Surprising Versus... Biswing vs Honda Pumps: Best Replacement Insights! When we replaced our Honda pump with the Biswing 3400 PSI model, we weren’t fully prepared for how seamless the swap felt. The 7/8" shaft and vertical plunger design mirrored our old Honda unit perfectly, making installation a breeze. Performance was a pleasant surprise—even though the Biswing is compatible with Honda, it delivered 2.5 GPM flow with plenty of power for tough jobs. We were especially impressed with its durability, handling lean times between gas refills without missing a beat. While Honda pumps are reliable, the Biswing’s affordability and cross-compatibility with Simpson, RYOBI, and more felt like a hidden gem for us. Ultimately, we found it hard to justify sticking with Honda after such a satisfying upgrade.