Abstract: An engine is described having a crankcase, a liner and a head assembly. The crankcase is split along a plane defining a two part crankcase, where fluid passages are passing through only one of the crankcase portions, so as to not require crossing the split line. A connecting rod also includes a tapered end, and the piston has a complementary carrier receiving the connecting rod.

Abstract: An engine is described having a crankcase, a liner and a head assembly. The crankcase is split along a plane defining a two part crankcase, where fluid passages are passing through only one of the crankcase portions, so as to not require crossing the split line. A connecting rod also includes a tapered end, and the piston has a complementary carrier receiving the connecting rod.

Abstract: An engine is described having a crankcase, a liner and a head assembly. The crankcase is split along a plane defining a two part crankcase, where fluid passages are passing through only one of the crankcase portions, so as to not require crossing the split line. A connecting rod also includes a tapered end, and the piston has a complementary carrier receiving the connecting rod.

Abstract: An engine is described having a crankcase, a liner and a head assembly. The crankcase is split along a plane defining a two part crankcase, where fluid passages are passing through only one of the crankcase portions, so as to not require crossing the split line. A connecting rod also includes a tapered end, and the piston has a complementary carrier receiving the connecting rod.

Abstract: An engine is described having a crankcase, a liner and a head assembly. The crankcase is split along a plane defining a two part crankcase, where fluid passages are passing through only one of the crankcase portions, so as to not require crossing the split line. A connecting rod also includes a tapered end, and the piston has a complementary carrier receiving the connecting rod.

Abstract: In some embodiments, a vehicle having multiple silencers may include one or more of the following features: (a) a chassis carrying a seat, (b) a steerable pair of front wheels and at least two rear wheels coupled to the chassis, (c) a steering member for steering the front wheels, (d) an engine carried by the chassis for powering the vehicle, (e) at least one exhaust manifold operably coupled to the engine, (f) at least one exhaust pipe coupled at one end to said at least two exhaust manifolds, (g) a first silencer coupled to the other end of said one or more exhaust pipes, (h) a second silencer coupled to the first silencer to route exhaust through the length of each silencer, and (i) a crossover tube which couples the first silencer to the second silencer.