Red Button Release Spare Part Kappa Z645RK for K35 K46 K49 Monolock Top Case

The Kappa Z645RK is the original Kappa replacement red release button for the opening mechanism of Monolock K35, K46, and K49 top cases. It is the small plastic component that, when pressed, releases the top case lid, allowing it to open. Over time, exposure to sun, rain, and temperature fluctuations can make it brittle: if the button is broken, crumbled, stuck, or no longer returns to its position, this is the correct replacement to restore functionality to your top case without having to replace it entirely.

✓ Strengths

• Original Kappa Moto spare part – perfect interchangeability with the factory-fitted button
• Compatible with Monolock K35, K46, and K49 top cases – same release group
• High-visibility red color – identical to the original, does not alter the aesthetic of the top case
• Restores opening function – avoids having to change the entire lock or top case
• Durable technical plastic – designed to withstand UV rays, rain, and vibrations
• Installation without special tools – easily replaceable by end-users
• Kappa Code: Z645RK – official catalog replacement part

Technical features

Compatible top cases

Recommended replacement parts

• Kappa Z115RK – pair of nylon lid-retention straps for top cases and side cases
• Kappa Z156K – lock cylinder, if the key no longer turns
• Kappa K500N – key and lock kit for top cases and side cases
• Kappa Z126AK – set of 4 replacement rubber stoppers for the top case plate

Who it's perfect for

The Kappa Z645RK is the essential replacement part for anyone who owns a Kappa Monolock K35, K46, or K49 top case and finds themselves with a broken, crumbled, or stuck release button. Instead of replacing the entire top case or taking it to a workshop, with just a few euros and a few minutes, you can restore full lid opening functionality, making your top case as good as new.

Frequently Asked Questions (FAQ)

Which top cases is the Z645RK suitable for?
It is the original release button for Kappa Monolock K35, K46, and K49 top cases. Other Kappa models have dedicated buttons (e.g., Z315K for K28, K29, K30, and K42).

Are the top case or lock included?
No. The Z645RK is sold as a single replacement button; the top case, lock, and keys must be purchased separately.

Are tools needed for installation?
No. Replacement is done by pressure from inside the lid: simply remove the old button and insert the new one until it clicks, without special tools.

Is it an original spare part?
Yes, it is an original Kappa Moto spare part (GIVI S.p.A. group), not a generic aftermarket compatible part.