The Kyosho 94078 SUS Turn Fin R&L is an RC-scale replacement turn fin set supplied as left and right components, intended for use on Kyosho's Boats & Yachts Jet Stream 600 line. The product name indicates SUS construction for corrosion resistance in model boating environments.
Functionally the pair provides adjustable stern guidance and fine-tuning of yaw response on jet-style model boats. As replacement parts they occupy the same mounting locations as the original fins and act to influence how water flow exits the hull aft of the jet unit, offering a straightforward way to adjust handling balance on the water.
Installation notes: the fins are supplied as left and right pieces, they mount to the same points used by the factory items and should be secured with the existing hardware. When fitting, confirm orientation for R and L, check alignment with the hull centerline, and inspect that the fins clear the jet outlet through full throttle and steering travel.
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