Hobie created the Turbo Fin Upgrade Kit with performance in mind. Turbo fins incorporate a larger fin template, providing faster top-end speed, increased responsiveness and the ability to cover more water with less pedaling. Additionally, most individuals prefer the longer fin for increased lateral resistance when using a Mirage Sail kit.This is the new Hobie Mirage Turbo Fin Kit- Kick Up. Upgrade your standard kickup drive with the Turbo Fin Kit Kick up kit. Does not fit 2019 MD 180 Drives. Only fits 2020+ drives.*Hobie requires a minimum shipping expense for all Hobie endorsed parts. Please contact us directly for volume shipping discounts.