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Author Topic: 120R  (Read 2457 times)

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Lance Kuper

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120R
« on: October 21, 2021, 10:04:55 PM »
Hey all. I have a 2013 and am having a SE 120R put in it. The 110 has 10k miles on it. I was wondering if the stock transmission would be enough to handle the torque that the 120R delivers? I would like to keep everything Screamin Eagle but I'm not sure if the parts will manage.
« Last Edit: October 21, 2021, 10:15:56 PM by Lance Kuper »
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Lance Kuper

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Re: 120R
« Reply #1 on: October 21, 2021, 10:22:02 PM »
This is what I've ordered so far.
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Lance Kuper

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Re: 120R
« Reply #2 on: October 21, 2021, 10:36:35 PM »
The numbers.
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2smoke

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Re: 120R
« Reply #3 on: October 25, 2021, 01:30:10 PM »
YES and NO...
"yes" if you are easy on it. What is easy? NO drag strip style launches. NO rolling burn-outs. NO speed shifting (not letting off the gas when you shift). Not only will you kill the trans if you do these the rest of the drive line will suffer. Say good-bye to the belt also if you're taking it to bike nite at your local drag strip. The drag strip is STICKY!
Full throttle roll-ons are no problem for your stock trans. But doing any of the above will require a Baker Grudge Box with a powerfull engine like the one you are getting. Your stock clutch will need an upgrade if you hammer on it really hard.
Those numbers will get you into the high 11s in the quarter mile depending on your riding ability. Fun, FUN, FUN!!!
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BigLew

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Re: 120R
« Reply #4 on: October 26, 2021, 01:24:28 PM »
My gearbox is stock and still on a belt at 204hp and 172tq to the ground. But I'm not doing any burn outs either. Over 10,000 miles on the set up. Finally went back to 135 square 5 months ago

BigLew
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jrconn

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Re: 120R
« Reply #5 on: November 03, 2021, 03:43:35 PM »
I just had a 120r put in my 2011 cvo street glide which puts out similar numbers at the dyno sheet you showed.

I'm not sure why, but they supposedly stopped making it in 2019, and when I ordered my engine they new I wanted the 120r, but they swore to me the 120st was the only thing avaliable. Then when my motor came in, it was the 120r. 19220-16

I'm wondering if there is any differences with this 2021 120r and what the original buyers got?
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HD Street Performance

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Re: 120R
« Reply #6 on: November 12, 2021, 09:45:27 AM »
Clutch is the major upgraded needed.
The 120r over time has proven to be a very short lived motor before they need to be refreshed. Weak spots are lifters and rings. The ring life is exaggerated by the shortened rods, not a good move by the motor company.
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