Exaust brake
#16
Because the Jakes butterfly does not close to 90deg like ours, you won't be able to compair hole sizes. Also if your brother has the PRXB brake the retarding is going to be night and day between the brands.
#17
Banned
His brake was on the truck when he bought it & isn't the PRXB. It is a vacuum operated brake. Thanks for answering my questions Harold.
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