Which rev limiters work the best for the 400ex. I'm thinking about a white brothers. Any suggestions or recommendations. Thanks

 

On the dyno, there is no gain.

 

Rev limiters do not work on stock 400's. They will help when you change the sweet spot. Stock 400ex max hp is around 8200 rpm, from there hp drops. 416, 426, 435, 453 ect...max/hp rpm rises accordingly with displacement and compression ratio. If I'm wrong please correct me, cause that's the way I understand it.

 

yea I beleive you're right pud

 

Do they give it any more speed?

 

Well, while my 440 was on the dyno, we changed the rev box, there was no hp gain.