81541 - Spine Assy, MD180 K-Up pre 2023*
Spine Assembly for 2020-2022/3* Kick-Up MirageDrive.
*2023 and later see 81543* (only the "drum" (no flying "H" stamped in drum oval ) is different. 2023 on have "Round thread" cable holes. Pre 2023 drums have "slotted" cable/chain holes to prevent "spinning" and have the Hobie flying "H" stamped into drum oval to ID (covered by Hobie Decal). Spine assembly itself is interchangeable. **LATER CHAINS/CABLES WILL NOT FIT "earlier" drum - but can reuse existing drums!)