honda99Horsepower: 9.9 Shaft Length: 15″ (20 Long shaft available) Starter Type: Manual (Electric Start Available) The Honda BF10D3SH Outboard MotorYes. Honda's BF8 and BF9.9 use the same 222 cc block, the 9.9 is rated for 5500 rpm while the 8 is capped at 5000. Similarly, the BF15 and BF20 use the same 350 cc block;