Used pistons?! Are you kidding? SE cast pistons,hybrid camplate and a Crane 1-6000 cam ,you'll love it.

 

I think a 98" build would put a big smile on your face, but there's something else to consider especially when riding through the hills. If you have the 3:15 final gearing as most of the 88"s have (except for the early Magnetti Marelli fuel injected bikes which are 3:37) that will also make a difference as you will be running different rpm's in the same gear at the same speed as your friends.

The way I understand it with the newer 6-speeds the 1-5 gear ratio is close to the same as the 3:37's. I ran 3:37's for several years in my 98" as I wanted a little more giddy up and loved it. When I built my 120" this past spring I changed back to the stock 3:15 gearing.

That was a mistake...at least for me. I found when my friends with the 2010 6- speed and the 2000 RK 5-speed (3:37) were running in the 50-55mph range (22-2300 rpm) I was constantly seeking the right gear. In 5th I was lugging (20-2100 rpm) and in fourth I was around 27-2800 rpm which is fine but for leisurely cruising through the countryside it would have been nice to drop the r's a little.

I popped the 3:37's back in yesterday and like it much better. It seems for my style of riding I'm in the right gear a lot more often. I may or may not drop a SE 6-speed in next year just to drop the r's a bit when riding above 75mph.

Rick

 

If you get a set of pistons that dont have many miles on them and you clean them up really well you wont have any problems and will be saving money. I mean obviously youre gonna use new rings so i dont see why the used piston with new rings would hurt a thing.

 

I had a 2006 Streetbob and I bumped the motor up to a 95 with gear driven cams. HOLY COW what a difference. It would smoke all my buddies 96's without any issues at all. If I wasn't in need of a touring bike I would still have the Streetbob in my garage.

 

Your sig says you have a "Stage 3 upgrade", what is that?

 

You shouldn't give advice if you don't know WTF you're talking about. A 103 piston is not the same as a 95 piston. And a 107 piston won't even work in his bike and if it did, it wouldn't be a 99". The wrist pin locations are different, at least where I come from.

 

Plenty of kits out there to bump up the displacement and still have a reliable ride, it's been done by many, just do a search, you can also call people like Fuel Moto or Dragos who do many builds for questions on cams etc. Do you plan on DIY or having it done?

 

He is correct about these pistons not being interchangeable, the only thing they have in common is the diameter.

 

http://fuelmotousa.com/98kit.htm

 

I will be having it done. I'm a landscaper not a harley mechanic LOL!