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

Rollerblade Hydrogen Pro 100 mm XX-Firm is a set of 8 wheels with the highest hardness in the series, for four-wheel inline skates with a 100 mm frame. A hard wheel rolls with little resistance on a smooth, dry surface, but grips less well on uneven and wet asphalt than the X-Firm and Firm versions. Collection in person in Poznań or Wrocław.

- Price: 779.99 PLN
- Brand: Rollerblade
- Availability: in stock, ships within 24 h
- EAN: 8050459818994
- Page: https://bogdanca.pl/en/rollerblade-hydrogen-pro-wheels-100-mm-xx-firm-8-pcs.html
- As of: 2026-10-23

## Who it’s for

- You skate fast on 4 × 100 mm skates, mainly on smooth, dry asphalt.
- You want the hardest wheel possible, one that wears slowly and rolls with little resistance.

## When to choose something else

- You often skate on wet or damaged asphalt – choose [Hydrogen Pro 100 mm X-Firm](https://bogdanca.pl/en/rollerblade-hydrogen-pro-wheels-100-mm-x-firm-8-pcs.html) or [Firm](https://bogdanca.pl/en/rollerblade-hydrogen-pro-wheels-100-mm-firm-8-pcs.html).

## Key features

- **XX-Firm hardness** — The hardest variant in the series: the least rolling resistance and slower wear, at the cost of grip on slippery surfaces.
- **100 mm diameter** — A large wheel passes smoothly over small bumps and carries you a long way after each push.
- **Set of 8** — Enough for a pair of four-wheel inline skates – four wheels per skate.

## Specifications

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

## Questions and answers

### Will these wheels fit in my skates?

Yes, if the frame is designed for four 100 mm wheels. They will not fit a frame for a smaller diameter; check the print on your current wheels or ask in the shop.

### 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.