AH50 Hub Buying Guide: Fit, Compatibility and Mounting

By GSI - Gomez Sim Industries | High-End eSports Racing | Published: 2026-10-14

Category: Guias de Compra

Decide if the GSI AH50 Hub fits your wheel and base. Covers the 50mm extension, 82mm diameter, 70mm bolt pattern, threaded vs non-threaded sides, and who should skip it.

Quick answer

Buy the GSI AH50 Hub if you need 50mm more reach between your wheel and a direct drive base and you want a compact hub that works with a 70mm bolt pattern on both sides. Skip it if your wheel or base does not use a 70mm bolt pattern, if you already have enough reach, or if you expect the hub to change your wheel's button layout or display position. It is a spacer and adapter, not a performance upgrade.

What the AH50 Hub actually does

The AH50 Hub is a 50mm extension with an 82mm diameter. It has a 70mm bolt pattern on both sides. One side uses fully threaded holes and the other side uses non-threaded holes. That design lets you mount it in either orientation depending on whether you need threads in the hub or in the base-side plate. It is a mechanical interface part, so its job is to move your wheel farther from the base and to adapt mounting patterns, not to add force feedback or change how the wheel feels electronically.

Check compatibility before you order

The AH50 Hub is built around a 70mm bolt pattern on both sides, so the first check is whether your wheel and your base or quick release use that pattern. If either side uses a different pattern, this hub will not bolt up without an additional adapter. Because the hub is 50mm long, adding it also moves your wheel 50mm closer to you. Measure your current seating position and reach before buying. A 50mm change is noticeable and can fix a cramped cockpit or create one.

Confirm both your wheel side and base side use a 70mm bolt pattern.
Measure your current wheel-to-base gap and your seated reach before ordering.
Decide which side needs threaded holes and which needs non-threaded holes for your hardware.

Threaded vs non-threaded sides: how to choose orientation

One side of the AH50 Hub has fully threaded holes and the other has non-threaded holes. Use the threaded side where you want the bolt to thread directly into the hub and the non-threaded side where you plan to use a nut or a bolt that passes through to a threaded component on the other side. If you are unsure, match the orientation to how your existing wheel and base hardware is assembled. Do not force a bolt into a non-threaded hole expecting it to hold. If your current setup uses through-bolts with nuts, the non-threaded side is the correct face for that joint.

When a 50mm extension helps and when it hurts

A 50mm extension helps when your wheel sits too close to the base or your monitor, when your arms are cramped, or when you need clearance for a quick release or dash. It hurts when you already have a comfortable reach, when the added length puts the wheel too close to your body, or when the extra joint adds flex you do not want. More mounting interfaces mean more places for movement if hardware is not tightened correctly. If you are already happy with your driving position, adding this hub is unnecessary.

How the AH50 Hub fits into a GSI wheel setup

The AH50 Hub is designed as an addition to a GSI wheel, so it pairs naturally with GSI rims and direct drive bases that use a 70mm pattern. If you are building around a Hyper P1 or a Hyper P1 plus Simucube 2 Pro bundle, the hub is the part that changes reach and mounting orientation, while the wheel itself defines the controls and display. If you already run an Interlock Ultra and only need more distance from the base, the hub is the simpler purchase than changing the wheel.

Decision rules for buying the AH50 Hub

Rule 1: Match the bolt pattern first: The AH50 Hub uses a 70mm bolt pattern on both sides. If your wheel and base do not both use 70mm, this hub will not bolt up directly. Check both sides before ordering. If either side differs, plan for an adapter or choose a different solution.
Rule 2: Buy for reach, not for feel: The hub adds 50mm of length. It changes your seating position and clearance, not force feedback strength or wheel response. If your current reach is comfortable, skip it. If you are cramped or need clearance, it is the right tool.
Rule 3: Pick orientation based on your hardware: Use the threaded side where bolts should thread into the hub. Use the non-threaded side where you need through-bolts or nuts. Match the hub to your existing fasteners instead of forcing a bolt into the wrong hole type.
Rule 4: Keep the joint tight: Every added mounting interface is a place where movement can appear if hardware is loose. The hub adds one more joint between wheel and base. If you want the fewest possible interfaces, do not add an extension you do not need.

Product facts

AH50 Hub: The GSI AH50 Hub Extension provides a 50mm extension for improved ergonomics and customization, with a compact 82mm diameter and a 70mm bolt pattern on both sides. This is the core fit check: if your wheel and base use a 70mm pattern, the hub can add 50mm of reach without a large-diameter spacer.
AH50 Hub: One side of the AH50 Hub has fully threaded holes and the other has non-threaded holes, allowing for versatile mounting options. You can orient the hub to match your existing bolt and nut hardware instead of buying new fasteners.
Hyper P1 + Simucube 2 Pro Bundle: The Hyper P1 + Simucube 2 Pro Bundle pairs the Hyper P1 wheel with a Simucube 2 Pro base. If you run this bundle and need more reach or a different mounting interface, the AH50 Hub is the add-on that changes position without changing the wheel.
Interlock Ultra: The Interlock Ultra is the flagship of the Interlock system with a unique rim design and an LED Matrix built in. If you already own an Interlock Ultra and only want more distance from the base, the hub is the targeted fix rather than replacing the wheel.

Who should buy the AH50 Hub

Best for

Drivers whose wheel sits too close to the base or monitor and need 50mm more reach
GSI wheel owners with a 70mm bolt pattern on both the wheel and base side
Sim racers who need a compact 82mm-diameter hub with threaded and non-threaded mounting options

Not for

Anyone whose wheel or base does not use a 70mm bolt pattern
Drivers who are already comfortable with their current wheel position and clearance
Buyers expecting the hub to change wheel controls, display, or force feedback