Vanguard V-twin Big Block models available in 25-, 27-, 29-, 31-, 33- and 35-hp engines · An advanced debris management system allows engines to run cooler and cleaner · Steel-backed aluminum bearings contribute to increased load capacity and reduced engine noise · Lightweight aluminum block increases power-to-weight ratio by reducing equipment weight · A centrifugal, multi-stage industrial air cleaner provides engine protection, especially under dirty, dusty conditions