# Bicycle helmet rock machine MTB Sport Black S/M 54–58 cm

**URL:** https://aio.lv/en/product--rock-machine-rf050501--7913654
**Data updated:** 2025-12-30 06:11 (EET)
**Category:** Kids’ Ride-On Accessories
**Manufacturer:** rock machine
**Manufacturer code:** RF050501
**EAN:** 8592842821575
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 43.99 €
**Prices and availability valid until:** 2026-07-26 23:59
**Price without VAT (21%):** 36.36 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--rock-machine-rf050501--7913654

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Wednesday | free |
| Pickup points | 06.07.2026 | 1.89 EUR |
| Courier delivery to door | 06.07.2026 | 4.99 EUR |

## Summary description

Rock Machine MTB Sport bicycle helmet in black, size S/M (54–58 cm). Designed for mountain biking and recreational cycling, it provides head protection with a size-adjustable fit for medium heads. The helmet suits everyday trail riding, commuting and off-road use, offering practical safety and comfort for riders seeking reliable protection.

## Long description

Rock Machine MTB Sport helmet in black, size S/M (54–58 cm), is a medium-fit bicycle helmet designed for mountain biking and recreational cycling. Constructed with an EPS inner layer, it offers impact protection and an adjustable fit via vertical and horizontal adjustment systems to accommodate different head shapes within the S/M range.
Advantages
The helmet features an EPS construction for reliable energy absorption on impact and an integrated vertical and horizontal adjustment system for a secure, personalized fit. Its black finish is low-profile and practical for multi-purpose use, and the S/M size covers a common medium head circumference range of 54–58 cm.
Suitable for
 Mountain biking and trail riding
 Recreational cycling and commuting
 Off-road cycling and leisure rides
Key specifications
 Model: MTB Sport
 Brand: Rock Machine
 Size: S/M (54–58 cm)
 Material: EPS (expanded polystyrene) inner
 Color: Black
 Adjustment: Vertical and horizontal adjustment system
 MPN: RF050501
 EAN: 8592842821575
How to use
Place the helmet on the head so it sits level and covers the forehead without tilting backwards. Use the vertical and horizontal adjustment systems to tighten the fit until the helmet feels secure but comfortable. Fasten the chin strap and adjust its length so that two fingers fit between the strap and the chin. Before each ride, check that the adjustment mechanisms and straps are functioning and that the helmet shows no visible damage.
Usage recommendations
Choose the S/M (54–58 cm) size if your head circumference falls within that range. Replace the helmet after a significant impact or if it shows cracks, compression of the EPS liner, or other structural damage. Clean with mild soap and water and avoid solvents or high heat.

## FAQ

### How much does the Bicycle helmet rock machine MTB Sport S/M 54–58 cm cost, and is it available for purchase?

The price is 43.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 6 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on Wednesday at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All rock machine products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized rock machine service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/7913654/51073931_large.webp