I have a 1982 Honda Atc 250r. What size is the rear sprocket? Is it like 44 or 41? I would like to go with a 39 or so. Where can I get one? With chain too.

Thanks in advance

 

I might not have a choice, but if I do, which should I choose for the sprocket? Aluminum or steel? And why?

 

By going with a smaller sprocket in the rear, it actually lowers the gear ratio (the tires spin less). Which equals less torque? Here is a chart I found
http://www.sprocketcenter.com/produc...ts/sc_gear.asp

 

ok i think the size sprocket would be around 38-40 and front would be 14, i own a 1985 atc and i have a 36 tooth in back and a 13 tooth in front i like this combo becuase i can maintain a good torque and speed. well the question is for the aluminum or steel question if you are planning to race like in competitions and you are going to upgrade every single thing to lightweight aluminum for race conditions then yes go with aluminum, but if you are just using it once a while like on weekends to go screw around at the dunes or something go with steel because i lasts a hell of alot longer then aluminum it weighs about 7 pounds more i think than aluminum but if you are just changing the sprocket to aluminum it makes no diffrence i mean i am pretty big for my 250r and with changing from aluminum to steel no diffrence you will see except for longer lasting steel! lol. next about the sizes the bigger in front and small in back less torque so after you hit a hill you will see the diff good for straight also higher top speed but acceleration is slow , so that means small in front big in back hella torque fast acceleration for trail riding its good lot of hill climbing with that alot of torque you will be able to bunny hop the thing lol.i like my combo still alot of torque and speed i have 13 front 36 back. whats really cool if you know someone with a machine shop you can play with these sizes alot only couple hours to do a sprocket if you dont like change it. well hope it helps little bit

 

The front is 13, the rear is 44. I hope this helps.

The front about $13.99-13 teeth.

The rear about $30-38 for aluminum. 57-63 for steel.

The prices is from Dennis Kirk.com

 

I got steel rear from Parker Yamaha in Arizona and I got 42 teeth stock was 44 teeth, get a new chain too. Steel will out last the aluminum one.