Kastaplast Jarn

4 products

    4 products
    Kastaplast K1 Jarn 175g Gray/Green w/Chrome Stamp
    Kastaplast K1 Jarn 174g Dark Green-ish w/Green Sparkles Stamp
    Kastaplast Jarn (K1)
    Kastaplast K1 Soft Jarn 173g Blue w/Chrome Stamp
    Kastaplast K1 Soft Jarn 173g Purple w/White Stamp
    Kastaplast K1 Soft Jarn
    Kastaplast K3 Jarn 173g Green w/Holo Dots Stamp
    Kastaplast K3 Jarn 172g Yellow w/Silver Stamp
    Kastaplast K3 Jarn
    Kastaplast K1 Glow Jarn 170g Glow w/Teal Stamp
    Kastaplast K1 Glow Jarn 172g Glow w/Blue Shatter Stamp
    Kastaplast K1 Glow Jarn

    Kastaplast Järn Review

    The thick and beefy Järn is the ultra-reliable overstable approach disc that every serious player needs in the bag. Grab this slow utility disc for forced flexes, spike hyzers, and aggressive forehands in the 150-300 foot range. This Kastaplast Järn review is a brief snapshot of one of our most reliable approach discs in stock and for sale. 

    Kastaplast Järn Plastics

    Disc aficionados revere Kastaplast for its comfortable yet durable plastic blends. Every company claims it has the highest-quality plastic, but in the case of Kastaplast, it may be true. 

    • K1: Combines exceptional durability with a soft and grippy feel. While many premium plastics have a stiff and slick texture, Kastaplast threads the needle to produce an ultra-tough blend that maintains some flex and a comfortable hand feel.
    • K1 Glow: A bright and long-lasting glow that will stay lit for several holes of night golf. 
    • K3: The "base" plastic blend. It is less durable but has a superior grip in wet conditions. Discs will beat in faster and develop more glide quicker in this plastic.

    Kastaplast Järn Flight Numbers

    • Speed: 4.5
    • Glide: 3
    • Turn: 0
    • Fade: 3

    These are the typical specs for an overstable approach disc, but with a slight speed boost. The Järn gets more pop out of the hand than others in this class. Once it loses speed it will always finish with a reliable hyzer. Trust it on an anhzyer release angle and allow the Järn to work back to center on a slow flex line to achieve maximum distance. 


    • Diameter: 21.3cm
    • Height: 1.8cm
    • Rim Depth: 1.4cm
    • Rim Width: 1.3cm

    The Järn has a similar shape to the Discraft Zone, Prodigy A2, or Westside Harp. Its flat top, wide rim, and shallow profile give it a comfortable grip from the forehand and backhand sides. The Järn's 21.3cm diameter makes it slightly wider than others in this class. This mold has some variance; some runs have a little dome on top, while others are very flat.  


    The Järn was released in 2021, joining the faster Kaxe in Kastaplast's overstable midrange category. The company has built a reputation for innovative designs and high-quality plastics, but there are still several holes in its lineup. The Järn filled the gap that every brand needs: the torque-resistant overstable approach. 

    Skill Level Recommendations

    • Novice: Beginners will develop bad habits trying to control such an overstable disc. 
    • Intermediate: Utility disc for scramble scenarios and windy conditions. As throwing power improves, players will find more uses for the Järn. 
    • Advanced: Complimentary approach disc that will absorb maximum speed and torque without turning over. Particularly well-suited for forehand-dominant players. 
    • Pro: Sponsored pro Luke Samson bags the Järn, and uses it for drives and approaches up to 350 feet. Even with his elite power, he still describes it as "super overstable."
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