B18 was the first Block 3 SuperHeavy booster. It was planned to be used for Flight 12, but on Nov 20 , 2025, it suffered an anomaly during its cryogenic testing at Massey's and exploded. It was scrapped days later.

Changes on Block 3 booster:

-New Hot Stage Ring (integrated vented interstage/forward dome)

-Presence of 3 grid fins

-Raptor 3 engines

1:100 scale model

Photos provided by Shockwave (where specified)

For 3D printer users, here is the 3D HSR file:

3D printable HSR