# Rollerblade Hydrogen Pro wheels 100 mm X-Firm (8 pcs)

Rollerblade Hydrogen Pro 100 mm X-Firm is 8 wheels intended for long-distance skating and sprints on 4 × 100 mm skates. X-Firm is the middle hardness of the series: harder than Firm, so it rolls faster on an even surface, and softer than XX-Firm. Before ordering, check that the frame takes 100 mm wheels.

- Price: 779.99 PLN
- Brand: Rollerblade
- Availability: in stock, ships within 24 h
- EAN: 8050459819007
- Page: https://bogdanca.pl/en/rollerblade-hydrogen-pro-wheels-100-mm-x-firm-8-pcs.html
- As of: 2026-10-23

## Who it’s for

- You train over long distances on 4 × 100 mm skates and are replacing the whole set of wheels.
- You skate fast, including sprints, and want wheels harder than Firm but not the hardest in the series.

## When to choose something else

- You mostly skate on wet or uneven asphalt – [Hydrogen Pro 100 mm Firm](https://bogdanca.pl/en/rollerblade-hydrogen-pro-wheels-100-mm-firm-8-pcs.html) will give more grip.

## Key features

- **X-Firm hardness** — The middle of the Hydrogen Pro series scale: faster rolling than the Firm version while keeping grip on even asphalt.
- **100 mm diameter** — A large wheel holds speed after a push, which matters over a long distance.
- **Set of 8** — Eight wheels is a full replacement on a pair of four-wheel inline skates – the whole set wears evenly.

## Specifications

| Specification | Value |
|---|---|
| Brand | Rollerblade |
| Type | skate wheels |
| Model | Hydrogen Pro |
| Diameter | 100 mm |
| Hardness | X-Firm |
| Quantity | 8 (set for a pair of 4 × 100 mm skates) |
| Use | long-distance skating, sprints |

## Questions and answers

### Will these wheels fit my skates?

Yes, if you have four-wheel inline skates with a frame for 100 mm wheels. The easiest way is to check the print on your current wheels; if in doubt, we will help in our shop in Poznań or Wrocław.

### 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 a shop?

Yes, collection in person 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.