Mercury's new 115 uses an all-new 106.5-cid four-cylinder powerhead, and it's the first EFI in Merc's four-stroke family. At 386 pounds it's not much heavier than a two-cycle DFI-110 pounds lighter than Honda's 115 and at least 30 less than anyone else's four-stroke 115. The all-new four-stroke 50 and 60 are built on the same four-cylinder 60.8-cid block, larger than last year's four-stroke 50. Each has a 15-amp alternator. At 236 pounds for the standard lower-unit model (Bigfoot models are available for both and add 16 pounds), the 60 tips the scales at around 84 pounds less than the only other four-stroke 60 currently out there.