True Ames Bonzer 6″, 6.5″ & 7″ FU Box Fin

Bonzer! The True Ames 6″ and 6.5″ Bonzer box fin. In 1970, across the fertile planes of Oxnard, the Campbell brothers invented the unprecedented Bonzer design, and the rear-loading fin was its centre-piece.  Available now in this 6″, 6.5″ and 7″ versions, and a new superlight 6.5″ fin in Hexcore and Bamboo. Make sure to also get the runners for the full true Bonzer configuration. See more below…



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Bonzer! The True Ames 6″ and 6.5″ Bonzer box fin.  True Ames was first established in an old water tower in the bean fields on the fertile Oxnard plain. Just so happened the Campbell brothers had recently vacated that same water tower for better shaping quarters. After almost 35 years the True Ames/Campbell Brothers relationship continues as we are as stoked on developing and refining bonzer fins as ever!

In the quest to make the fins lighter and lighter we have introduced Hexcore technology to both the runners and centre fin. We are hoping to introduce a production version of the centre fin in solid core bamboo, using our cad/cam machining project…stay tuned.  Available now in this 6″ (150 mm) and 6.5″ (165 mm) super-light version. Make sure to also get the runners that complete the Bonzer configuration. All Bonzer and True Ames box fins fit the Universal Bahne FU Boxes.

Note: Fins are shown for colour configuration. Sizes are proportional to the fins displayed