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[SEFXR4]

Hi Guys & another question:
I would like to know if there were any factory engine modifications done to the 2000 FXR4.I had a FXR3 and it ran like a Rolex,my FXR4 runs excellent and very strong.I have ridden a number of FXR family machines and I am surprised at the amount of punch the 4 has.Believe me,I did not want to get rid of the 3 but I had to.
Thanks

[RedFXR2]

To my knowledge, and I'm pretty sure, the CVO FXR series bikes all had stock Evo motors from the factory.  Of course, if you're not the original owner, there's a "who knows" factor to the motor you've inherited with the bike, as many have been at least slightly tweaked.

It would stand to reason that even a factory Evo might feel better than stock in a FXR frame in that the design was lighter and more efficiently transfers torque (stiffer) to the rear wheel than, say Dynas.

[110tHunDer]

 
My 3 runs like a Swiss watch, too, but I wouldn't call it "strong."  Vis-a-vis the 95 and 103 inch Twin Cams I have, it definitely feels like the 80 cube baby of the bunch that it is.  I look forward to waking it up a bit someday, but in the meantime, I'm just enjoyin' the ride!

[neanderpaul]

My 3 runs like a champ too...but at 275, I'd really have to tweak that to get it to zip. So, I let it be and enjoy the ride. Speed ain't as important at 40 as it was at 20. I'll take reliable over fast every time.

[Hoist!]

The only difference should be with the CA models. They had a different cam than the 49 state version. So if you tried a CA FXR3, a non-CA FXR4 would feel more responsive. But all the stock cams sucked anyway. Evo's need carb, pipes, ignition, cam, and head porting, maybe a little more compression too. An 80" Evo, setup like that on a light bike like the FXR, FLIES!!! !:huepfenjump3:

Of course a 5/8 leg (89") doesn't hurt either!!!

Hoist!

[Minglewood]

What's been said already.  Open up the air and that adds some h/p.  Change the cam, carb ignition and that changes things too.  Is your 4 bone stock?  Was your 3 bone stock?  Not even breathin' cleaner air?  Perhaps you said and I missed it.  Anyway, I've always thought my 4 had more speed but my twin cam definitely has more power.

[Hoist!]

My 89" 90 HP Evo Pro Street will blow away my hopped up 110" 115-120 HP TC SERK3! HP:WT ratio baby. That's the ticket!

Hoist!