Honda V-Twin Horizontal OHV Engine with Electric Start — 688cc, GX Series, 1 7/16in. x 4 7/16in. Shaft, Model# GX660RBAF

There’s plenty of reasons to insist on a Honda GX660 V-Twin engine. It has superior engine design, with a 900 configuration that reduces vibration and allows a compact footprint. It also has superior construction, with a forged steel crankshaft and an integrated cylinder head. Fewer parts means better durability. The digital CDI ignition coil ensures improved fuel economy and lowered emissions. Improved air cleaning system means that you can wait five times longer between filter changes.