I know the F4i is the more comfortable bike out there. But, my back is always hurting like crazy when I'm riding. I can feel the pain even worse after getting off the bike. I used to ride a Ninja 250, and that bike has a really upright positioning but it still hurt my back. I'm about 5'6" 145lbs. Is it just because my body positioning is bad? You guys having back pain riding your f4i?

Btw, I've only been riding the f4i for a couple times. Maybe I'm not used to it yet.

 

I was going to suggest heli-bars but the ninja's riding position I think is still better. My only suggestion is some core exercises. good luck.

 

I just sold my F4i, but when I had it I had a Corbin seat on it. That thing was amazing. I didn't have any back, butt, or any pains. Maybe you should look into that.

 

gonna take some getting used to.. i would say try some different positions.. its about being relaxed at the same time too..

 

i have 2 herniated disks in my lower back and it seems my back is fine when i ride. now my reconstructed knee...thats a different story.

 

I too have a herniated disk... and no back problems..

try squeezing the tank with your legs more, and consciously use your abs to hold yourself up instead of straining the back. also, keeping your heals as tight to the heal guards as you can will in a sense force you to squeeze the tank.

 

+1 that squeezing the tank with your legs to help your back is a must

 

Yoga?

and eat more.

 

I have the same problem. I do what the others have suggested and it helps a little. I am also shorter than you though. I am considering heli bars to help.

 

im 5'9 210 i dont have anyproblems, after 3 hours i have to get off the bike to feel my *** and part of my legs though, but with the way i sit im pretty much upright, i set all the way forward and up on the tank,, ride 1 handed or something man, just play with your posisitions till you find yours