# Rollerblade Hydrogen Pro wheels 110 mm XX-Firm (8 pcs)

Rollerblade Hydrogen Pro 110 mm XX-Firm is 8 racing wheels with the highest hardness in the series, intended for sprints, track skating, marathons and competitions. The M-TECH Dual-Pour construction combines a soft inner layer with a harder outer one, and the 9-spoke Turbine Core stabilises the wheel at the highest speeds. Made in the USA, without bearings and spacers.

- Price: 779.99 PLN
- Brand: Rollerblade
- Availability: in stock, ships within 24 h
- EAN: 8050459819021
- Page: https://bogdanca.pl/en/rollerblade-hydrogen-pro-wheels-110-mm-xx-firm-8-pcs.html
- As of: 2026-10-23

## Who it’s for

- You race on the track or in sprints and speed on the straights matters to you.
- You skate fast marathons on smooth asphalt and want wheels that roll with the least possible resistance.
- You have 4 × 110 mm skates and are replacing the whole set before the racing season.

## When to choose something else

- The route is sometimes wet, uneven or damaged – the hardest wheel loses grip more easily there; [Hydrogen Pro 110 mm X-Firm](https://bogdanca.pl/en/rollerblade-hydrogen-pro-wheels-110-mm-x-firm-8-pcs.html) will work better.
- You skate recreationally on ordinary urban surfaces – on uneven asphalt softer wheels give a more comfortable ride; see [skate wheels](https://bogdanca.pl/en/wheels-and-bearings/skate-wheels).

## Key features

- **XX-Firm hardness** — The hardest variant in the series gives maximum roll and stability on straights; it works best on a smooth, even surface.
- **M-TECH Dual-Pour** — The soft inner layer improves grip, and the harder outer layer provides speed and slower wear.
- **Turbine Core with 9 spokes** — Stabilises the wheel and limits vibration, so you keep control even at the highest speeds.
- **Polyurethane compound from the USA** — A formula aimed at energy return and a long wheel life.
- **110 mm diameter** — A large wheel carries a long way after a push and holds the pace on long straights.

## Specifications

| Specification | Value |
|---|---|
| Brand | Rollerblade |
| Model | Hydrogen Pro |
| Diameter | 110 mm |
| Hardness | XX-Firm |
| Quantity | 8 (set for a pair of 4 × 110 mm skates) |
| Core | Turbine Core, 9 spokes |
| Technology | M-TECH Dual-Pour: soft inner layer, harder outer layer |
| Use | track, sprints, marathons, competitions; smooth surfaces |
| Country of manufacture | USA |
| Bearings and spacers | not included in the set |

## In the box

- 8 Rollerblade Hydrogen Pro 110 mm XX-Firm wheels

## Questions and answers

### How does XX-Firm differ from X-Firm?

In hardness. XX-Firm is harder and aimed at maximum roll on a smooth surface; X-Firm gives more grip and copes better with harder conditions.

### Are 8 wheels enough for a pair of skates?

Yes, for a pair of 4 × 110 mm skates – four wheels per skate. For three-wheel 3 × 110 mm skates you need 6 pieces.

### Are bearings and spacers included?

No. The box contains 8 wheels only; you swap the bearings and spacers over from your old set or buy them separately.

### Is XX-Firm suitable for a lighter skater?

Usually not. The lighter the skater, the softer the wheel they need to keep grip. The Hydrogen Pro 110 mm Firm version was made with teenagers and lightweight skaters in mind.

### 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.

## 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.