Specifications for 2026 Production Miura Irons
Loft and lie angles are measured in degrees. Face Progression (FP) is the distance from the club’s leading edge to the center of the hosel, measured in mm. Alternatively, measuring distance of the club’s leading edge to the front edge of the hosel is known as offset. Greater FP is equivalent to less offset. Since hosel wall thickness can vary among different models and brands, FP is more accurate in comparing these club design specifications.
The visual effect of greater offset (less FP) is a tendency to close the club face. While increased offset is often marketed as a game improvement feature, it’s visual effect can lead to a negative performance effect for some golfers that might not be overcome by adjusting the lie angle. Testing clubs with different FP/offset options in club fitting is an effective way to find the optimum design for each golfer.
If you play cavity back irons with moderate or more offset and frequently hit an undesired draw not adequately resolved by lie angle adjustments, testing clubs with less offset (greater FP) is recommended. Miura forged blade-related designs merit serious consideration. Every detail has been refined and testing and to achieve a the distinctive feel that draws golfers to play these wonderful clubs. Miura manufacturing tolerances are the closest in the industry.
SPECIAL FINISHES, LIMITED EDITIONS. Irons and wedges with special finishes like Copper (develops mellow tone as it ages when exposed to air) are often available in limited production runs. Black QPQ finish or unfinished Raw Carbon Steel are usually available for most clubs.
Limited editions of classic models (like ever popular Baby Blades) as well as signature and commemorative are produced periodically. These clubs typically sell out fast. Let me know if you have an interest in these sets.
Specifications for 2026 Production Miura Wedges
The complementary specifications among these wedge families facilitate assembling an effective set to master the ~25 % of a typical golf score determined by wedge play for golfers at all skill levels. Individual models often have years of development time to refine the versatile features in their design. It means that a new design is released only when it’s ready, and not timed to an arbitrary date.
Wedges can be easily combined from different families to assemble your set. The Y-Grind design has a subtle heel and toe roll-off that helps maintain consistent high bounce playability in all conditions. The C-Grind design with more heel and toe sole roll-off facilitates opening the club while minimizing changes to the loft of the leading edge.
Bounce is the angle formed between the leading edge of the club face and the lowest point of the sole in contact with the playing surface when the center of the club hosel is perpendicular to the surface. If the hosel (with the shaft) is tilted forward at impact with the ball, the bounce is effectively decreased. Wedge designs with difference shapes of the sole and/or a rounded leading edge increase shotmaking versatility to match turf conditions.
Club Fitting and Club Building
A FlightScope X3 advanced radar launch monitor is used to measure how golfers swing each club. Test club heads and shafts have adapters for assembling interchangeable club head/shaft combinations for club fitting. Ball trajectory is tracked in a custom-built cage, measured, and analyzed to determine the optimal combination of clubhead and shaft for each golfer. Shafts are premium models with close manufacturing tolerances and having proven on-course performance.
Club heads are ordered directly from Miura golf and shafts ordered directly from the manufacturer or a primary US distributor. Specifications for each club head and shaft are measured. For shafts we measure the overall bend profile with a dedicated instrument. Shaft weight, flex, and MOI are measured to confirm manufacturing tolerances. These measurements matter since not all manufacturers exercise acceptable quality control.
JTClubs builds each club individually. The key specs for each club are measured, including club moment-of-Inertia (MOI), a measure of the force required to swing each club to enhance performance consistency for all clubs in a playing set. We recommend and routinely build MOI-matched club sets.
In contrast, conventional swing weight matching is based on a traditional arbitrary balance point resulting in a significant performance variation through through the set. Swing weight matching is a production convenience that leads to unavoidable variation in club performance through the set. To play your best golf, play MOI-matched sets.
Our professional club-building equipment is essentially the same as found in the shaft company workshops and OEM club assembly facilities that we have toured. Our personal clubs are built with the same brands and models used for fitting and building matched sets for clients. We believe our MOI-matched Miura clubs are the finest sets you can play.
SHAFT SPECIFICATIONS — WHY WE MEASURE THEM BEFORE BUILDING YOUR SET. Weight and flex variations can affect performance and feel of a golf club. These variations are the result of the manufacturing process, the nature of the materials used, and specification tolerances. Each of these factors merit discussion but our concern is the consistency of the final product.
Total weight and weight distribution are arguably the most important properties affecting shaft playability. Production weight is often used by manufacturers to sort shaft stiffness into different groups, e.g. S and X flex shafts for a particular product. Tolerance ranges for total shaft weight and club head weight can degrade playing consistency through a set.
Unwanted weight variation of shafts and club heads affect feel and playability through a set. Taking the time and effort to verify each shaft, clubhead, and grip in building a custom set avoids this problem.