Genuine Juki Upper Knife (Part #131-50503). This authentic OEM component is specifically engineered for the Juki MO-6714S Series, providing the razor-sharp precision required for high-speed industrial trimming.

Precision Fabric Trimming
The upper knife works in a rapid "scissors" motion against the lower blade to shear fabric excess perfectly before the overlock stitch is formed. The 131-50503 is manufactured to Juki’s exact geometrical and metallurgical standards, ensuring a clean, fray-free edge on a wide range of materials from delicate knits to medium-weight woven fabrics.

Why Choose the Genuine 131-50503 Upper Knife?
Exact MO-6714S Geometry: Designed specifically to fit the upper knife clamp of the MO-6714S, ensuring immediate alignment and the correct cutting angle.

Superior Edge Retention: Crafted from high-grade hardened tool steel that maintains its sharpness significantly longer than generic alternatives.

Reduced Machine Stress: A genuine, sharp blade reduces the "drag" on the machine's motor and drive mechanism, leading to smoother operation and less heat buildup.

Micro-Polished Finish: Features a precision-ground surface that prevents fabric snagging and ensures a fluid cutting motion at 7,000+ RPM.