JS ThrusterJS Thruster Surfboard Fins A balanced, all round fin designed for fast and powerful surfing. Our JS template has a long base to produce drive and hold, while a relatively tapered tip allows release when pushed out of the lip. Weve used this fin in a wide range of conditions across our range of models, from step downs like our Xero Fusion up to the most high performance shortboards in the range. Itll provide you with extra confidence on rail and