Just wondering is it best to leave it as it is or is there a better set up?
really depends on what kind of riding you are doing, drag racers will have a different setup than a duner and both will have different setup than a MX or trail rider.
if you have stock rear tires, leave the sprockets alone
if you are going down to a 21" tire you might want to go down 1 tooth on the rear
if you are going down to a 20" tire go up 1 tooth on the front
if you are going down to a 19" tire go up 1 tooth on the front and down 1 tooth on the rear
I took the 22" rear tires and 21" front tires off my 88 LT250R and ended up running 19" rear with 20" fronts. The absolute best thing you can do is buy a pair of G-Force extended rear hubs for a Banshee. This way you have a more common bolt pattern (4X115) and you can switch to 9" rear wheels so you have more choices in tires.
Arnt the stock tires 20 or 21?
I know the 85-86 had 22's on the rear and 21's on the front
I think the 88-92 models had 21's on the rear, not sure about the 87's since they coujld have some parts off the 85/86 or parts soon to be used on the 88-90 models, plus they had some 87 specific parts on them
Same general rules should apply that I recommended earlier.
2 strokes don't have alot of low-end, I prefer to give up some top-end speed to gain some low-end grunt by narrowing the ratio. Lets say stock is 71mph, I will sacrifice 2mph and settle for 69mph for a quicker quad.
http://www.dansmc.com/mc_software1.htmplug the #'s into the chart, use 8,888rpm as a baseline to see for yourself
The absolute best thing you can do is buy a pair of G-Force extended rear hubs for a Banshee. This way you have a more common bolt pattern (4X115) and you can switch to 9" rear wheels so you have more choices in tires.
This will work providing the rear axle is a 24 spline & not a 26 spline. If it is 26, then OEM or aftermarket hubs for the LTZ-400 or LTR-450 will work. The 4x110 bolt pattern is pretty common.
agreed, either Yamaha on 24 spline or Suzuki on 26 spline. Most 87 models did have 24 spline axles, and some 88 models did as well. I speak from experience, I had an 88, bought Z400 hubs without even counting the axle splines, found out the hard way my 88 had 24 spline axles.
if they are 24 spline, you can also use Honda TRX300EX or TRX400EX rear hubs. They give you an extra inch width on each side, just like buying a set of G-Force rear hubs. They are 24 spline, but they are just a little different. My axle was a little rusty on the ends, I sanded the ends, cleaned with WD-40 then applied some grease. I had to "convince" one of the Honda hubs on the axle with a rubber mallet and had to "persuade" the other on with a ball-peen hammer. You should be able to slide a Yamaha hub on by hand.
4X115 rear hubs off a Yamaha is somewhat common, but 4X110 from a Honda is the most common because other manufacturers use it as well. Then you can alsways use 9" rear wheels, which provides the biggest selection in tires. Most common is of course 20", Artrax makes some decent trail and MX tires, and the price is unbeatable.