Dumonde Tech Pro X Lite Chain Lube Dumonde Tech worked diligently on our next generation of bicycle chain lubricant for several years. Our Micro Resistant Complex Compounds (MRCC) had been in development for over 10 years. Originally developed for our motorsports lubrication?ÇÖs, MRCC technology creates a lighter viscosity while maintaining high protection, reducing friction and increase in creating much higher film strength then common, traditional technology. PRO X LITE Bicycle Chain Lubricant Cyclist who tested or raced using PRO X Lite, report that performance is better then any other lube they have ever used. Even those riders that use our Standard Lite and Original chain lubes. A bold statement even for us to claim, but comes from years of technology, formulation and testing. PRO X Lite brings the aspect of polymerization and MRCC oils that by design migrate for complete wetting of the surfaces.