Medeco X4 Small Format Interchangeable Core, KeyMark, 8E Keyway

Medeco® X4 Small Format Interchangeable Core (SFIC) – 8E Keyway | KeyMark® X4 System

The Medeco X4 Small Format Interchangeable Core (SFIC) offers utility-patented key control in an easily manageable, high-security package—ideal for organizations with frequent personnel changes or evolving security needs. Designed for fast and efficient core replacement using a control key, the Medeco KeyMark X4 system enables non-technical personnel to "re-key" locks instantly, eliminating the cost and delay of locksmith services.

Engineered for maximum versatility and control, Medeco KeyMark® X4 cores are fully compatible with existing SFIC hardware from other manufacturers and are the ideal upgrade where key duplication security is critical but a UL437 listing is not required.

Ideal For

• Fast food chains

• Retail and convenience stores

• Apartment complexes

• Hospitals and schools

• Office buildings and commercial properties

Key Features

• Rapid Core Change: Re-key locks instantly using a control key—no need to disassemble the lock

• Solid Brass Construction: Built for long-term durability

• Spool-Shaped Top and Bottom Pins: Enhanced pick resistance

• Nickel Silver Bottom Pins: Increased wear resistance and lifespan

• Individual Pin Chamber Caps: Simplifies servicing and reconfiguration

• Fully keyed alike, keyed different, or master keyed based on your security structure

Key Control

• Medeco X4 key blank system offers utility patent protection against unauthorized duplication

• KeyMark X4 design ensures that key control remains with authorized personnel or institutions

• Compatible with Medeco’s broader KeyMark® high-security ecosystem

Finish Options

• 05 – Bright Brass

• 06 – Satin Brass

• 09 – Antique Brass

• 10 – Satin Brass Blackened

• 11 – Bright Bronze

• 12 – Satin Bronze

• 13 – Oil Rubbed Bronze

• 18 – Bright Nickel

• 19 – Satin Nickel

• 20 – Antique Nickel

• 22 – Black

• 24 – Dark Bronze

• 25 – Bright Chrome

• 26 – Satin Chrome

Applications

• Retrofit solution for existing SFIC systems from other brands

• Perfect for institutions and businesses that demand quick rekeying with strict key duplication cont