Kwaiback MK7 Titanium Liners

The Backbone of Your Build.

The Kwaiback MK7 was designed from the ground up to be more than just a knife—it is a platform. These Titanium Liners are the chassis that platform is built on. Whether you are replacing a damaged set, dropping weight from a steel-liner setup, or building a completely custom MK7 from our ecosystem parts, it all starts here.

Why Titanium? We use Grade 5 (6Al-4V) Titanium for one reason: it offers the highest strength-to-weight ratio of any metallic element we can machine.

• Weight Reduction: Approximately 45% lighter than stainless steel counterparts, these liners make the MK7 vanish in your pocket without sacrificing structural integrity.
• Corrosion Proof: Unlike steel, these will never rust, pit, or corrode, making them ideal for maritime or humid environments.
• The Customizer’s Canvas: Delivered in a raw or stonewashed finish, these liners are ready for you to heat color or electrochemical anodize to match your unique style.

Precision Engineered for the Selby Lock These aren't generic stamped parts. Each liner is 3D machined to extremely tight tolerances to house the Selby Lock (Cross-bar) mechanism. The internal geometry is optimized for smooth action and zero lock-stick, ensuring that your DIY build functions with the same reliability as a factory-assembled Hoback.

Features

• Material: Aerospace-Grade 6Al-4V Titanium.
• Ecosystem Ready: Fully compatible with all Kwaiback MK7 Frame Covers, Backspacers, and Pivots.
• Weight Relieved: Internally milled pockets reduce weight while maintaining lateral rigidity.
• Finish: Available in Stonewash (standard) or Raw (for customizers).

Specifications

• Compatibility: Kwaiback MK7 ONLY (Not compatible with MK5, MK6, or Kwaiback Auto).
• Weight: .65 oz (Pair).
• Thickness: .0625" precision ground stock.
• Origin: 100% Machined in the USA 🇺🇸.

The Ecosystem: Complete Your Build

Don't forget the rest of the puzzle. These liners are just a small piece of the puzzle. make sure you check out the rest of the parts ecosystem. 

Installation & Warranty Note

Note: Disassembly and assembly of high-performance folders requires patience and the correct tools (Wiha or similar high-quality hex bits recommended). While we encourage you to make this knife your own, damage caused by improper installation is not covered under warranty. If you are unsure, please consult our MK7 Assembly Guide or contact support.