2010 Ultra Classic, V&H True Duals, Rinehart 4 inch with the larger baffle, high flow air cleaner, HD Tuner. looking to upgrade to a HD 110 kit. Talked to service manager at dealership today and he suggested two different kits. Part 92500031 or 92500035 (he says this will work on my bike). The part ending in 31 has lower compression but includes heads and 255 cam. This kit says it has automatic compression releases. The part ending in 35 has higher compression, does not include heads but has the 585 cam. Guy says I will need a few other things like compression releases, etc... When all said and done, the two kits are nearly identical in price give or take a couple hundred. Price isn't necessarily my concern, it's more a question of why I should choose one over the other. I ride one up 80% of the time and I am looking for HD specific kits. I am a little confused about which way to go as I want better performance without sacrificing material mileage. Not interested in non-HD kits. What are the trade-offs for either kit in terms of power, performance, reliability and mileage? Any recommendations or experiences welcome. Thanks!

 

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I mentioned that when he offered that particular part number/kit. He said they do them all the time on my year bike.

 

I don't know why any of the 110 kits won't fit any of the models, even the TC88 (pistons are now available) with the exception of the CVO models.

But to respond to the OP, if going the HD 110 kit, go all the way, spend a few more $$ and install the 92500037A kit. I know, easy to spend another's money but the OP did say that "price isn't necessarily my concern".

 

I looked at that after the dealer mentioned the two other kits. The part you mentioned seems to correlate to a conversion from 103 to 110 (tire shredder kit). I have a 96 so I don't know if that kit is compatible but I will check. It is priced about the same as the other kit with only a few hundred difference. Still looking for some pro/con comments on any of the kits given the features of each. Thanks!

 

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No case boring required for any of the 110 "drop on" kits and the 92500035 kit is a drop on kit. Every HD since the 96" motor was introduced has a 4.375" stroke, except the 2017 M8 motor and the HD 120R.

 

Heads have nothing to do with displacement; 110" is 110" regardless of the heads used. Stop posting guesses.

 

Doesn't matter 96" or 103", same cylinder spigot so cylinders will drop in. SE catalog clearly states the 92500037A kit fits '08-'13 touring models. The pros/cons are pretty obvious from reading the SE Performance catalog descriptions. If big torque is the goal, the 035 kit is the ticket; if more mid range and up power is the goal, either the 031 or the 037A kit would be my choice with the 037A kit offering more than the 031 kit. At least that is my arm chair assessment not having hands on experience with any of the three. I do believe the 0031 or the 037A would be more tuner friendly as they are both lower in CCP than the 035 kit.

 

[COLOR="Yellow"] sorry did not know you were in charge here.