Posts: 116
Joined: 1/29/2018
Location: Denver, CO USA
Hi fellow vitards, I am doing a top end on my 2013 crf450r. Have a couple questions, looking for some input.
If I install a high comp piston do I need to go to a higher volume oil sprayer? How much extra strain does that put in the rest of the motor? Lastly, will I need to run race fuel? Sorry for the dumb ?'s, but I am a vitard 
Thanks in advance for any assistance!
Posts: 3098
Joined: 10/1/2006
Location: AZ, USA
If the only change is the HC piston (assuming 13.5:1)you should be fine with stock oil sprayer and pump gas. A re-map is not a bad idea though. In my 2012 CRF450, it ran fine on pump gas with the 13.5 and a remap. When I added the stage-2 cam it started pinging so I went to 100 octane fuel.
Powerband in every gear !
