# Helmet BELL 4FORTY AIR INTEGRATED MIPS — mountain bike helmet, size L, black

**URL:** https://aio.lv/en/product--bell-bel-38143-001-l--12405173
**Data updated:** 2026-04-30 18:33 (EEST)
**Category:** Protective Helmets
**Manufacturer:** BELL
**Manufacturer code:** BEL-38143-001-L
**EAN:** 199270047980
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 149.99 €
**Prices and availability valid until:** 2026-07-31 23:59
**Price without VAT (21%):** 123.96 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--bell-bel-38143-001-l--12405173

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 21.07.2026 | free |
| Pickup points | 24.07.2026 | 1.89 EUR |
| Courier delivery to door | 24.07.2026 | 4.99 EUR |

## Summary description

BELL 4FORTY AIR INTEGRATED MIPS is a mountain bike helmet with integrated MIPS protection designed for trail and enduro use. Size L provides a larger fit; the model emphasizes ventilation and impact management through the AIR integrated shell and MIPS liner. Suitable for riders seeking enhanced rotational-impact protection on off-road rides and fast descents.

## Long description

BELL 4FORTY AIR INTEGRATED MIPS is a mountain bike helmet designed for trail and enduro riding. This size L helmet combines an integrated outer shell with a MIPS liner to help manage linear and rotational forces during impacts. The helmet’s design focuses on airflow and protection for riders who need coverage on fast, technical descents and varied off-road terrain.
Advantages
The helmet integrates a ventilated shell architecture and a low-profile design that balances coverage and mobility. The MIPS liner is included to reduce rotational forces transmitted to the head in angled impacts, while the AIR integrated shell aims to improve impact energy management. Size L offers a larger fit for riders requiring increased internal volume and coverage. The adjustable retention system and padding provide a customizable fit and basic sweat management without adding unnecessary weight.
Suitable for
Trail and enduro mountain biking where ventilation and extended coverage are needed
Fast descents and technical singletrack that pose higher impact and rotational risk
Riders seeking a size L helmet for a larger head circumference and improved fit
When it may not be suitable
This helmet is optimized for trail and enduro use and may be larger or heavier than minimalist cross-country race helmets. Riders who prioritize the absolute lightest race-focused helmets or who need a full-face DH helmet with chin protection may find this model less appropriate.
Key specifications
Intended use: trail / enduro mountain biking
Protection technology: MIPS rotational energy management liner
Shell: integrated ventilated outer shell with impact-absorbing liner
Fit size: L (larger internal volume)
Ventilation: multiple intake and exhaust channels for airflow
Retention: adjustable rear retention system
Padding: removable or adjustable internal padding for comfort and sweat control
How to use
Place the helmet level on the head so the front rim sits just above the eyebrows. Adjust the rear retention system until the helmet feels snug but not overly tight. Position and tighten the side straps to form a Y-shape below each ear and fasten the buckle securely. Replace or adjust internal padding as needed for comfort and to maintain correct fit. Inspect the helmet regularly for cracks or damage and replace it after any significant impact or according to manufacturer guidelines.
What to consider before purchase
Measure head circumference to confirm size L provides the required fit
Consider whether integrated MIPS rotational protection meets your safety preferences
Evaluate ventilation needs relative to your typical riding conditions and climate
Decide if extended coverage of this helmet matches your riding style versus a full-face or minimalist race helmet
Usage recommendations
Use the helmet for trail and enduro riding where added rotational protection and ventilation are desired. Ensure correct fit each time you ride, replace padding if worn, and replace the helmet after any crash that may have compromised its protective properties.

## FAQ

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

The price is 149.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 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 21.07.2026 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 INTEGRATED MIPS helmet L 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

## Image

https://aio.lv/img/cache/product/12405173/68692070_large.webp