The 1909 Renault Gray Model 5-D was the first Harley-Davidson motorcycle to feature a V-twin engine. Harley-Davidson The V-twin did not truly begin its takeover of the two-wheeled world until around ...

Indian also pioneered a number of engineering firsts, including electric start and lights, swing-arm suspension, leak-proof engine cases and the first V-Twin motorcycle engine built in North America.

Expanding its MX-V series engine line for the lawn and garden market, the new MX825V and MX800V carbureted engines are purpose built to optimize performance for the ZTR (zero-turn-radius) lawn mowers.