Yamaha Aftermarket

[robnjules16]

I have a 2019 Yamaha 242s. are there any aftermarket upgrades I can do to increase power, speed or fuel efficiency?

 

[BigAbe75]

I have a 2019 Yamaha 242s. are there any aftermarket upgrades I can do to increase power, speed or fuel efficiency?

You may need to pick one of those 3. Usually when 1 goes up the other 2 go down.

Search the forum, you’ll find several threads, but here are the keywords to use.

1. Impeller swap - some have changed the stock impellers to the impeller that is used in the 190 series boat (I think) and found that those have a little more grab for better hole shot.

2. Lucky 13 Cone - swapping stock cones for these improves water flow for more power

3. flame arrestor - removing the flame arrestor increases your available rpms, if I remember right. I believe Riva Racing has info about that.

@swatski and @jcyamaharider are 2 folks that have done the first 2 mods. Several in the single engine boats have done the 3rd one. It doesn’t seem to be quite as common in the twin engines models.

 

[robnjules16]

Thank you for the info!

 

[jacoviii]

Do the ribbon delete. Luck cones,
Also some have done the 6CW-R1321-01-00 Impellers Better down low and Mid range about the same top end.