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[ScottAL]

You can read about it here :
https://www.epa.gov/sites/production/files/2016-08/documents/harleydavidson-cd.pdf
The gist of it is the MoCo must deny powertrain coverage if they have knowledge 2017 or later bike was tuned with a non approved tuner.

"14. Denial of Warranty.
a. Defendants shall deny all warranty claims for functional defects of powertrain components for any Harley-Davidson vehicle (Model Year 2017 or later) registered in the United States, if any Defendants have any
information to show that such vehicle was tuned using a Tuning Product that was not covered by a California ARB Executive Order or otherwise approved by EPA."

[Yellow09SERG]

What is the bore of the 4.125 head gasket? Guess 4.160 maybe?

[cvosjoe]

What is the bore of the 4.125 head gasket? Guess 4.160 maybe?

4.150

[Yellow09SERG]

4.150

Thank you

[GMR-PERFORMANCE]

And just a heads up ,.. they will not work with a 2.120 valve. it will clip the outside edge of the valve pocket. I just did two 117 kits and had to move the pocket out .055 which will allow a 2.140 to clear.  Heads where at 88 CC TDC only 213 .045 HG

[Yellow09SERG]

And just a heads up ,.. they will not work with a 2.120 valve. it will clip the outside edge of the valve pocket. I just did two 117 kits and had to move the pocket out .055 which will allow a 2.140 to clear.  Heads where at 88 CC TDC only 213 .045 HG

Steve am I understanding right? You had to open the valve relief in the piston for the 2.12 valves?

[HD Street Performance]

Of course the amount milled, the head gasket, and the cam used will be an influence. The CP and Diamond pistons I use have larger valve reliefs without needing any mods in such situations.
Good builders check!
They also check deck height.

[Yellow09SERG]

Well Santa must have had a 117 kit in his sled as he flew over my house!! It must have fell out as he banked towards the neighbors because I found it laying in the garage. Guess being on the naughty list works out......lol.

[GMR-PERFORMANCE]

Yes

[Yellow09SERG]

Thank you for that bit of information Steve. Were these the HD pistons with the kit or one of the aftermarket ones? I will clay the motor up to check everything. Cam is .575 lift on the intake with a 2.12 valve, .030 gasket, and will adjust to 0 deck. Heads are currently at 97cc but will probably need cut to 95cc to get to around the 195 CCP. Hopefully it will all clear without a lot of machine work.

[Alex_McB]

In january/february I'd like to add the 117 kit to my 2016 CVO Limited: I already have SERT, Vance & Hines Power Duals and Monster Squared mufflers.  I read a lot of posts in this thread and I had the idea that the kit seems quite reliable and owners are happy with it.
The only info I couldn't find is about labour hours or costs. Considering here in Europe prices are about 30% higher than in the US when it's about HD parts, hours... are still hours! 
I ask because I was asked 800 euros for the job by the local HD dealer (13 hours) and I wanted to check if it's in line with US standards.

[Panhead_Jimmy]

I just had a 117 kit including the H-D street tuner and fluids installed on my '17 CVO SG and was charged 17 hours.

[FLSTFI Dave]

I just had a 117 kit including the H-D street tuner and fluids installed on my '17 CVO SG and was charged 17 hours.

Totally different motor, yours is an M8.  This thread is about the 110 twin cam motor being taken to 117.

[ScottAL]

8 hrs install labor and 4 hrs dyno time on a 2016

[Alex_McB]

Thank You for Your replies. I must admit I was surprised by the delta in terms of hours between a Twin-Cam and an M8 regarding a 117 kit installation.

In my case 13 hours are for installation only: nothing about Dyno.