A dependable control system is essential for safe, predictable RC flight, and DU-BRO’s Safety Lock Kwik-Links are one of the simplest and most secure ways to connect your pushrods to servo arms or control horns. These small components play a big role in keeping your airplane flying safely, and learning how to use them properly ensures you get the full benefit of their locking design. In this DU-BRO 101 walkthrough, Joshua demonstrates how these clever connectors work and why they’re an excellent upgrade for any RC aircraft.
If you’re building, repairing, or upgrading a model, DU-BRO Kwik-Links and linkage hardware are available in multiple sizes, materials, and thread types to match almost any setup.
What Makes Safety Lock Kwik-Links Special?
Unlike traditional clevis-style connectors, Safety Lock Kwik-Links incorporate a locking sleeve that slides over the connection pin. This prevents the link from opening or falling off during vibration, aerobatics, or long-term use. A small groove at the end of the pin provides a positive “click” when the lock engages, giving you both tactile and visual confirmation that the link is secured.
This locking feature makes them ideal for:
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Rudder and elevator connections
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Aileron linkages
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Throttle pushrods
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Any high-stress, high-vibration control system
DU-BRO also manufactures matching servo arms, horns, and hardware that pair perfectly with Kwik-Links.
How to Install DU-BRO Safety Lock Kwik-Links
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Slide the Kwik-Link onto the servo arm or control horn
As with any quick link, angle the link slightly to slip it into your selected hole on the servo arm or horn. For the demonstration, Joshua used a DU-BRO servo arm. -
Align the locking pin
Make sure the pin lines up correctly with the opposite side of the link. Because the housing is plastic, the pin may slide back slightly, so keep a small tool nearby—such as needle-nose pliers—to nudge it fully forward. -
Engage the locking mechanism
Squeeze the locking sleeve until it clicks securely into place. Do NOT force it; if it doesn’t seat smoothly, realign the pin and try again. Forcing the lock may damage the safety feature. -
Verify the connection
A correctly locked Kwik-Link will have the sleeve fully seated in the pin groove. This ensures the link cannot pop open unintentionally.
DU-BRO makes many sizes of Kwik-Links, making it easy to match your control rods and thread sizes.
Why You Should Use Safety Lock Kwik-Links
These connectors make inspection and maintenance extremely easy. Their visual contrast makes it simple to verify whether the lock is engaged, and the design prevents accidental opening during flight. This makes them especially valuable for annual safety inspections or pre-flight checks.
If you discover wear, damage, or looseness, replacing a Kwik-Link is inexpensive “insurance” for your model. Pair them with DU-BRO linkage hardware for the best possible reliability.
For builders looking to upgrade or overhaul their control systems, DU-BRO carries a full line of servo hardware, clevises, connectors, and rods.
Fly Safer With DU-BRO Hardware
Safety Lock Kwik-Links offer a simple way to improve the security of your RC control system while making inspections faster and more reliable. Whether you’re building a new airplane or upgrading an older one, these locking connectors are an excellent choice for long-term flight safety and peace of mind.
