any wheel with any base that follows the 70 mm standard. Every unit is CNC-machined from solid aluminium billet and colour anodised.

Key features of the GSI AH100

100 mm shaft extension to correct the distance between base and wheel in deep cockpits.
70 mm PCD pattern on both faces, the standard used by most high-end direct drive wheelbases and sim racing wheels.
One threaded face and one non-threaded face for complete freedom when mounting.
Billet 6061 aluminium, CNC-machined and finished in coloured anodising.
Just 0.16 kg, a negligible weight against the inertia of the wheel and base assembly.
Supplied with six M5 × 12 mm screws for mounting.

Technical specifications

Specification	Detail
Extension length	100 mm
Bolt pattern (PCD)	70 mm on both sides
Hole type	One face threaded / one face non-threaded
Material	CNC-machined billet 6061 aluminium
Finish	Coloured anodising
Weight	0.16 kg
Screws included	6 × M5 × 12 mm
Manufacturer warranty	12 months

Compatibility

Works with any sim racing wheel or base using the 70 mm PCD (6 × M5) bolt pattern.
Designed around GSI wheels, but compatible with any wheel that follows the 70 mm standard.
It is a passive mechanical accessory: no electronics, no software or firmware required.
Check your quick release pattern before ordering: if your base or wheel uses a PCD other than 70 mm you will need an additional adapter.

Frequently asked questions

Which bases and wheels is the GSI AH100 compatible with?

With any wheel or base using the 70 mm PCD bolt pattern with six M5 screws, which is the standard on most high-end direct drive wheelbases. The AH100 carries that pattern on both of its faces.

What is the difference between the AH100 and the AH50?

Only the length: the AH100 extends the shaft by 100 mm and the AH50 by 50 mm. Material, 70 mm PCD pattern and hole layout are identical. Choose the AH100 if the wheel sits too far away in a deep cockpit, and the AH50 if you only need a small adjustment.

Does it include the screws needed to mount it?

Yes, every AH100 ships with six M5 × 12 mm screws. Those screws serve the threaded face of the hub; for the non-threaded face you will need the hardware from your base or quick release.

Why is one face threaded and the other not?

So it can be mounted either way round. The threaded face takes screws directly, while the plain face lets the screws pass through to whichever part carries the thread. That way the same hub covers very different wheel and base combinations.

Does adding the AH100 affect force feedback?

It weighs 0.16 kg and the billet 6061 aluminium construction introduces no noticeable flex, so the effect on force feedback is minimal. It does slightly increase the leverage relative to the base shaft, which is most noticeable on high-torque wheelbases.

Which colours are available?

At Simufy you can choose between black, red, blue, gold, green, purple and Gun Metal grey, all in an anodised finish. Pick your colour from the selector on this page.

Buying your wheel hub extension from Simufy means buying with full guarantees

Official premium sim racing distributor in Spain and Portugal — over 70 brands
The only Official Fanatec out-of-warranty Repair Centre in Europe
Simucube Premium Reseller — one of only four in Europe
Shipping from our own 5,000 m² warehouse and Barcelona showroom
Specialised technical support and official warranty on every product
Tailored financing: leasing and renting available

Frequently Asked Questions

A product in PRE-ORDER means it's not yet available for immediate delivery, but is on its way and can be pre-ordered before its official availability. This guarantees that you'll have access to the product once it's in stock. We recommend placing a PRE-ORDER to avoid missing out and skipping the next batch.

Pre-order product availability dates are listed on the relevant product page or on our #pre-orders Discord channel: https://discord.gg/simufy

When a product is in stock, it means it's available in our warehouses and can be shipped immediately after the order is placed.

Absolutely yes. The products offered are carefully selected to meet high quality standards. This ensures that the materials used are durable, safe, and fit for their intended purpose.

You can find out if the product you want is in stock by checking the product page. Typically, a message will appear indicating its availability, such as "Shipping immediately" or units available. If it's not in stock, one of these statuses will typically appear: - Out of stock: No units are available and you may have to wait for them to be restocked. - Pre-order: The product is available for reservation before it arrives in the warehouse.

No, every order is shipped in a single shipment. If the order contains both in-stock and out-of-stock items, the order will be shipped as soon as all items are in stock. If you wish to receive in-stock items immediately, you must place multiple orders or request an additional shipping charge.

VISA or MasterCard credit cards, PayPal, Klarna or bank transfer

Simufy offers all customers the option to defer payment for any or all of their orders through the financial institution Klarna.

Klarna offers financing valid for orders up to €1,500 and up to 3 interest-free installments.

Yes, as long as the product is received in the same condition as it was sent. The refund will be issued after manual verification of the returned product's conformity, using the same method used for payment. For more information, please consult our Return Policy.