Upgrade your bike's front suspension with the RockShox Lyrik D1+ DebonAir+ Buttercup Air Spring Upgrade Kit - a cutting-edge enhancement designed for 160 mm travel Lyrik D1+ forks (2023+ models). Crafted from high-quality materials, this upgrade kit features the innovative DebonAir+ technology, delivering an ultra-smooth, butter-like small bump sensitivity combined with increased air volume for improved support and stability across rough terrain. Designed for performance-driven riders seeking confidence and control, the kit includes a precision-engineered air shaft assembly, ButterCup seal head, and all necessary components for seamless installation. The DebonAir+ upgrade optimizes fork responsiveness, offering a more plush feel on small bumps while maintaining superior support on steep descents, making it ideal for trail, enduro, and aggressive mountain biking. Versatile and easy to install, this spring upgrade kit is compatible with multiple 2023+ Lyrik D1+ models, including FS-LYRK-SEL-D1, FS-LYRK-UFA-D2, FS-LYRK-ULT-D1, and FS-LYRK-ULT-D2. Enhance your fork's performance with this innovative spring upgrade, enabling you to customize your ride height and travel to suit your riding style and terrain demands. Key Features: - Includes air shaft assembly, ButterCup seal head, and seal components for comprehensive upgrade - Enhances small bump sensitivity with butter-like feel - Increases air volume for better support and ride height adjustment - Compatible with 2023+ Lyrik D1+ forks, including multiple model variants - Suitable for trail, enduro, and all-mountain riding - Easy DIY installation for quick performance gains Optimize your fork's performance with the RockShox Lyrik D1+ DebonAir+ Buttercup Air Spring Upgrade Kit - the perfect solution for riders demanding precision, control, and confidence on every ride.