The Kastaplast K1 Grym is a long range distance driver built for smooth, sweeping s-curves and tailwind bombs. K1 is Kastaplast's flagship plastic, prized for its grip and durability.

Flight Numbers: 13 / 5 / -1 / 2

K1 plastic grips confidently from the first throw and holds its shape and stability through a long life, resisting the chunking that softer plastics pick up from tree hits. It gives a clean, dependable release for a fast driver, with just enough flex to stay comfortable in colder weather.

Thrown flat with real power it carries a long, gliding flight with a small amount of high speed turn before settling into a stable line and finishing with a moderate fade. That combination is what makes it useful for smooth anhyzer s-curves and long tailwind holes where you want distance without the disc folding over on you.

Best for advanced players with the arm speed to get a 13 speed driver up in the air, since a slower release will not unlock the full flight this mold is built for. It rewards a clean, powerful release more than a beginner-friendly one.

Want to compare it to a proven distance benchmark? The Innova Star Destroyer is the usual measuring stick. Looking for something a step down in speed? The Discraft ESP Heat is easier to control. See our stable distance drivers.

Speed 13, glide 5, turn -1, fade 2. Diameter 21.1 cm, rim width 2.2 cm, max weight 175 g.