Originally Posted by streetg131

I'm still running the belt on my 131. Granted, I think I only got bout 1200 miles on it B4 winter . I like to ride hard as well but I think I'll convert to chain when/if it snaps. And only if it snaps way early. For motor size, go as big as you can afford the first time.

Originally Posted by streetg131

I'm running the Rivera Pro clutch and so far it's holding up just fine. I'm really don't know if it's got the variable pressure plate, I didn't install it obviously. Keep in mind, my comment on the belt is only based on 1200 miles but so far so good. I've snapped quite a few belts over the years on my 100" softail, I can count on a belt bout every 20,000 miles with that bike. It always happens while pulling a holeshot. Enjoy that ride, enjoy that kid. Good Luck.

Originally Posted by Burch753

Ok, here is the deal... I am building my 09 RK this winter. My original plans were to do a 116" with the S&S 4 5/8" crank. I have purchased this crank and now I'm debating on going to the 4 1/8" pistons (124") instead of the 4" (116") I have discussed my build with Hillsidecycle (Scott). I need to get some opinions from the masses. I will either have headwork done through S&S or have Scott do them. I realize Scott's work would perform better, but I get a great deal at S&S because of my motocross sponsor. I will have HPI do my throttle body and install the 5.3 injectors I already have. I will be running a LSR 2-1 exhaust and have it tunned by Fuelmoto with the Power Vision when complete. I do have a limited budget but plan on having the cases bored to accept the bigger pistons down the road if need be. My questions/options are:

116" with S&S-worked heads: this is the current plan just because I know the S&S ported heads "can" handle the displacement....

124" with S&S-worked heads: at a couple-few hundred more, here is the problem, will the heads done by S&S flow enough for the bigger displacement? Would I need 6.2 injectors? Would my rivera primo variable clutch hold the power? Chain drive a neccessity?

116" with Scotts heads: More money than I would have in the previous 124" build but headwork would be superior.....and I'm guessing gas mileage also.


Obviously the more money this takes, the longer I will lose ride time in the spring. I am an averaged sized guy 5'11" 170lbs and I will most likely ride this thing HARD! and use it to commute. (I am after all a motocross, ex sportbike guy) I also would like to get opinions on if my belt will hold any of these builds... I'm not large and my wife is a slim 120lbs so not much weight, but I garuntee I will launch and wheel stand this thing.

Any and all thoughts are appreciated. Thanks.

Originally Posted by lkr0

what year bike are you doing this on?