The new JPX921 Forged is certainly the one iron from the JPX921 series that has changed the most. Mizuno has really turned a few screws to make this iron not only more forgiving but also smaller. This makes the JPX921 Forged more interesting for good players - especially when it comes to long irons. Good amateurs and pros can consider a mixed set of JPX921 Tour for the short irons and JPX921 Forged for the long irons.
What makes this iron so unique is its construction. The JPX921 Forged, as the name suggests, is basically forged. Afterwards it is milled from the sole behind the clubface. This process has already been successfully implemented in the JPX919. With JPX921, however, the clubface became significantly thinner. The result is a higher COR (trampoline effect), a higher forgiveness which is spread over a larger part of the face. And this despite the fact that the new JPX921 Forged has a smaller and narrower clubhead. The latter will also be one reason why this iron will now really be in the focus of better players.
The lofts became 1° stronger but the new JPX921 Forged is also launching a bit higher.
We will receive our test clubs shortly to publish a detailed test report.
Iron Set from 5-PW.
Construction Comparison of JPX919 and 921
Mizuno JPX921 Forged Specs and Lofts
||Loft in °
||Lie in °
||Offset in Inch
||Length in Inch
Mizuno not only manufactures golf clubs but also manages to provide excellent products in exactly this segment. One of the main reasons for this is that Mizuno always aims to offer the best possible quality. And they already have several decades of experience with golf clubs. They were one of the first to optimize the production process of forged irons. Over the years Mizuno has developed the so-called Grain Flow Technology. This process makes the steel that is forged much purer. This way Mizuno does not have to forge at such high pressure as Miura. Mizuno has thus established an industrial process that meets high quality standards and still allows the production of large quantities.
The iron heads are all manufactured in Hiroshima, Japan and then shipped to Scotland. There, each set of irons is individually assembled - exactly according to the customer's requirements. This is why Mizuno is a perfect fit for ExactGolf - because we have also made it our business to be able to serve all individual configurations. Mizuno has all club heads, shafts and grips in stock. There is no extra charge for special shafts or grips. However, there is a kind of "standard configuration" for each set of irons which is already built in advance and in larger quantities. These are correspondingly cheaper and available for immediate delivery.
If the irons are ordered individually, they are assembled exactly according to the customer's wishes. This means in exactly the required shaft and in the desired length. With selected grip, lie and loft. Here there are basically no restrictions except for particularly long or short shafts. A club that is to be longer or shorter than 1/2 inch requires a special manufacturing process in that the swing weight must be adjusted. Mizuno does this but can only handle lengths of - or + 1/2 inch. A club with e.g. +1 inch would need to be drilled out to fit the swing weight. We do this for example with our Miura irons. Unfortunately this is not possible with Mizuno. Apart from that Mizuno really satisfies all wishes and that very efficiently and quickly. Within 14 days the set of irons is built and ready for shipping.