Quick Answer
Choose the GSI AH50 if you want a modest reach increase with maximum flexibility, or the GSI AH100 if you need a longer extension and are willing to pay more for the extra 50mm.
Reach: How Much Do You Need?
The primary difference between the AH50 and AH100 is the amount of shaft extension: 50mm versus 100mm. This directly affects how far the wheel sits from the base, which changes your driving position and comfort.
A 50mm extension is often enough to bring the wheel closer without drastically altering the geometry. A 100mm extension gives you a much longer reach, which can be useful for tall drivers or specific cockpit setups where the base is mounted far away.
Strength and Build Quality
Both extensions are designed for high strength, but the AH100 is constructed from billet 6061 aluminum, which is known for its excellent strength-to-weight ratio. The AH50 also uses a robust design with multiple mounting holes for flexibility.
If you're running a high-torque direct drive wheelbase, strength matters. The AH100's billet construction provides extra confidence under heavy loads, while the AH50 still offers solid performance for most setups.
Price and Value
The AH50 is priced at $89.99 (compare at $149.99), making it a budget-friendly way to extend your wheel. The AH100 costs $171.54 (compare at $234.99), which is roughly double the price for double the extension.
If you only need a small adjustment, the AH50 offers better value. If you need the extra reach, the AH100's price is justified by its longer length and premium construction.
Decision Rules: AH50 or AH100?
- If you need less than 60mm of extra reach: Choose the AH50. It provides a moderate extension that's often enough to improve comfort without changing the wheel's position too much.
- If you need more than 60mm of extra reach: Choose the AH100. The 100mm extension gives you the significant reach increase needed for tall drivers or deep cockpits.
- If you're on a budget: The AH50 is the more affordable option and still offers excellent build quality and mounting flexibility.
- If you run a high-torque direct drive base: Consider the AH100 for its billet 6061 aluminum construction, which provides extra strength under heavy loads. Verify that your wheelbase and wheel are compatible with a 70mm bolt pattern on the wheel side before purchasing.
Product Facts
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GSI AH50 Hub Extension: The GSI AH50 extends the shaft by 50mm and offers three 5mm non-threaded holes and three M5 threaded holes for both 70 and 50.8 PCD patterns. This flexibility lets you mount a variety of wheels with different bolt patterns, making it a versatile choice for multi-wheel setups.
GSI AH50 Hub Extension
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GSI AH100 Hub Extension: The GSI AH100 extends the shaft by 100mm and is constructed from billet 6061 aluminum for maximum strength and reliability. The longer reach and robust material make it ideal for drivers who need extra distance from the base without compromising durability.
GSI AH100 Hub Extension
Who Should Choose Which?
Best for
- Drivers who need a modest reach increase (AH50)
- Budget-conscious sim racers who still want a quality extension (AH50)
- Drivers needing a significant reach increase (AH100)
- Users with high-torque direct drive bases who want maximum strength (AH100)
Not for
- Drivers who only need a few millimeters of adjustment (consider a spacer instead)
- Users with wheelbases that require direct mounting on the base side (these extensions are not compatible with direct mounting on the Simucube base side)
