Optimize your Di2 eTap electronic shifting system with the FSA Di2 Seatpost Battery Plug, a high-quality, durable component engineered for seamless connectivity and reliable performance. Crafted specifically for 27.2mm seatpost diameters, this premium battery plug is designed to fit FSA's renowned K-Force, SL-K Light, and SL-K ITC seatposts, ensuring a perfect, secure connection for your Di2 battery setup. Constructed from premium materials, the FSA Di2 Seatpost Battery Plug offers outstanding durability and resistance to the elements, making it ideal for both road and mountain biking adventures. Its innovative engineering features a precise fit and easy installation, allowing riders to maintain optimal frame integrity and clean aesthetics while ensuring uninterrupted electronic shifting performance. This component incorporates advanced design and technology to maximize electrical contact stability, preventing connectivity issues during rides. Whether enhancing the performance of your high-end race bike or ensuring reliable shifting on your gravel or commuter bike, the FSA Di2 Seatpost Battery Plug is an essential upgrade for cyclists seeking precision, durability, and ease of maintenance. Upgrade your bike's electronic shifting system with confidence-choose the FSA Di2 Seatpost Battery Plug for a seamless, rock-solid connection that elevates your cycling experience. Perfect for discerning riders looking to optimize their Di2 system's reliability and performance across various terrains and riding conditions.