Quick Summary
The ZTZ 20 x 4.0 Fat Tire eBike Air Suspension Front Fork is a front fork for fat tire bikes with a QR 9x135mm setup. It is described as a double crown suspension fork with air shock absorption and a black finish. The stated dimensions and setup details matter most when you are checking fit for a specific bike.
Key Details
| Detail | Product information and buyer relevance |
|---|---|
| Brand | ZTZ |
| Product type | Air suspension front fork for fat tire bikes |
| Wheel size | 20 x 4.0 |
| Axle spacing | QR 9x135mm |
| Steerer | 1-1/8 inch thread-less straight steerer, 220 mm long |
| Travel | 180 mm |
| Disc brake type | 74 mm disc brake type |
| Finish | Black |
What to Compare Before Buying
- Fork fit: Match the QR 9x135mm axle spacing and the 1-1/8 inch thread-less straight steerer to your bike.
- Wheel and tire size: This model is described for 20 x 4.0 fat tire bikes, so confirm that wheel and tire setup before choosing it.
- Brake setup: Check that your brake setup matches the stated 74 mm disc brake type.
- Travel: The stated 180 mm travel is a key dimension to compare with the ride feel and fork space you want.
- Bike type: The description points to use on several bike styles, so exact frame and fork compatibility still needs to be checked.
Compatibility, Size and Fit
This fork is described with a 20 x 4.0 fat tire setup, QR 9x135mm spacing, and a 1-1/8 inch thread-less straight steerer that is 220 mm long. Those are the main fit checks before purchase. The brake mount is listed as 74 mm disc brake type, so confirm your brake hardware matches that setup.
The black finish and double crown design are part of the fork’s description, but fit should still be confirmed against your frame and wheel setup rather than appearance alone.
Before You Decide
Confirm the wheel size, axle spacing, steerer style, and brake type before choosing this fork. It is also worth checking that the 180 mm travel and 220 mm steerer length match your bike’s frame and front-end setup. Follow the manufacturer’s installation instructions for the exact model.
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