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  • Razors Edge Concaves for John Deere combines
    $11,999
    Only 30 available for 2025
  • Razors Edge Concaves for John Deere X9 combines
    $14,999
    Only 15 available for 2025
  • Razors Edge Concaves for CaseIH combines
    $11,999
    Only 20 available for 2025
  • Razors Edge Concaves for Fendt combines
    $14,999
    Only 15 available for 2025

Introducing

Revolutionize Your Harvest with Razors Edge Concaves!

Unlock a new level of efficiency with Razors Edge Concaves by Thunderstruck Ag – the concaves designed to make your harvest smoother, faster, and more productive. Say goodbye to the hassle of cover plates and experience the precision of our unique razor-edge design for unbeatable threshing.

Cut down on grain loss and keep material flow smooth and consistent – no more overloads or downtime. Whether you’re switching crops or pushing through tough conditions, Razors Edge adapts effortlessly, delivering seamless performance.

Why You Should Upgrade to Razors Edge Concaves

  • Maximized Threshing Efficiency

    Our unique design tightens where crops hit hardest, preventing overload and boosting performance.

  • Multi-Crop Flexibility

    Handle a wide range of crops like wheat, soybeans, corn, and canola with a single system—no need to swap out parts.

  • Less Grain Loss, More Productivity

    Ensuring smooth material flow and fewer bottlenecks, these concaves help you get the most out of every acre.

  • Built for Durability

    Engineered tough to stand up to the demands of high-yield farming season after season.

Razors Edge Feedback

  • Slowing down the rotor has definitely helped with the rotor loss, which has felt wrong. Usually you have to speed it up to get it to thresh better, but it just works. It's awesome.

    Keenan, Tester of the Case IH

  • We've been running them there for a few days in some pretty high yielding volume and, we're having no capacity issues or rotor loss issues.

    Robert, Glenvale Farms, Tester of the John Deere

Razors Edge Concaves for John Deere combines

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See Sizing Guide
Chest Size
cm
in
XS
88.9–94
35–37"
S
94–99.1
37–39"
M
99.1–107
39–42"
L
107–113
42–44.5"
XL
113–118
44.5–46.5"