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[SDCVO]

HD would not give me dealer a ship date. It started with February 25th ship date then moved to two dates in March. Now they are only saying late April.

crap--

[Pan1]

I will want to keep my warranty and use HD parts except for Fullsac head pipe but the numbers are disappointing. My HD with the 117 kit and torque 285 cam, Fullsac head pipe and fullsac 2" baffles ( using what was then a legal HD Race Tuner) 117hp and 126TQ). I would think a 4 valve head alone would achieve much better numbers not to mention the added cubic inches and factory stated increased compression ration. Not trying to be buzz kill what what's up with he m-8?

[HD Street Performance]

I will want to keep my warranty and use HD parts except for Fullsac head pipe but the numbers are disappointing. My HD with the 117 kit and torque 285 cam, Fullsac head pipe and fullsac 2" baffles ( using what was then a legal HD Race Tuner) 117hp and 126TQ). I would think a 4 valve head alone would achieve much better numbers not to mention the added cubic inches and factory stated increased compression ration. Not trying to be buzz kill what what's up with he m-8?

Exactly
And to run the kit you have to use the cat pipe from HD. Break out and use other pipes and now its a custom tune and no warranty.

You said
I would think a 4 valve head alone would achieve much better numbers

True but then you plug it up intake and especially exhaust and not give it the compression needed plus use a less than ideal cam what happens?
You get the sum of the parts and tune!

[FLSTFI Dave]

The 131 kits I have seen are coming out very close to 123 HP and 138 torque with a nice torque curve.  That is using all Harley parts and keeping the warranty.  Its really nice torque for a guy that wants warranty for two years and to be able to ride cross country.

I have seen a couple with other head pips or tunes.  HP did not break 129 and torque is in mid to upper 140's.  But no warranty.

[Iceyone]

I used the pistons, jugs and cam, i kept the stock heads (sort of a test case for the dealer) kept it under warranty, and pulled a 128 hp and 149 tq, these numbers beat the bike he did befor e me, the other bike used the whole kit except head pipe, he used a 2-1 bassani that actually robbed it of power, he pulled 135hp and 146 tq, i now have the fulsac CVO 2.5 exhaust in my hand and were gonna see if it does make a difference

[hogsty]

Just curious...How much torque can the stock belt withstand?

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[wiliturk]

Just curious...How much torque can the stock belt withstand?

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That's what I've been wondering....

[The 1]

And the numbers are in, 128 hp, 149 tq, and no i didnt use the epa approved headpipe, and yes i used the extreme flow intake, very happy with this!!

talking to the rep at bikeweek he said the stock headpipe and the kit headpipe are physically exactly the same. they just stuffed more cat material in the kit one to meet EPA regulations. use your stock one it will flow better?? if anyone is trying to keep warranty

[Threephase]

Just curious...How much torque can the stock belt withstand?

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I asked that question when my neighbor was talking about supercharging his twin cam and they were expecting somewhere near 200hp. They determined that at about 175hp or more you need to convert to chain drive. I do not need that that much hp. But....

[Mofo67]

Good news the dealer received and installed my kit. I picked it up April 18th and just finished the 500 mile break-in yesterday. So far I’m very happy with everything. I’ll change the oil one night this week and be ready to test it more on Saturday. The installing dealer does not have a dyno so no numbers to share yet, but as soon as this Covid stuff is over I’ll get it tuned. I will be using the HD SEPST for now.
Recap, after a 60 day wait, it was worth it. I’m very very happy...

[hogsty]

I asked that question when my neighbor was talking about supercharging his twin cam and they were expecting somewhere near 200hp. They determined that at about 175hp or more you need to convert to chain drive. I do not need that that much hp. But....

HP isn't going to break a belt.  Torque will

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[jachd17]

HP isn't going to break a belt.  Torque will

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 Several years ago I rode a Boss Hoss that had belt drive. I would think the torque from a V-8 would be much more than any street V-twin could muster.