Hogans Daddy Posted June 24, 2023 Report Share Posted June 24, 2023 I recently picked up a set of PRGR RS-Red irons and i really love them. I decided to see if I could fill out the set with PRGR clubs and I seem to run into some confusion about the shaft flexes. My irons are M-40, supposedly senior flex and I'm happy with their performance. My RS-Red driver is the same... BUT, looking online for wedges and fairway woods, it looks like some people advertise M-40 as stiff or something in between stiff and regular. I understand it's supposed to be based on swing speed and M-40 seems right for me, but is there something I'm missing? Can M-40 represent some spread of flex? Thanks... Dennis Quote Link to comment Share on other sites More sharing options...
Ian-500 Posted June 24, 2023 Report Share Posted June 24, 2023 I think it's M37 ladies/senior, M40 regular, M43 stiff and M46 x stiff. Quote Link to comment Share on other sites More sharing options...
supo Posted June 26, 2023 Report Share Posted June 26, 2023 ian is spot on . Quote Link to comment Share on other sites More sharing options...
cuistot Posted June 29, 2023 Report Share Posted June 29, 2023 What is “R2 flex?? Is it an “A” flex I. Us? Quote Link to comment Share on other sites More sharing options...
Hogans Daddy Posted December 9 Author Report Share Posted December 9 (edited) Apologies for bringing up an old thread, but it's relevent to something that just happened. I eventually sold the PRGR set mentioned above and was pretty sorry I had soon after. Now, today, I took delivery of a newer set of PRGR irons that were supposed to be M37 flex, more suited to my 75 year old swing. When they arrived, I realized the 5 iron is M37, but the rest of the set is M40. Trying to find anything resembling a senior flex in a Japanese golf club seems really difficult. Does anyone know why? And I've already written the seller in Japan about returning these irons. Color me frustrated... Edited December 9 by Hogans Daddy Quote Link to comment Share on other sites More sharing options...
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