4597 Calle Del Media

Ft. Mohave, AZ 86426

+1 (928) 763-7600


Introduction to Group K

Group K has been building Race and Recreational Watercraft since 1986. Our Professional Aftermarket High Performance Shop specializes in Engine Modification Kits for YamahaSea Doo • Kawasaki • Polaris • Tigershark Personal Watercraft.

Resto-Mod Formula
Kawasaki 650SX

Racing Modifications
Kawasaki SXI Pro 750

Resto-Mod Build-Up
Sea Doo HX “Shredder”

Resto-Mod Formula
Sea Doo GSX 785

Resto-Mod Build-Up
Yamaha Super Jet

Kawasaki SXR 800/SXI 750

849cc Big Bore Sleeper Kits

Yamaha GPR/XLL/XLT 1390

Big Bore "The Most Powerful 87 Octane PWC Anywhere!" • "The RXP Killer"

Yamaha Super Jet 845cc

Big Bore "Hammer" Sleeper Kits