Innovative chain produced with 100 years of Izumi Chain craftsmanship.
IZUMI SUPER TOUGHNESS KAI is a high performance chain co-developed by IZUMI and the U.S. National Team for the Tokyo Olympics. It achieved 10% reduction in resistance and drag compared to the traditional IZUMI-V SUPER TOUGHNESS when combined with a high-performance lubrican. This IZUMI SUPER TOUGHNESS KAI, the highest model of Izumi Chain, has been chosen by many riders including Olympic athlete and professional Keirin racers.
IZUMI SUPER TOUGHNESS KAI has a bolt-nut connector. We recommend the RUNWELL chain tools for easy and quick maintenance:
FIXER , a flathead screwdriver and 6mm spanner combined tool
CHECKER for easy looseness check.