Unfortnately we can not get ahold of Rocket to get more info on the header. E If it fits with OEM slip on etc.
See dimensions of the tail end. Be sure to confirm your slip on will fit. Please review all pictures to asses the condition of the item. The item "2015-2016 Honda CRF450R CRF 450R Rocket Exhaust Header Head Pipe" is in sale since Wednesday, May 22, 2019. This item is in the category "eBay Motors\Parts & Accessories\Motorcycle Parts\Exhausts & Exhaust Systems\Headers, Manifolds & Studs".The seller is "privateermxsupply" and is located in Temecula, California. This item can be shipped worldwide.