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

Rollerblade Hydrogen Pro 90 mm XX-Firm is eight wheels for four-wheel inline skates with a 90 mm frame, in the hardest variant in the series. You choose this set for even, dry asphalt, where light rolling and slow tread wear matter. On slippery and patched routes softer wheels will work better.

- Price: 714.99 PLN
- Brand: Rollerblade
- Availability: in stock, ships within 24 h
- EAN: 8050459866858
- Page: https://bogdanca.pl/en/rollerblade-hydrogen-pro-wheels-90-mm-xx-firm-8-pcs.html
- As of: 2026-10-23

## Who it’s for

- You skate 4 × 90 mm skates on even, dry routes and want wheels that wear slowly.
- You are looking for a harder alternative to the X-Firm version in the same diameter.

## When to choose something else

- You skate on wet or uneven asphalt – consider [Hydrogen Pro 90 mm X-Firm](https://bogdanca.pl/en/rollerblade-hydrogen-pro-wheels-90-mm-x-firm-8-pcs.html) or softer [skate wheels](https://bogdanca.pl/en/wheels-and-bearings/skate-wheels).

## Key features

- **XX-Firm hardness** — The hardest version in the Hydrogen Pro series: low rolling resistance and a durable tread on smooth asphalt, weaker grip on wet.
- **90 mm diameter** — Rolls better than typical urban wheels, and stays more manoeuvrable than 100–110 mm wheels.
- **Set of 8** — Four wheels per skate, i.e. a replacement of the whole set on a pair of four-wheel inline skates.

## Specifications

| Specification | Value |
|---|---|
| Brand | Rollerblade |
| Type | skate wheels |
| Model | Hydrogen Pro |
| Diameter | 90 mm |
| Hardness | XX-Firm |
| Quantity | 8 (set for a pair of 4 × 90 mm skates) |

## Questions and answers

### Will these wheels fit in my skates?

Yes, if the frame takes four 90 mm wheels. Before ordering, check the print on your current wheels; if in doubt, bring your skates to our shop in Poznań or Wrocław.

### Can I return the wheels if they do not fit?

Yes, within 14 days you can withdraw from the contract without giving a reason. The buyer covers the return shipping.

### Can I collect my order in person?

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

## 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.