Variant
OS Standard

Variant

Used Callaway Big Bertha B21 OS

2021

The OS (Oversized) variant boasts a larger clubhead profile, pushing weight to the perimeter for unparalleled forgiveness. This design minimizes twisting on mishits, ensuring maximum stability and straighter shots, perfect for golfers needing ultimate accuracy and confidence.

Release timeline

Oldest → newest

  1. 1991
    Big Bertha Original
  2. 1996
    Big Bertha 1996
  3. 1997
    Biggest Big Bertha
  4. 2004
    Big Bertha 2004
  5. 2006
    Big Bertha 2006
  6. 2007
    Big Bertha 2007
  7. 2008
    Big Bertha 2008
  8. 2009
    Big Bertha Diablo
  9. 2014
    Big Bertha V Series Big Bertha Alpha Big Bertha 2014
  10. 2015
    Big Bertha Alpha 815 Big Bertha 2015
  11. 2016
    Big Bertha Mini 1.5 Big Bertha Fusion Big Bertha Alpha 816
  12. 2017
    Big Bertha OS 2017 Big Bertha Fusion 2017
  13. 2019
    Big Bertha 2019
  14. 2021
    Big Bertha Reva 21 Big Bertha B21
  15. 2023
    Big Bertha 2023 Big Bertha Reva 2023

Other Big Bertha B21 variants

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Variant

Available

Standard

8

Balanced forgiveness, versatile distance, pure consistency.

Browse Standard →