The RV Rocket Steering Link was invented by Terry Jantzi, an award winning RV6 builder. It will fit the RV4, RV6, RV7, RV8, Harmon Rocket II and the F1 Rocket.
The RV Rocket Steering Link replaces the traditional chains-and-springs setup that controls the tailwheel, and is a good way to tidy up the tail end of your aircraft. It weighs less and it is a simple way to get rid of those draggy looking chains.
Is it a speed modification? It sure looks like one!