What octane should you run in a stock 2008 Outlaw 450 mxr? Can you run 87? Help

 

Thats a high compression ratio KTM high performance motocross motor. My guess is it uses high octane for best results but will run on regular if need be..

 

The 450 and 525 recommend 91 octane minimum on stock engines. We had a lot of guys with highly modified engines mix high octane pump gas at a 50/50 ratio with VP 108 octane race gas to run cooler and more efficiently.If you don't have a manual here's a link to the 450/525 pdf service manual that should be of help.PartShark.com - Motorcycle Parts, ATV Parts, UTV Parts, PWC Parts, Powersports Apparel, Motorcycle Accessories for OEM and Aftermarket.