CVO Technical > Milwaukee-Eight

M8 Reliability

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Tractor Bubba:
I’m on my 2nd M8.
2019 (114) with torque cam, exhaust, SE air filter, tuner - no issues at all
(other than a couple updates), traded at roughly 30k miles.

Now have a 2023.5, 121 cid with VVT. Close to 5k miles.
Only issues have been “electrical” - throwing codes in the Skyline OS at times.

For me, the M8 have been mechanically sound and run strong.
Had TC88, 110 and of course the required Sportster (1200).
Only one that gave me any issues was the 110 (lower end locked up).

FLSTFI Dave:
I put 20K on my 17 M8.  I had no issue with it.  I put 21K on my 18, again no issues with it.

My 2019 Sumped once before it had 20K miles on it.  Being I was aware of the issue and knowing the symptoms I was able to stop it.  That was the only time

With just over 20K miles the 2019 was built.  We used the 2020 oil pump which solves the sumping.  Put just over 40K more miles on the bike before I traded it.

r0de_runr:
48k on my 19 Ultra 114 (had stock early oil pump, primary vent kit installedby selling dealer, i installed 3rd party clutch slave), 17k on my 20 cvo limited, no problems.
Lots of oiling problems on my 2018 Heritage 114.

Marty811:
I’ve had 2 M8s. A 2017 CVO Limited with a torque cam and my current 2022 CVO Road Glide limited. About 45K miles total with zero issues.
A friend totaled his 2018 Road Glide limited 114 in September that had 108,000 miles with zero problems. No oil pump upgrade either.

Scott7d:
I have a 2020 CVO Road Glide with 199,000 miles. At 170,000 it needed a new stator, each O2 sensor has been replaced once, and each compression release has been replaced once. Otherwise just basic maintenance and replacing the things here and there you'd expect like tensioners. The bike has the stock oiling system and the original compensator. It has been a tank even with consistently stretching motor oil changes out to 7,000-8,000 miles.

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