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The Shimano RC901 Boa IP1 Kit Black Left is a genuine replacement dial and hardware set designed specifically for Shimano’s premium S-Phyre RC9 road shoes. If your left Boa closure has been damaged, worn, or is no longer tightening smoothly, this kit allows you to restore the precise fit and secure hold that performance road riders rely on. Using original Shimano and Boa components helps ensure consistent function, smooth micro-adjustment, and long-term durability compared with generic spares.
This left-side kit is ideal for riders who demand a race-ready fit and want their shoes to feel as responsive as the day they were new. The Boa IP1 system is known for its easy on-the-fly adjustment, allowing you to fine-tune tension with small clicks, even while riding. Replacing a worn dial can improve comfort, reduce pressure points, and keep your foot firmly supported during hard sprints, climbs, and long training rides. It’s a simple, cost-effective way to extend the life of your high-end Shimano road shoes and maintain top-level performance.
