sentences:  Those two construction features make the XLV a very low maintenance motorcycle.Other technical highlights at the time of introduction were the dry sump lubrication system (with the main frame acting as an oil tank, helping to lower engine temperatures), the three valves per cylinder (two inlet valves / one exhaust valve), the two spark plugs per cylinder, and the crankshaft with off-set pins.The distinctive air scoops mounted below the fuel tank on either side of the motorbike provide additional cooling for the rear cylinder.