Premium Curved Spring Bars for JLC Master Ultra Thin 39mm

Ensure a closer and more refined strap fit with these premium curved spring bars, designed for watch cases compatible with the Jaeger-LeCoultre Master Ultra Thin 39mm. The curved profile allows the strap to sit closer to the case, reducing visible gaps and improving overall integration.

Manufactured from high-grade stainless steel, these spring bars feature precise curvature, tight tolerances, and controlled spring tension, delivering a fit and feel that is extremely close to original specification. They are especially suited for leather straps on slim dress watches, enhancing both aesthetics and comfort.

Each spring bar is precision-crafted for its intended application to ensure accurate fitment and dependable retention, making them ideal for replacing worn or standard straight bars during strap upgrades or servicing.

Each purchase comes with x2 spring bars.

(Not an OEM part and not affiliated with Jaeger-LeCoultre — compatible replacement only.)

Product Specifications

• Product Type: Spring bars
• Material: Premium-grade stainless steel
• Compatibility: Jaeger-LeCoultre Master Ultra Thin 39mm 1368420 , 1378420 and other model with 21mm lug width.
• Case Size: 39mm
• Size: 21mm × 1.8mm