KZ R1
Flat head piston kit
Build your own kit piston+combustion chamber
Concave head piston kit
Build your own kit piston+combustion chamber
4° head piston kit
Build your own kit piston+combustion chamber
Truncated cone head piston kit
Build your own kit piston+combustion chamber
Standard superior gearbox bearings kit
LOW FRICTION BEARINGS
Build your own low friction gearbox kit: 1pc 6205 SS C4, 2pcs 6203 SS C4, 1pc NJ204-21
If you need a longer bearing life, you can replace the 6205 ss c4 with 6205 HL C4
Ceramic gearbox bearings kit
build your own low friction gearbox kit 1pc 6205, 2pcs 6203, 1pc NJ204-21