2017 Apollo RX250 re-jet for high altitudes

Douglass · 08-05-2019, 02:09 PM

Good afternoon fellas, I have a re-jet for higher altitude question.

Currently I have a Mikuni 30mm carburetor with a 27.5 pilot, needle clip in the middle, and a 120 main jet. I am currenlty at sea level (68 ft), and will be running the bike occasionally at altitudes of 5000-7000 feet in Carson City NV.

Is there any guides to help with a re-jet, or any suggestions for sizes to run? I would prefer to be on the richer side. Current temps in Carson City are between 85-100 Deg.

Thanks for the help,

Douglass

Dedbolt · 08-05-2019, 08:48 PM

This is exactly my question as well. I will be buying an Apollo 250 here in a few weeks and I live at a mile high. Was wondering how the Mikuni would do at this elevation though the VM22 was good out of the box on the 125cc. Verified by the plug color.

Sorry I can't help you, Douglass.

08-05-2019, 02:09 PM	#1
Douglass Join Date: Aug 2017 Location: Bay Area, CA Posts: 375	2017 Apollo RX250 re-jet for high altitudes Good afternoon fellas, I have a re-jet for higher altitude question. Currently I have a Mikuni 30mm carburetor with a 27.5 pilot, needle clip in the middle, and a 120 main jet. I am currenlty at sea level (68 ft), and will be running the bike occasionally at altitudes of 5000-7000 feet in Carson City NV. Is there any guides to help with a re-jet, or any suggestions for sizes to run? I would prefer to be on the richer side. Current temps in Carson City are between 85-100 Deg. Thanks for the help, Douglass
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08-05-2019, 08:48 PM	#2
Dedbolt Join Date: Jun 2019 Location: Rio Rancho, NM Posts: 25	This is exactly my question as well. I will be buying an Apollo 250 here in a few weeks and I live at a mile high. Was wondering how the Mikuni would do at this elevation though the VM22 was good out of the box on the 125cc. Verified by the plug color. Sorry I can't help you, Douglass.
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