What Our Gearhead(R) Experts Are Saying: "I've installed this adapter in a few Ridley aero builds, and it fits perfectly-no play, no rattle, just a snug seatpost integration. It's one of those small but crucial parts that make a Di2 setup feel truly dialed." When we're chasing clean builds and aerodynamic perfection, every detail matters. The Forza Di2 Battery Adapter for Noah Fast and Noah frames delivers the precise fit we need for Shimano's internal Di2 battery systems. Designed specifically for the Forza aero seatpost, this small but vital component ensures your Di2 battery sits firmly and quietly within the post-no rattles, no shifting, just seamless integration. Crafted from durable thermoplastic material, it cushions the battery securely in place, matching the unique profile of Ridley's aerodynamic seatpost. Whether we're building from the frame up or refining an existing setup, this adapter keeps the entire system race-ready and perfectly streamlined.