Quick Summary
The ZTZ 20×4.0 inch fat tire eBike air suspension front fork is a front fork for 20 inch fat tire bikes with a QR 9x135mm setup. The stated specs also include 130 mm travel, a 28.6 mm thread-less straight steerer, and disc brake compatibility as listed in the product details.
This fork is positioned for buyers who need to match wheel size, axle spacing, steerer size, and brake type on the bike they already own. The selected bike model and measurements should be checked before choosing an offer.
Key Details
| Detail | Product information and buyer relevance |
|---|---|
| Brand | ZTZ. Useful for matching the exact fork being considered. |
| Product type | Air suspension front fork. Confirms this is a replacement fork for the front end of the bike. |
| Wheel size | 20 x 4.0 inch fat tire use. Check that the bike matches this size. |
| Axle spacing | QR 9 x 135 mm. This is a key fit check for the front wheel and fork spacing. |
| Travel | 130 mm. Buyers should compare this travel figure with the ride feel and setup they want. |
| Steerer | 28.6 mm / 1-1/8 inch thread-less straight steerer, 220 mm long. Confirm this matches the bike frame and headset setup. |
| Inner tube | 34 mm inner tube. A relevant measurement for fork sizing. |
| Brake type | 74 mm disc brake type. Check brake compatibility before buying. |
What to Compare Before Buying
- Wheel size: This fork is listed for 20 x 4.0 inch fat tire use. Match the bike’s wheel size before ordering.
- Axle spacing: The stated QR size is 9 x 135 mm. Compare that with the wheel and hub setup already on the bike.
- Steerer size: The fork uses a 28.6 mm / 1-1/8 inch thread-less straight steerer. Confirm the frame and headset requirements.
- Brake type: The fork is listed with a 74 mm disc brake type. Check that the brake setup is compatible.
- Travel: The stated travel is 130 mm. Compare that figure with the setup and ride feel you want.
Compatibility, Size and Fit
This fork is centered on fit details, so compatibility matters more than general style. The key checks are the 20 x 4.0 inch fat tire format, QR 9 x 135 mm axle spacing, 28.6 mm thread-less straight steerer, and 74 mm disc brake type.
Because the product description mentions a range of bike types, the safest approach is to confirm the exact bike model and measurements before choosing a version.
Before You Decide
Confirm the wheel size, axle spacing, steerer size, and brake type against your bike before choosing an offer. If any one of those measurements does not match, this fork is not the right fit. The travel figure is also worth checking if the ride setup matters to you.
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