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

Rollerblade Hydrogen Pro 100 mm Firm is a set of 8 wheels for four-wheel inline skates with a frame for a 100 mm diameter. Firm is the softest of the series’ three hardnesses (Firm, X-Firm, XX-Firm), so it gives the most grip on poorer asphalt. You can check how the wheels match your frame in our shop in Poznań or Wrocław.

- Price: 779.99 PLN
- Brand: Rollerblade
- Availability: in stock, ships within 24 h
- EAN: 8050459819014
- Page: https://bogdanca.pl/en/rollerblade-hydrogen-pro-wheels-100-mm-firm-8-pcs.html
- As of: 2026-10-23

## Who it’s for

- You have 4 × 100 mm skates and want to replace a worn set in one go.
- You often skate on rough, patched or damp asphalt and grip matters more to you than maximum roll.

## When to choose something else

- You mostly skate on a dry, smooth track – [Hydrogen Pro 100 mm X-Firm](https://bogdanca.pl/en/rollerblade-hydrogen-pro-wheels-100-mm-x-firm-8-pcs.html) and [XX-Firm](https://bogdanca.pl/en/rollerblade-hydrogen-pro-wheels-100-mm-xx-firm-8-pcs.html) will be harder.

## Key features

- **Firm hardness** — The softest variant in the Hydrogen Pro series: it holds uneven and slippery surfaces better than the X-Firm and XX-Firm versions.
- **100 mm diameter** — A large wheel keeps rolling for a long time after each push and goes over bumps more gently than typical urban wheels.
- **Set of 8** — You replace all the wheels on a pair of four-wheel inline skates at once, so they wear evenly.

## Specifications

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

## Questions and answers

### Will these wheels fit my skates?

Yes, if the frame on your skates takes four 100 mm wheels. Check the print on your current wheels or the largest diameter allowed for the frame; if in doubt, bring your skates to the shop.

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

Yes, you have 14 days to withdraw from the contract (return) 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.