High Power Model Rocketry

Magnum PK-84 Fin Set

Magnum PK-84 Fin Set - Main image
$19.71 $27 In stock

This fin set is designed for the Magnum PK-84 rocket, providing the necessary fins for your build. It includes three fins, each 1/4 inch thick, made to fit the Magnum's 54mm motor tube.

  • Includes 3 fins for the Magnum PK-84
  • Each fin is 1/4 inch thick
  • Compatible with the Magnum's 54mm motor tube
  • Quality construction from LOC Precision
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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Delivery costs

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Returning an item

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (5.0 / 5 · 5 reviews)

Claire ★★★★★

These dropped right onto my 54mm motor tube with almost no sanding needed, which was a nice surprise for a scratch build. All three fins matched each other well, no warping in the stack. Should hold up fine on the bigger motors.

Scarlett I. ★★★★★

The 1/4 inch thickness gives these fins a solid, sturdy feel that made assembly confidence-inspiring. They mate cleanly with the 54mm tube and the trio is perfectly matched for the build.

Mia A. ★★★★★

Fins slid right onto the 54mm motor tube without any sanding or fuss, which saved me a whole evening of prep work. The 1/4 inch thickness feels sturdy enough that I'm not worried about them snapping off on a hard landing.