# BELL 4FORTY AIR MIPS mountain bike helmet — BELL — size S (52–56 cm) solid matte black

**URL:** https://aio.lv/en/product--bell-bel-39280-255-s--12405249
**Data updated:** 2026-04-30 18:33 (EEST)
**Category:** Protective Helmets
**Manufacturer:** BELL
**Manufacturer code:** BEL-39280-255-S
**EAN:** 199270049106
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 148.99 €
**Prices and availability valid until:** 2026-08-22 23:59
**Price without VAT (21%):** 123.13 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--bell-bel-39280-255-s--12405249

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 07.08.2026 | free |
| Pickup points | 12.08.2026 | 1.79 EUR |
| Courier delivery to door | 12.08.2026 | 4.99 EUR |

## Summary description

BELL 4FORTY AIR MIPS is a mountain bike helmet in size S (52–56 cm) finished in solid matte black. It features MIPS technology for rotational impact protection and an airflow-focused 4FORTY AIR design for ventilation. Intended for trail and cross-country riding, it provides head protection, impact management and comfort for everyday MTB use.

## Long description

BELL 4FORTY AIR MIPS is a size S (52–56 cm) mountain bike helmet in solid matte black designed for trail and cross-country riding. The helmet combines an airflow-focused shell design with integrated MIPS technology to reduce rotational forces during certain impacts. Lightweight construction and adjustable fit elements aim to balance comfort and protection for everyday MTB use.
Advantages
The 4FORTY AIR MIPS provides ventilation through a network of intake and exhaust vents that promote airflow across the head. MIPS technology is built into the liner to help manage rotational energy in oblique impacts. The helmet’s adjustable retention system and padded interior allow a customizable, secure fit within the S size range. The matte black finish offers a low-reflective, understated appearance suitable for a variety of riding conditions.
Suitable for
Trail riding and enduro-style rides where ventilation and impact management are important
Cross-country (XC) riding that requires a balance of light weight and protection
Everyday mountain biking and off-road training sessions
Riders seeking a compact, low-profile helmet with rotational impact mitigation
When it may not be suitable
This helmet is sized for head circumferences between 52 and 56 cm; riders outside this range should select an appropriate size. For disciplines that demand extended full-face coverage (for example downhill racing with high-speed crashes), a full-face helmet would provide more facial and jaw protection than this open-face MTB helmet.
Key specifications
Size range: S — 52–56 cm head circumference
Construction: lightweight in-mold shell with internal EPS liner
Rotational protection: integrated MIPS system
Ventilation: multi-vent airflow design optimized for trail use
Fit system: adjustable retention mechanism and padded comfort liner
Finish: solid matte black
How to use
Measure head circumference at the widest part above the eyebrows to confirm the S size (52–56 cm). Place the helmet level on the head, adjust the retention dial or system so the helmet sits snugly without uncomfortable pressure, and fasten the chin strap with the buckle adjusted for a secure fit. Ensure the helmet sits low on the forehead and does not rock when you shake your head. Replace the helmet after any significant impact or if the fit components become damaged.
What to consider before purchase
Confirm head measurement falls within the 52–56 cm size range
Decide if an open-face trail helmet with MIPS meets your protection needs versus a full-face model
Check compatibility with goggles or eyewear you plan to use
Consider ventilation needs based on typical riding climate and intensity
Usage recommendations
Use the BELL 4FORTY AIR MIPS for trail and cross-country sessions where ventilation and rotational impact mitigation are priorities. Regularly inspect the helmet for visible damage and follow manufacturer guidelines for replacement after any significant impact to maintain effective protection.

## FAQ

### How much does the BELL 4FORTY AIR MIPS mountain bike helmet S cost, and is it available for purchase?

The price is 148.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 21 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 07.08.2026 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: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can BELL 4FORTY AIR MIPS mountain bike helmet S be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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 BELL 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 BELL 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