I'm trying to get the front sprocket off of my sons Dinli Helix 90...Is this a reverse thread bold holding it on? How can I keep the sprocket from spinning?

 

You just need a long breaker bar, and the threads shouldn't be reverse. To keep the tires from rotating you will probably need a person or two to hold the tires/frame from rolling forward. If it's too tough with a 2ft long breaker bar still just give the end of the handle a whack or two with a rubber mallet or hammer, they need a impact to budge them sometimes.

 

wi the chain still on use the rear brakes an then torque away

 

I have a 350 raptor and I was looking to change my sprockets because i find I go through the gears too quick!! There is no speed in the 1,2,3 gears!! I see that you went with 14T in the front and 40 on the back!! How do you like that!! Is there a big difference?

 

14/40 is good with a pipe and some mods. Whatever you do don't get renthal fronts, they wear out quick even with the chain slack and allignment good.