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M8 124ci Build

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Old Nov 25, 2023 | 05:18 PM
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UH60Hwkdrvr's Avatar
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Default M8 124ci Build

Upgraded my 2023 Street Glide 107ci to a 124ci stump pulling monster!

Here is a list of the modifications:Fuel Moto M8 124" Piston & Cylinder Big Bore kit 11.0:1 107 engines

Screamin’ Eagle Milwaukee-8 Extreme CNC Ported Cylinder Heads (Part Number: 16500750) .540 lift springs, 41mm intake valve, 33mm exhaust valve

Rekluse TorqDrive manual Clutch Milwaukee-8

S&S Cycle M8 Head Bolt Kit

S&S Cam plate and oil pump

S&S 540C Camshaft

S&S Air Cleaner

S&S Adjustable Pushrods

Woods Knight Prowler Lifters

HPi Milwaukee-8 62mm Throttle Body w/6.3 fuel injectors

Khrome Works Outlaw 2 into 1 Exhaust Pipe

Thundermax ECM

KST Kustoms Six Bend Bagger Bars 10”

The bike has not been on a dyno, but seat of the pants tells me this thing makes north of 140 pound feet of torque! It makes big power off of idle and HUGE power around 2000rpm!!! There is a ton of roll on power at highway speeds in 5th and 6th gear. This bike rips when you get on the gas, but is pretty docile when you are not feeling the need to be a Hooligan! My only complaint is the loud exhaust. This pipe will make your ears bleed without earplugs. Oh well...

When I get this bike tuned, I will post the dyno sheet. In the meantime, I will be out riding trying not to lose my license!!

UH60Hwkdrvr




 
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Old Nov 25, 2023 | 08:03 PM
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[QUOTE=UH60Hwkdrvr;21466312]Upgraded my 2023 Street Glide 107ci to a 124ci stump pulling monster!

Sounds AWESOME!
Do it yourself?
Start with a canned tune from FM?
FM has done enough builds and dynos to get you very close to feeling is dynotune necessary, but definitely would do one with very reputable tuner.
If not a reputable tuner, I would rather just keep theirs and autotune a few times until I got close to a good tuner.

Keep us informed and ride safe👍✌️
 
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Old Nov 25, 2023 | 08:15 PM
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Hopefully you took into account that the SE Extreme heads have a larger combustion chamber than the stock heads and would require a different piston than the normal Fuel Moto 107 to 124 kits to make 11:1 If not there goes your torque monster.
 
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Old Nov 26, 2023 | 12:36 PM
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I've been looking at the Fuel Moto 124ci kit. Glad to hear that you are have a good experience .
 
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Old Nov 26, 2023 | 02:34 PM
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Originally Posted by Glenn Gorman
I've been looking at the Fuel Moto 124ci kit. Glad to hear that you are have a good experience .
You won't regret it! I've got 30,000 on mine and been riding hard for five years. My wife admitted that she had begrudged the money I spent on the upgrade then added that our next bike needed to go like this one!
 
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Old Nov 26, 2023 | 07:10 PM
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Nice to hear you are liking it. I am slowly acquiring parts to do my swap at some point. I’ll be using the RS 468 cam and have the ported S&S intake already.
 
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Old Nov 28, 2023 | 11:32 PM
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That's a nice build. You are going to have a lot of fun with it. My Fuel Moto 124" Build is 3 years old and going strong.
 
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Old Nov 29, 2023 | 06:27 PM
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[QUOTE=UH60Hwkdrvr;21466312]Upgraded my 2023 Street Glide 107ci to a 124ci stump pulling monster!

Here is a list of the modifications:Fuel Moto M8 124" Piston & Cylinder Big Bore kit 11.0:1 107 engines

Screamin’ Eagle Milwaukee-8 Extreme CNC Ported Cylinder Heads (Part Number: 16500750) .540 lift springs, 41mm intake valve, 33mm exhaust valve

Rekluse TorqDrive manual Clutch Milwaukee-8

S&S Cycle M8 Head Bolt Kit

S&S Cam plate and oil pump

S&S 540C Camshaft

S&S Air Cleaner

S&S Adjustable Pushrods

Woods Knight Prowler Lifters

HPi Milwaukee-8 62mm Throttle Body w/6.3 fuel injectors

Khrome Works Outlaw 2 into 1 Exhaust Pipe

Thundermax ECM

KST Kustoms Six Bend Bagger Bars 10”

The bike has not been on a dyno, but seat of the pants tells me this thing makes north of 140 pound feet of torque! It makes big power off of idle and HUGE power around 2000rpm!!! There is a ton of roll on power at highway speeds in 5th and 6th gear. This bike rips when you get on the gas, but is pretty docile when you are not feeling the need to be a Hooligan! My only complaint is the loud exhaust. This pipe will make your ears bleed without earplugs. Oh well...

When I get this bike tuned, I will post the dyno sheet. In the meantime, I will be out riding trying not to lose my license!!

UH60Hwkdrvr



Is that the S&S mini tear drop? Did you get the 1" taller air filter that S^S offers? I do like the look of it on your bike, gives it a touch of old school.
 
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Old Dec 6, 2023 | 07:01 PM
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Good Stuff UH60,,,How do you like the Khromewerx 2/1
 
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Old Dec 6, 2023 | 07:31 PM
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I did the work myself. I had a canned map from fuel moto plugged into my Thundermax. The bike rips from 2200rpm and up. The 2into 1 pipe is loud, but I wear earplugs, so I can live with it. I upgraded the stereo, so the pipe doesn't bother me as much....I just turn up the volume and keep ridin'.

UH60Hwkdrvr
 
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