Stage 3
Road Captain
Joined: Sep 2019
Posts: 689
Likes: 339
From: Dayton OH
Plus 1. I did 107 to 114 for big bore short stroke combo. Better cam & compression. More torque than stock 107 from 2500 up plus way more HP. Dont skip the dyno tune. If warranty is not a concern aftermarket.
Stage 3 really isnt a hot rod high rpm high horse power build but rather how MoCo should have sent it out the door in the first place IMO.
Stage 3 really isnt a hot rod high rpm high horse power build but rather how MoCo should have sent it out the door in the first place IMO.
Last edited by VernDiesel; Jan 20, 2020 at 07:42 PM.
Advanced
Joined: Mar 2012
Posts: 91
Likes: 16
From: Alabama
I did a stage 3 at the time of purchase before I took possession of the bike along with an extended warranty. I never rode a 107 so I can't comment on how much of a performance gain I got. The bike runs strong and I have had no issues. 20,00miles, no sumping or transfer. 2017 SGS.
Tourer
Joined: Jun 2007
Posts: 459
Likes: 35
From: Mission canada
They're replacing both cylinders, both pistons and all the valve guides. I believe the heads are okay as they are.
The list of replacement parts is what made me think of going with Stage 3 but like you, I am no hot rodder. The 107 has plenty of "go" for the long haul touring I do... no rush to get to 70mph.
The list of replacement parts is what made me think of going with Stage 3 but like you, I am no hot rodder. The 107 has plenty of "go" for the long haul touring I do... no rush to get to 70mph.
Advanced
Joined: Jul 2017
Posts: 98
Likes: 45
From: Todd NC
I did the upgrade after adding a Fullsac MX Pipe and MK45's. My dealer gave me a deal I couldn't refuse on parts and labor. I'm very happy with the Stage 3 Upgrade to 114 and it really work up the bike both in HP and Torque. I've done a few long trips and I'm happy with the results. You'll be very happy with going to the Stage 3.
Road Warrior
Joined: Nov 2018
Posts: 1,277
Likes: 1,018
From: Eastern Ont.
Has anyone done the HD 107 to 114 Stage 3 upgrade?
I have a 2017 FLHTK and the dealer is doing a warranty rebuild of my motor due to an excessive oil consumption issue; so it would be the perfect time to do it.
Two questions come to mind;
1: Is the performance improvement noticeable enough to justify the cost?
2: Has the change affected anything else about the bike, especially reliability?
Thanks for the help.
I have a 2017 FLHTK and the dealer is doing a warranty rebuild of my motor due to an excessive oil consumption issue; so it would be the perfect time to do it.
Two questions come to mind;
1: Is the performance improvement noticeable enough to justify the cost?
2: Has the change affected anything else about the bike, especially reliability?
Thanks for the help.
1. Did u buy the bike new?
2. How many km when it started to consume excessive oil and how bad?
3. Did the dealer diagnose the problem for the excessive oil consumption?
Banned
Joined: Jan 2019
Posts: 3,036
Likes: 1,013
From: Nunya.
Sorry I thought I posted this in the "What did you do today" sticky, my bad.
OP there's no replacement for displacement. Or just go big.
OP there's no replacement for displacement. Or just go big.
Thread Starter
|
Cruiser
Joined: Jan 2018
Posts: 112
Likes: 31
From: western hemisphere
I'm sorry i have no personal experience on the m8 big bore kits yet. I have a few questions for u tho, if u dont mind.
1. Did u buy the bike new?
2. How many km when it started to consume excessive oil and how bad?
3. Did the dealer diagnose the problem for the excessive oil consumption?
1. Did u buy the bike new?
2. How many km when it started to consume excessive oil and how bad?
3. Did the dealer diagnose the problem for the excessive oil consumption?
1: Yes I bought it new near the end of summer 2017.
2: My dealer first noticed the oil use on the 32000km (20K miles) service check and asked me to watch it. I don't think it got worse than 2 -3 liters (quarts) per 8000km (5K miles).
3: My dealer told me mine is not the first M8 107 they have rebuilt the engine for this problem. It seemed to them that the problem is isolated to bikes that sat idle for a few months between production and being put into service with a new customer. I guess no one wanted a black quartz dresser as much as me.
Ride safe and enjoy.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Road Warrior
Joined: Nov 2018
Posts: 1,277
Likes: 1,018
From: Eastern Ont.
Hi SMR65, of course I don't mind.
1: Yes I bought it new near the end of summer 2017.
2: My dealer first noticed the oil use on the 32000km (20K miles) service check and asked me to watch it. I don't think it got worse than 2 -3 liters (quarts) per 8000km (5K miles).
3: My dealer told me mine is not the first M8 107 they have rebuilt the engine for this problem. It seemed to them that the problem is isolated to bikes that sat idle for a few months between production and being put into service with a new customer. I guess no one wanted a black quartz dresser as much as me.
Ride safe and enjoy.
1: Yes I bought it new near the end of summer 2017.
2: My dealer first noticed the oil use on the 32000km (20K miles) service check and asked me to watch it. I don't think it got worse than 2 -3 liters (quarts) per 8000km (5K miles).
3: My dealer told me mine is not the first M8 107 they have rebuilt the engine for this problem. It seemed to them that the problem is isolated to bikes that sat idle for a few months between production and being put into service with a new customer. I guess no one wanted a black quartz dresser as much as me.
Ride safe and enjoy.
Last edited by SMR65; Jan 22, 2020 at 05:57 AM.
