

TK TerraNav provides aftermarket GPS guidance systems and RTK receivers that work seamlessly with your equipment.
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As an authorized dealer for AGRA-GPS, we offer plug-and-play compatibility, bridging different brands and making mixed fleets easy to manage.
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Whether you're running autosteer, data collection, or precision planting, our receivers are designed to give you sub-inch accuracy at a fraction of the long-term cost of OEM systems.

Compatible
Our GPS receivers work across John Deere, AGCO, CNH, CLAAS, and more—giving you full cross-brand flexibility without switching out your existing displays or hardware.
Reliable
Backed by 50,000+ hours of field testing across North America, Europe, and Australia, our systems are proven to perform in real-world conditions with consistent RTK accuracy.
Subscription-Free
Say goodbye to unlock codes, recurring fees, and hidden costs. With TK TerraNav, you buy it once and own it—with full RTK capability included from day one.
A Better Way to Run GPS
Based in East Central South Dakota, TK TerraNav was founded by a multi-generational ag family that understands what it takes to keep a mixed fleet moving. Tired of subscription fees, locked-down systems, and compatibility issues, we went looking for a better option—and found it in AGRA-GPS.
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Now, we help other farmers upgrade their guidance without the headaches. No subscriptions. No brand restrictions. Just GPS that works—green, red, yellow, or all of the above.