Murakumo Arts extra hard spring for Sanwa JLF/JLX

This high quality replacement spring for the Sanwa JLF is for gamers looking for a spring harder than currently available 6lb springs. 

Developed, manufactured and prototyped in Japan, this spring is designed to be used with very heavy metal battops and balltops such as those available from KDiT: 

KDiT ALU Aluminium bat top – Close Quarters Battle Arcade

KDiT ALU Aluminium ball top – Close Quarters Battle Arcade

In addition, the spring can only be used with steel shafts such as the default Sanwa shaft. Aluminium/lightweight shafts cannot be utilised. Metal actuators such as those from OTTO DIY are recommended. 

This spring is useful for players looking to fine tune their joystick specifications and greatly beneficial to players who utilise a heavy handed style of play and/or prefer a tough joystick movement profile.