K Factory - Hop-Up Parts

K factory K14220 G4RS Steel Front Universal Joint Set (2)

K factory K14219 G4RS Steel Rear Universal Joint Set (2)

K factory K1102-1 Receiver Housing Set (V1R/RR/S)

Great Vigor SECB2271 Steel Diff bevel gear (V2000)

K factory K1494 Side belt new competition low friction G4,V1