# Adjustment Dial for GIRO Aries Spherical Roc Loc 5 Air + Fit System — replacement knob, black, size L

**URL:** https://aio.lv/en/product--giro-gr-7153929--11832482
**Data updated:** 2026-03-09 14:43 (EET)
**Category:** Protective Helmets
**Manufacturer:** GIRO
**Manufacturer code:** GR-7153929
**EAN:** 196178160797
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 23.49 €
**Prices and availability valid until:** 2026-07-20 23:59
**Price without VAT (21%):** 19.41 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--giro-gr-7153929--11832482

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.89 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

Replacement adjustment dial (knob) compatible with GIRO Aries Spherical helmets using the Roc Loc 5 Air + Fit System. Supplied in black, size L. Designed to restore or replace the helmet’s fit-adjustment mechanism, enabling secure micro-adjustments of retention and comfort. Suitable for repairs or upgrades of compatible GIRO helmet models.

## Long description

Replacement adjustment dial compatible with GIRO Aries Spherical helmets that use the Roc Loc 5 Air + Fit System. This black size L knob restores the helmet’s fit-adjustment mechanism and allows precise micro-adjustments of retention and comfort. The part is intended for users who need to repair, replace, or upgrade the existing dial on compatible GIRO helmets without altering the shell or padding.
Advantages
The replacement dial provides accurate, incremental fit adjustments to maintain a secure hold during riding and to improve overall comfort. Manufactured to match the form and function of the original Roc Loc 5 Air + Fit System, it is designed for straightforward installation and durable everyday use. Its black finish offers a neutral appearance that preserves the helmet’s original look.
Suitable for
Restoring fit-adjustment functionality on GIRO Aries Spherical helmets
Repairing helmets after dial damage or loss
Upgrading or replacing worn adjustment knobs
Maintaining consistent retention during cycling or commuting
Key specifications
Compatibility: designed for helmets equipped with the Roc Loc 5 Air + Fit System
Color: black
Size: L (large) adjustment knob
Function: micro-adjustable retention mechanism control
Material: durable polymer construction suitable for helmet use
How to use
Remove the damaged or missing adjustment dial following the helmet manufacturer’s instructions, ensuring the helmet is clean and placed on a stable surface. Align the replacement knob with the Roc Loc 5 Air + Fit System’s mounting interface and press or twist it into place until it engages securely. Test the dial by rotating to confirm smooth micro-adjustments of the retention system and fine-tune fit before use.
Usage recommendations
Inspect the adjustment dial periodically for wear or looseness. Replace the part if adjustment becomes imprecise or if the mechanism shows visible damage. Use only compatible replacement parts to maintain the helmet’s intended fit and safety performance.

## FAQ

### How much does the GIRO Aries Spherical Roc Loc 5 Air + Fit dial — black L cost, and is it available for purchase?

The price is 23.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 9 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 14.07.2026 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. 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 GIRO 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 GIRO 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/11832482/67233045_large.webp