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Shimano Thunnus CI4

Review Last Updated: May 2024
Nancy Perry
Product Review by Nancy Perry


Today we'll be reviewing the Shimano Thunnus CI4.

Our reviews are based on in-depth research and product analysis. Let's dive in!


  • Approved for saltwater and freshwater use
  • Lightweight, easy-to-use, and very powerful
  • Top-of-the-line quality parts
  • Utilizes stainless steel ball bearings to reduce vulnerability to corrosion
  • Respected and established brand
  • Propulsion Line Management system
  • Reputation for being resistant to line tangles


  • Price could be better

Shimano Thunnus CI4 Product Review

The Shimano Thunnus CI4 is an exceptional reel that incorporates excellent build quality at a great price.  It comes in 4 different sizes and successfully combines being both lightweight and strong, a feature not many other reels can boast of.

It accomplishes this by using only the best carbon materials, similar to that in lightweight bicycles and other high leverage equipment that need to be both strong and lightweight.

Continuing in its path of uniqueness and distinction, this reel by Shimano allows you all the power that you need to reel in big fish while keeping the Thunnus CI4 simple and easy to operate. This seems like a no-brainer to some, but you might be hard-pressed to find another reel that accomplishes this feat with the same success.

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