b'ULTRA MAGNUM INBOARD JET 22 &24ULTRA MAGNUM INBOARD JET 22 & 24GO PLACES YOU NEVER KNEW EXISTED.The ultimate off-road vehicle, the Ultra Magnum has conquered some of the most challenging, demanding and just-plain-wild water on the planet. Driven by a powerful V8, this is the biggest, baddest, boldest inboard jet ever. Its Hydro-Flow jet hull accelerates at a stunning rate, to reach planing speed in an instant. 18'