“2019 Phantom X 5.5, the same compact head as the X5 but with a jet-neck giving toe hang and toe flow. Suits a slight-arc stroke. A favorite for blade players wanting mallet stability.”
Identical head casting to the 2019 X5, but Scotty fit it with a small slant ('jet') neck that produces roughly 30 degrees of toe hang for players with an arced stroke -- the same neck concept he'd hand-welded for Justin Thomas's personal gamer back in 2016. It let golfers who preferred blade-style face rotation get the stability and alignment of the new multi-material mallet platform without switching to a face-balanced stroke. Sold at the same $429 as the rest of the 2019 launch lineup.
Its notability is earned, not manufactured: the shape and neck concept trace directly to the custom putter Scotty built for Justin Thomas in 2016, and Thomas won 12 of his first 13 PGA Tour titles (including the 2017 PGA Championship) gaming that setup before Scotty formalized it as the retail X5.5. That tour pedigree, documented across Titleist, GolfWRX, and Golf.com, is real; it is still a mass-retail putter, not a scarce collectible.
Players with a slight-to-moderate arc stroke (more rotation through impact) who still want a modern mallet's alignment and stability rather than a blade. Not for straight-back-straight-through putters, who should default to the X5.
Launched alongside the X5 in the original April 2019 Phantom X family. Titleist later issued a separate $850 limited 'Inspired by Justin Thomas' X5.5 (2,020 units, hand-welded neck) in September 2020 built to Thomas's exact 34.5-inch tour specs -- a distinct, far rarer collector piece from the standard retail X5.5 covered here.
Same head/perimeter weighting as the X5, but the slant-neck toe hang moves the balance point off pure face-balance, which trims a touch of raw forgiveness for arc-stroke players in exchange for stroke-path feel -- hence one point below the face-balanced X5 rather than an identical score.
Calibrated across the whole catalog — a tour blade scores low here on purpose; it means control, not ease.
Standard 2019 X5.5 heads trade in line with the rest of the launch-year Phantom X mid-mallets, roughly $255-$350 private-party in 2026 (per scottyindex.com's X5 comp data), clean with headcover. The 2020 'Inspired by Justin Thomas' limited edition is a different market entirely and commands a real premium over standard retail due to its 2,020-unit cap and hand-welded neck.
Reading is one thing — hitting is another. Book a bay and see the numbers for yourself before you buy anywhere.
