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Thread: Japanese shafts

  1. #1

    Default Japanese shafts

    Was looking at a set of clubs on eBay. Shaft read
    DATA080 wt 80 tq2.2 and KP M PRGR M-40

    Anyone know what flex this is?

  2. #2
    Member Touring Pro (Aust PGA)
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    M-40 is the flex designation. Japanese clubs designate flex by m/s so M-40 is 40m/s or close enough to 90mph. Now I just wish I could remember if that's based off driver swing speed...

  3. #3
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    I'm pretty sure M-40 is closest to what we call regular.

    http://forum.tourspecgolf.com/topic/...-flex-numbers/

  4. #4

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    Thanks guys. Very helpful.

  5. #5
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    Or PM Supo67 as stew lives in Japan and has bought a warehouse full of stuff in his time!
    Gamers
    Ping G430 Max10K 9* Driver with Accra TZ6 stiff flex shaft
    TM Stealth 2+ 3 wood with Crazy Boron 75g Stiff shaft
    Tour Edge C721 19* Hybrid with KBS Tour 80 stiff shaft
    Srixon ZX 5 (mk2) irons with Proj X LZ 5.5 shafts 4 to PW
    Callaway MD5 Raw wedges 50/10 56/14 60/12
    Lajosi Custum Flow Neck putter *Titty Pro V1X ball.

  6. #6
    Senior Member Touring Pro (Japanese Tour)
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    gday , just found this..

    yes i do indeed have a cpl of sets laying about...........................,

    m40 is driver swing speed in meters per second.
    turns out 39.8 mps is the average amateur golfer speed and 300g is the best weight for average golfers driver at 45inch accoridng to prgr research
    so m40 is regular
    M40 can play soft stiff and , m 37 is a soft reg .
    PRGR go to m-46 which is pretty getting to stout IN REAL PLAY , m-43 as i see it is perfect for driver swing speeds about 94-102 mph ...ish... stronger than 102 ur best with the m46 . they do take a decent step up in stiffnes in a game.
    they are made by NS so the quality is top class.
    im not 100% sure but i think they are prob based on the 1050 model or 999 is my best guess bec they dont balloon to me , the M marked shafts def fly a little lower than an NS 950s from what i see , i play these a lot and ive no need to reshaft the heads if these are in them.
    i play m43 and cant fault them in any way possible.
    m46 i find a little bit boardy, i like the ability to work the m43s in the air ever so slightly the m46s are a bit tough to do
    As a driver shaft equiv id rate the m-43 same as i wud l a diamana blue 65s and say the m-37 like a diamana red 65reg

    hope that helps a tad.
    Last edited by supo67; 10th June 2022 at 03:46 PM.
    srixon zr-30 9.5* - diamana X 70s
    kasco fd 12.8 *- diamana stinger 70s
    royal collection 304p 15* - diamana X 70s
    royal collection sfd 3 19* - crazy black ut xs
    yamaha 2009 forged 5/pw - NS prototype 2g18s
    yonex shinagawa 50/56*- ns super peening orange
    fourteen mt-28 60* - ns 950s
    odyssey 2 -ball exo


    badly missing, links.






 

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