JB Securities quoting Sri Lanka's motor vehicle registry data said motor cycle sales rose 18 percent to 17,031 in April 2014 from a year earlier.
Two years ago in April 2012 the financing share of motor cycles was only 45.9 percent. The ratio had climbed to 62.9 percent by April 2014 as prices rose due to rupee depreciation and taxes.
It is not yet clear whether the higher purchases are a leading indicator of confidence returning to purchase decisions following the end of a balance of payments crisis in 2011/2012.
But truck sales were sharply down with mini trucks down 26 percent to 988 units, lite trucks down 26 percent to 226 and heavy trucks plunging 48 percent to 97 units.
Hand tractors were down 56 percent to 248 units and large tracktors were down 39 percent to 93.