Kappa KMX400B K'METROBOX Monolock Top Case 40 Liters Matte Black Aluminum with Plate
$142.00
$205.00
-30%
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Kappa KMX400B K'METROBOX Monolock Top Case 40 Liters Matte Black Aluminum with Plate
Moon Bike: 933 reviews on our site and eBay, 99.8% positive
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$142.00
$205.00
-30%
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Code: KMX400B
Official Piaggio Group dealer
Shipping outside the European Union — duties payable by the recipient
This order ships outside the European Union and is subject to customs clearance in the destination country.
Export formalities and costs from Italy are on us and are already included in the price.
Import duties, taxes and clearance fees in the destination country are payable by the buyer. They are not included in the product price or the shipping cost, and we cannot calculate them: they are set by the customs authority of the destination country.
The carrier will not release the parcel until the recipient pays these charges. If the shipment is refused or the charges are left unpaid, the parcel is returned to us and shipping, return and any customs costs are deducted from the refund.
This order ships outside the European Union and is subject to customs clearance in the destination country.
Export formalities and costs from Italy are on us and are already included in the price.
Import duties, taxes and clearance fees in the destination country are payable by the buyer. They are not included in the product price or the shipping cost, and we cannot calculate them: they are set by the customs authority of the destination country.
The carrier will not release the parcel until the recipient pays these charges. If the shipment is refused or the charges are left unpaid, the parcel is returned to us and shipping, return and any customs costs are deducted from the refund.
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The Kappa KMX400B K'METROBOX is a 40-litre MONOLOCK® rear top case made of matte black painted aluminium, 1.2 mm thick. It features the CRABLOCK direct-pressure lock, an internal quick-release mechanism and a recycled R-PET interior lining. The MONOLOCK® plate and universal kit are included; it holds two open-face helmets and has a maximum load capacity of 3 kg.
✓ Key Features
- Original Kappa top case, code KMX400B, K'METROBOX range
- 1.2 mm matte black painted aluminium, with technopolymer trim, corners and tie-down points
- 40-litre capacity, holds two open-face helmets
- CRABLOCK lock: turning the key lifts the lid for quick opening
- Internal quick-release: the top case can only be removed from the plate when the lid is open
- Recycled R-PET interior lining, plate and universal kit included
- Made in Italy by Kappa Moto, a Givi S.p.A. Group brand
Technical Specifications
| Brand | Kappa Moto (Givi S.p.A. Group) |
| Code | KMX400B |
| EAN | 8019606401311 |
| Type | MONOLOCK® rear top case, K'METROBOX range |
| Capacity | 40 litres, two open-face helmets |
| Dimensions | 43 × 30 × 36 cm |
| Maximum load | 3 kg |
| Material | 1.2 mm matte black painted aluminium; technopolymer trim, corners and 6 tie-down points |
| Lock | CRABLOCK direct-pressure lock, with key |
| Release | Quick release with internal release knob |
| Interior lining | Included, orange, made from recycled R-PET |
| Plate | MONOLOCK® plate included, with universal kit |
| RRP | €179.00 (Kappa 2026 catalogue) |
| Status | In the Kappa 2026 catalogue |
| Country of manufacture | Italy |
| Condition | New |
| Weight | 5.25 kg (Kappa price list) |
| Packaging | Box 55 × 45 × 35 cm |
⚠️ Important notes
• Without a luggage rack, a specific Kappa rear mount is required and sold separately.
• The top case uses the MONOLOCK® system: it cannot be attached to MONOKEY® plates.
• The maximum load is 3 kg; two open-face helmets will fit depending on the brand and size of the helmets.
• Without a luggage rack, a specific Kappa rear mount is required and sold separately.
• The top case uses the MONOLOCK® system: it cannot be attached to MONOKEY® plates.
• The maximum load is 3 kg; two open-face helmets will fit depending on the brand and size of the helmets.
Compatibility
The KMX400B is not specific to any particular model: it can be fitted to motorcycles and scooters with a flat luggage rack using the included MONOLOCK® plate, or to a specific Kappa rear mount for MONOLOCK® top cases.
Description, dimensions, capacity and maximum load are as stated in the official Kappa 2026 catalogue and manufacturer's data sheet.
Who is it perfect for?
For anyone who wants a 40-litre aluminium top case for their everyday scooter or motorcycle, with room for two open-face helmets, quick opening and the plate already included.
🛡️ Guarantee and quality – Moon Bike S.r.l.
Original Kappa top case, new, made in Italy. Moon Bike S.r.l. is based in Cercola (NA) and ships from Italy with an invoice and a 2-year warranty.
Original Kappa top case, new, made in Italy. Moon Bike S.r.l. is based in Cercola (NA) and ships from Italy with an invoice and a 2-year warranty.
Frequently asked questions
What is the Kappa KMX400B top case?
It is Kappa's 40-litre K'METROBOX rear top case, made of 1.2 mm matte black painted aluminium, with the MONOLOCK® mounting system. It measures 43 × 30 × 36 cm, holds two open-face helmets and includes a recycled R-PET interior lining.
Is the plate included?
Yes. The Kappa 2026 catalogue describes the KMX400B as including the plate and universal kit, with the interior lining also included. You do not need to purchase anything else to fit it to a flat luggage rack: the MONOLOCK® plate with mounting hardware is included in the package.
Which motorcycle or scooter can it be fitted to?
It can be fitted to vehicles with a flat luggage rack, to which the MONOLOCK® plate included with the universal kit can be attached. If the vehicle does not have a luggage rack, a specific Kappa rear mount for MONOLOCK® top cases is required and should be selected based on the vehicle model.
How does the CRABLOCK lock work?
It is the K'METROBOX direct-pressure opening and locking system: turning the key slightly lifts the lid and immediately opens the top case. It is released from the plate using an internal knob, so the top case can only be removed when the lid is open.
How does it differ from the KMX400A?
They are the same 40-litre K'METROBOX top case, with the same dimensions, the same maximum load capacity of 3 kg and the plate included. The only difference is the finish: the KMX400B is made of matte black painted aluminium, while the KMX400A is made of bare aluminium. The Kappa 2026 price list is the same.
How is it shipped?
The top case is shipped new in a 55 × 45 × 35 cm box. Moon Bike S.r.l. is based in Cercola, in the province of Naples, and ships from Italy with an invoice and a 2-year warranty, so you will also receive a purchase document, which is useful if you are buying it for your business.
Frequently asked questions
Shipping times +
Shipping within 24-48 working hours in Italy. Tracking via SMS/email. Free pickup at our store in Cercola (NA), ready within 1 hour.
Returns and refunds +
You have 14 days from delivery to return the item without giving a reason. Free returns for faulty items. Full details
Payment methods +
Credit cards (Visa, Mastercard, American Express), PayPal, Apple Pay, Google Pay, Shop Pay, Klarna (pay in 3) and cash on delivery.
Warranty and authenticity +
All products come with a 24-month legal warranty. We are an Official Piaggio Group Dealer: original spare parts are certified with a verifiable OEM code.
Technical support +
Our technical team is available on WhatsApp +39 392 456 1248 Mon-Fri 9:00–13:30 / 14:30–18:00 (Italian time), or by email.