Bettinardi's 2018 BB39 was the rounded mallet in the Stealth Black BB family, using an elongated flange and long sightline to put more mass and visual structure behind the ball. The 350-gram head was milled from soft carbon steel with Super-Fly face milling, 3 degrees of loft, and a 70-degree lie. Its double-bend fit signal needs a source caveat: MyGolfSpy's launch coverage reported a touch of toe hang rather than true face balance, while Plugged In Golf described the setup as face balanced. Both placed it with low-rotation strokes. The extended perimeter nevertheless made it the most forgiving head in that year's BB Series, combining the soft impact character of the carbon-steel line with more miss protection than its blade siblings.
The BB39 is notable as the most forgiving one-piece head in Bettinardi's 2018 BB family, with a clearly documented rounded-mallet shape and soft carbon-steel construction. The consulted sources do not show scarcity, a persistent collector premium, or a model-specific cult following, so sleeper or cult-classic status would go beyond the evidence.
The BB39 best fits a golfer with a straight-to-minimal arc who wants a large traditional mallet, a long alignment line, and soft milled feedback. Because contemporary sources disagree over whether the production setup is truly face balanced or carries slight toe hang, a buyer should verify the actual head's hang rather than fit solely from the label.
In the 2018 Bettinardi catalog, the BB39 replaced the BB40's rounded-mallet slot and sat below the BB56 in construction complexity. The BB39 used conventional one-piece carbon steel to gain stability through shape and perimeter distribution, while the BB56 used aluminum and stainless steel to pursue a more explicit high-MOI and raised-center-of-gravity story.
The BB39's elongated flange and perimeter weighting keep off-center putts on line and preserve pace better than the 2018 BB blades. It remains a one-piece carbon-steel mallet rather than a modern multi-material maximum-MOI head, so the score stops below the most stable contemporary designs.
Calibrated across the whole catalog — a tour blade scores low here on purpose; it means control, not ease.
On July 13, 2026, 2nd Swing's model page showed two average-condition, right-handed 2018 BB39 putters at $159.99, one 34 inches and one 35 inches. Callaway Golf Pre-Owned's July 1 rate card listed a $59 trade value. Those figures are dealer asks and a trade benchmark, not completed-sale evidence, and should not be presented as a guaranteed private-party range.
Reading is one thing — hitting is another. Book a bay and see the numbers for yourself before you buy anywhere.
