17 107 to 18 117 will it bolt on

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Mar 20, 2019 | 11:27 AM

GeosM8

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Stage I

Joined: Mar 2019

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From: Coarsegold, CA

17 107 to 18 117 will it bolt on

Good Morning everyone, New Member here, looking forward to good chats and info. Question, I have a 2017 FLHXS 107 and and have an opportunity and get a "complete" top end from a 2018 CVO 117, will this bolt onto my 107? I suspect not but am looking for the particulars as to why not but hoping for a yes. LOL THNX

Mar 20, 2019 | 03:23 PM

Hairy Larry

Big Kahuna HDF Member

Joined: Oct 2010

Posts: 51,364

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From: Texas

Quote:

Originally Posted by GeosM8

Welcome to the forum. Yes it will bolt on but you can't use those pistons because the 117" CVO has a 4.5" stroke and your bike has a 4.375" stroke. But you can use it to bring your bike to a 117" by boring the cylinders to 4.125". Fuel Moto and Zipper's provide this service with matching pistons.

BTW, you might want to move this to the Milwaukee Eight M8 forum so you'll get more feedback.

https://www.hdforums.com/forum/milwaukee-eight-m8-198/

Last edited by Hairy Larry; Mar 20, 2019 at 04:38 PM.

Mar 21, 2019 | 07:21 AM

Agoober

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Joined: Jan 2019

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From: Nunya.

You will want the pistons from the 107 to 114 Stage 3 kit for it to be a true bolt in and you'll be at 114.Not sure about valve springs though, I am old .