“Adds 42 and 45 degree gapping options so you can bridge a modern jacked-loft iron set into the wedges without a distance cliff. Same forged reverse-muscle feel as the RM line. A players' tour-milled set-builder for the golfer chasing clean yardage gaps.”
Fourteen (a Globeride sibling brand to ONOFF) built its wedge reputation on 'reverse muscle' (RM) construction — shifting weight toward the top of the blade to raise the CG, which Fourteen says was the first technology to meaningfully relocate CG in a wedge specifically to increase spin and lower trajectory, tuned individually loft-by-loft. The RM-21 extended that platform down to a 42° loft with a squarer sole designed to blend from irons into wedges, rounding out progressively at higher lofts for varied short-game shots, forged from nickel-chrome-molybdenum steel (Fourteen forges where Vokey, a chief rival, casts). It was announced in trade coverage in late 2014 and reviewed in GOLF.com's ClubTest 2015, giving Fourteen a tour-level, gapping-focused wedge that filled the space between a set's irons and its shorter-lofted wedges.
Fourteen built a genuine tour following among better players and Japan-market enthusiasts on the strength of reverse-muscle CG engineering — GolfWRX and MyGolfSpy both cover Fourteen as a serious 'Know Your Japanese Brands' player-equipment maker — but the RM-21 specifically has no forum-cult mythology or scarcity story attached to it; it is a well-regarded, superseded generation (RM-22, then RM-4, then RM-α followed) rather than a standout cult SKU.
Best for better ball-strikers who want a wedge that gaps cleanly down from their irons (as low as 42°) with tour-level spin and feel, and who value forged Japanese construction. Not the choice for a high-handicapper seeking maximum forgiveness on mis-hits — a wide-sole GI wedge will be more forgiving, if less workable.
Announced in late 2014 and reviewed in GOLF.com's ClubTest 2015, competing against Titleist Vokey SM5/SM6, Cleveland RTX, and Callaway Mack Daddy wedges of the same window. Fourteen replaced it with the RM-22, then the RM-4 (relaunched 2021) and, most recently, the RM-α — the modern Fourteen equivalent today is the RM-4 or RM-α line.
The squarer sole at low lofts is designed to gap cleanly from a set's irons, and Fourteen's per-loft CG tuning helps spin and trajectory consistency versus a one-size sole, but this is still a forged players'/tour wedge shape with a compact profile — thin and toe-side mis-hits cost distance and spin the way any blade-style reverse-muscle wedge punishes off-center contact, more than a wide-sole game-improvement design would.
Calibrated across the whole catalog — a tour blade scores low here on purpose; it means control, not ease.
Fourteen RM-series wedges hold up reasonably well for a niche forged wedge; expect roughly $70–$130 used for a clean RM-21 head/club on eBay or via Japan-import specialists, down from an approximate $195 MSRP, with premium tour shafts pushing the high end.
Reading is one thing — hitting is another. Book a bay and see the numbers for yourself before you buy anywhere.
