Merged from two Kawasaki, a Z1000 J1 from 81 and a 88 ZX750 A1, Natrium was completely rebuilt from scratch since their donors were ready for scrap. The chassis of the GPZ was extensively grinded, cut and cleaned, receiving the swingarm o from the Z1000.
Powered by the grunty powerplant that boosted Eddie Lawson two AMA Superbike titles in 81 and 82, the unit was removed from the Z1000 and it was fully reassembled with the displacement increased to 1132cc thanks to a Wiseco® big bore cylinder kit, carbs dynojeted, new electronics and retuned exhaust.
Reworked and redesign original suspension and brakes all around. Fiberglass lightweight custom body and a touch of rustiness complete the look. During the process the bike lost weight nearly 40kg (compared to Z1000) and gained about 20 ponies.