Willett Family Estate Single Barrel Bourbon 9 Year Old #4374 140.4 Proof

140.4 proof. 9 years. Single barrel #4374. Willett Family Estate Bottled — the highest-proof 9-year Willett in the current collection and among the most powerful own-distilled Willett expressions across all age tiers.

At 140.4 proof, barrel #4374 is exceptionally high for a 9-year expression — approaching the proof levels of the oldest BTAC GTS vintages and exceeding most 10, 11, and 12-year Willett barrels also in the collection. This reflects an unusually aggressive barrel cycling trajectory for this specific rickhouse position. Note this barrel shares the same barrel number (#4374) as an OOS 9-year at 130.2 proof — a different barrel entirely, illustrating how barrel numbers can repeat in the Willett program.

Specs

• Distillery: Willett Distillery, Bardstown, Kentucky
• Style: Kentucky Straight Bourbon Whiskey, Single Barrel, Cask Strength
• Age: 9 years
• Proof: 140.4 (70.2% ABV)
• Barrel: #4374
• Size: 750ml

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Frequently Asked Questions

• Is 140.4 proof unusually high for a 9-year bourbon? Yes — approaching the proof levels of deep-vintage BTAC GTS expressions at just 9 years. Reflects an exceptionally aggressive aging trajectory for this barrel's rickhouse position.
• Is Barrel #4374 (140.4 proof) still available? Yes — available now.