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SPRiT  MX  Multi-Stage Springs     


-  Prototyped in Sep 2019,   Announced on 18 Mar 2021 

-  Challenging to 99.5% Supreme Precision - avrg 0.3g variance  

-  Made in Korea of super-precision premium materials under SPRiT control


I have designed these Multi-Stage springs to be curved as in the graphes.

The Multi-Stage springs have been sampled along with Progressive and Complex springs since 2016, fixed some issues in 2019 and released in a broad spectrum in 2021. 


* No Polarity on Multi-Stage springs 

  According to the Newtonians,   Fab  =  - Fba  


  You can say this simply,  "When you press the lighter end, the heavier end will be pressed by exactly the same pressure. vise versa."    or 

   "It damn doesn't matter, which end.  You feel the pressure exactly by the pressure you press."


Please Enjoy Your Premier Builds 




Multi-Stage   M0,  M1,  M2  Series   =  Medium Linear + Slow Heavy Linear  


Bottom out Force    



55 M0    -  Starts at                    Premier Apr 2021

55 M1    -  Starts at 30g             Premier Apr 2021

55 M2    -  Starts +3g heavier    Premier Apr 2021



60 M0    -   Starts at                   Premier Apr 2021

60 M1    -   Starts at 35g            Premier Apr 2021

60 M2    -   Starts +3g heavier   Premier Apr 2021  



63.5 M0    -  Starts at                   Premier Apr 2021

63.5 M1    -  Starts at 37g            Premier Apr 2019 

63.5 M2    -  Starts +4g heavier   Premier Apr 2021 



68  M1    -  Starts at 39g             Premier Apr 2021

68  M2    -  Starts +4g heavier    Premier Apr 2021 



72  M1    -  Starts at 40g              Premier Apr 2021

72  M2    -  Starts +4g heavier     Premier Apr 2021  





For further info  >    


Multi-Stage 99.5%


    Free Return if items have serious production defects.  Free Refund before the item has shipped out. 


    FedEx  or  EMS Express 

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