# Rollerblade Hydrogen Pro wheels 90 mm X-Firm (8 pcs)

Rollerblade Hydrogen Pro 90 mm X-Firm is a set of 8 versatile wheels for 4 × 90 mm skates. The elliptical profile and the middle hardness of the series work well on smooth, hard, dry asphalt. A 90 mm diameter rolls better than typical urban wheels, yet is more manoeuvrable than larger ones. You can check the match in our shop in Poznań or Wrocław.

- Price: 714.99 PLN
- Brand: Rollerblade
- Availability: temporarily unavailable
- EAN: 8050459866865
- Page: https://bogdanca.pl/en/rollerblade-hydrogen-pro-wheels-90-mm-x-firm-8-pcs.html
- As of: 2026-10-23

## Who it’s for

- You have 4 × 90 mm skates and want to replace the set with harder wheels from the Hydrogen Pro series.
- You skate mainly on even, dry asphalt – cycle paths, smooth promenades, the track.

## When to choose something else

- You often skate on wet or uneven asphalt – in the [skate wheels](https://bogdanca.pl/en/wheels-and-bearings/skate-wheels) section choose a softer hardness.

## Key features

- **Elliptical profile** — A rounded, tapering tread has a smaller contact patch with the asphalt, so the wheel rolls more easily and enters a turn smoothly.
- **X-Firm hardness** — The middle hardness of the Hydrogen Pro series, intended for a smooth, hard and dry surface.
- **90 mm diameter** — A compromise between the manoeuvrability of smaller wheels and the roll of large ones – it works well for faster skating in the city and on routes.

## Specifications

| Specification | Value |
|---|---|
| Brand | Rollerblade |
| Type | skate wheels |
| Model | Hydrogen Pro |
| Diameter | 90 mm |
| Hardness | X-Firm |
| Quantity | 8 (set for a pair of 4 × 90 mm skates) |
| Profile | elliptical |
| Use | all-round skating on smooth, hard and dry surfaces |

## Questions and answers

### Will these wheels fit my skates?

Yes, if the frame takes four 90 mm wheels. Check the print on the wheels you have now or the largest diameter allowed for the frame; in the shop we will help you verify it.

### Can I return the wheels?

Yes, you have 14 days to withdraw from the contract (return) without giving a reason. The buyer covers the return shipping.

### Can I collect the wheels in person?

Yes, collection at our shop in Poznań or Wrocław is free of charge.

## Buying

- Delivery: from 15.00 PLN, in-store pickup in Poznań and Wrocław free of charge
- Returns: 14 days
- Seller: Bogdanca Sp. z o.o.