Opinions please.
103 to 107 is only 4" more, so at the most basical level, without other the upgrades, work off a 1" to 1 hp ration. The voodoo must be in the other engine improvements, eg the higher compression pistons and the cams in the kit. If it's about economizing, you could just do cams and compression and would not give away much.
What is the Fuelmoto kit, $1200 plus tax and labor? Looking at the Woods dynos, there's really not an awful lot over just the cams for, what, $400.
I'd leave the cylinders and pistons until you need to bore them.
Ditto, you could pick up big improvement without going all the way with custom Ohlins.
Another question to factor into the equation is, which route do you have to take on how much interest on loans? If that's a factor, then I'd choose the zero credit, zero interest route and feel good not paying the banksters. There's your big loss in either case.
I love my M8, but I didn't trade for either of those reasons.
The M8 is just slightly better power wise and the suspension was only minimally improved. It's still not super great (suspension), just a little better.
Now if you had stated that you wanted a very smooth near vibration free engine with linear near-electric motor throttle response, combined with the best primary/compensator setup ever to be released since 2007 with no neutral rattle, idle racket, or top-end noise.... yeah I'd recommend the M8.
Other than that, it seems you should improve what you already have because "more power" and "better suspension" are common complaints across both platforms.
Only one platform was slightly improved, but you'll probably want more.
That said, looking forward, the M8 stands to make the most power with upgrades. It would be the platform I'd build on given the option.
Last edited by lp; Feb 19, 2018 at 07:18 AM.
I love my M8, but I didn't trade for either of those reasons.
The M8 is just slightly better power wise and the suspension was only minimally improved. It's still not super great (suspension), just a little better.
Now if you had stated that you wanted a very smooth near vibration free engine with linear near-electric motor throttle response, combined with the best primary/compensator setup ever to be released since 2007 with no neutral rattle, idle racket, or top-end noise.... yeah I'd recommend the M8.
Other than that, it seems you should improve what you already have because "more power" and "better suspension" are common complaints across both platforms.
Only one platform was slightly improved, but you'll probably want more.
That said, looking forward, the M8 stands to make the most power with upgrades. It would be the platform I'd build on given the option.
103 to 107 is only 4" more, so at the most basical level, without other the upgrades, work off a 1" to 1 hp ration. The voodoo must be in the other engine improvements, eg the higher compression pistons and the cams in the kit. If it's about economizing, you could just do cams and compression and would not give away much.
What is the Fuelmoto kit, $1200 plus tax and labor? Looking at the Woods dynos, there's really not an awful lot over just the cams for, what, $400.
I'd leave the cylinders and pistons until you need to bore them.
Ditto, you could pick up big improvement without going all the way with custom Ohlins.
Another question to factor into the equation is, which route do you have to take on how much interest on loans? If that's a factor, then I'd choose the zero credit, zero interest route and feel good not paying the banksters. There's your big loss in either case.
The Best of Harley-Davidson for Lifelong Riders
Before you go with a FM 107, have you done full exhaust, air filter, tune? Stock cams? Your 103 would respond well to the Fuel Moto formula, my little 96 sure did.
Bolting on (and properly adjusting) a set of rear Ohlins isn't a big deal, I spent an extra $125 and bought a decent cycle jack so I could do it at home. Fork cartridges are a bit more complicated and definitely more expensive, but I'd like to get them one day. Right now, the Ohlins Blacklines are great, night and day difference in ride quality vs. stock air shocks.
I've done a bunch of the above mods, but can't seem to tear into my well tuned and well running 96" although I'd love to have the FM 107 kit. But it's just not needed in order for me to enjoy the bike.
I don't see a need to buy a new bike though for your use case, the 1st and 2nd year depreciation alone would pay for some great mods on your '11 RKC.
Last edited by seanl; Feb 19, 2018 at 12:33 PM.











