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Old 01-06-2009, 05:05 PM   #1
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After this last race with a very large oval ice rink . I realized I really need to change my sprockets if I want to beat the guys in front of me. I did fine in the standings, but I need to go up in teeth on the primary sprocket and the final sprocket. I was wondering on what teeth count you guys recommend, or if some one knows the stock sprocket size so I can order bigger ones, while I am out of town this week. Plus what brand would be good to get?
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Old 01-07-2009, 09:49 AM   #2
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Quote:
After this last race with a very large oval ice rink . I realized I really need to change my sprockets if I want to beat the guys in front of me. I did fine in the standings, but I need to go up in teeth on the primary sprocket and the final sprocket. I was wondering on what teeth count you guys recommend, or if some one knows the stock sprocket size so I can order bigger ones, while I am out of town this week. Plus what brand would be good to get?
[/b]
It's a 14 tooth stock so you will want a 15 tooth.
www.rockymountainatv.com Sell's them the cheep
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15 tooth front sprocket
Quad Tech seat cover
Web Cams
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Old 01-07-2009, 12:12 PM   #3
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Quote:
<div class='quotemain'>
After this last race with a very large oval ice rink . I realized I really need to change my sprockets if I want to beat the guys in front of me. I did fine in the standings, but I need to go up in teeth on the primary sprocket and the final sprocket. I was wondering on what teeth count you guys recommend, or if some one knows the stock sprocket size so I can order bigger ones, while I am out of town this week. Plus what brand would be good to get?
[/b]
It's a 14 tooth stock so you will want a 15 tooth.
www.rockymountainatv.com Sell's them the cheep
[/b][/quote]
Thanks bud and what about the back sprocket should I up that one too or is the 15 up front be enough?
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Old 01-08-2009, 09:38 AM   #4
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Thanks bud and what about the back sprocket should I up that one too or is the 15 up front be enough?
[/b]
It will just be trial and error.
I like 13 tooth in the sand and the 15 in the dirt.
I have never changed my rear sprocket, but you want to go smaller in the rear for taller gears.
3 teeth in the rear = 1 tooth in the front.
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KFX 470
LTE exhaust
Fuel Atv Air Box Eliminator kit
Power Commander
3*key
15 tooth front sprocket
Quad Tech seat cover
Web Cams
FPS port/ polish
JE 13.5:1 piston
Trinity Racing heavy duty Clutch/springs
Monster Energy Graphics Kit
S.R.P. steering stabilizer
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Old 01-08-2009, 11:08 AM   #5
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Quote:
<div class='quotemain'>
Thanks bud and what about the back sprocket should I up that one too or is the 15 up front be enough?
[/b]
It will just be trial and error.
I like 13 tooth in the sand and the 15 in the dirt.
I have never changed my rear sprocket, but you want to go smaller in the rear for taller gears.
3 teeth in the rear = 1 tooth in the front.
[/b][/quote]
Thanks bud I talked to one of the guys I race with lastt night and he said the same thing. So I got the 15 on order from rocky mountain ATV. And probably once I get more funds I'll get a set of rear sprockets, and smaller front sprocket for different tracks and a couple of chains just in case.
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Old 01-08-2009, 05:37 PM   #6
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so let me see if im understanding this correctly.....
so if i go from stock 14 tooth to 13 its like going from 3.73 to 4.10 in my mustang????
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2005 KFX 700
AMR 840, PORT AND POLISH, +4 VALVES, XXX cams BOONDOCKER NOS, 38mm Carbs with Custom Intakes, VENFORCER +4 EXTENSION, drag pipe, VFJ STAGE 3 WITH SECONDARY, K&N, MARVIN SHAW HILL SHOOTER'S FRONT AND REAR, FRONT LOWERING, O/B SPRING WITH WEIGHTS, DYNATECH CDI, 25 x 11 x 10 SKAT TRACK RIPPERS
04 KFX 400
440 BIG BORE KIT,13.5-1 wiseco, DYNATECH CDI, K&N, LRD EXHAUST, K&N AIR BOX LID, Fasst Flexx bars, ODI grips, 450R front shocks
06 BRUTE FORCE 750i
2 INCH LIFT snorkeled, 28 in. Mudzilla TIRES
ITP SS112 12X7 rims, dynatek cdi, K&N AIR FILTER
KFX 80
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Old 01-08-2009, 06:11 PM   #7
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Quote:
so let me see if im understanding this correctly.....
so if i go from stock 14 tooth to 13 its like going from 3.73 to 4.10 in my mustang????
[/b]
Yes, the bike will rip through the gears ,but you will fell like you need a 6th gear.(No top end)
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KFX 470
LTE exhaust
Fuel Atv Air Box Eliminator kit
Power Commander
3*key
15 tooth front sprocket
Quad Tech seat cover
Web Cams
FPS port/ polish
JE 13.5:1 piston
Trinity Racing heavy duty Clutch/springs
Monster Energy Graphics Kit
S.R.P. steering stabilizer
Full Skid plats
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Old 01-08-2009, 06:22 PM   #8
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Quote:
<div class='quotemain'>
so let me see if im understanding this correctly.....
so if i go from stock 14 tooth to 13 its like going from 3.73 to 4.10 in my mustang????
[/b]
Yes, the bike will rip through the gears ,but you will fell like you need a 6th gear.(No top end)
[/b][/quote]


ok well i want more topend so i need to go to 15. after the 440 kit, it opened up 1st - 3rd but no difference in 4 and 5. so 15 it is?
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2005 KFX 700
AMR 840, PORT AND POLISH, +4 VALVES, XXX cams BOONDOCKER NOS, 38mm Carbs with Custom Intakes, VENFORCER +4 EXTENSION, drag pipe, VFJ STAGE 3 WITH SECONDARY, K&N, MARVIN SHAW HILL SHOOTER'S FRONT AND REAR, FRONT LOWERING, O/B SPRING WITH WEIGHTS, DYNATECH CDI, 25 x 11 x 10 SKAT TRACK RIPPERS
04 KFX 400
440 BIG BORE KIT,13.5-1 wiseco, DYNATECH CDI, K&N, LRD EXHAUST, K&N AIR BOX LID, Fasst Flexx bars, ODI grips, 450R front shocks
06 BRUTE FORCE 750i
2 INCH LIFT snorkeled, 28 in. Mudzilla TIRES
ITP SS112 12X7 rims, dynatek cdi, K&N AIR FILTER
KFX 80
WHO KNOWS
2008 TERYX
27 in. Mud Lites, 2 inch lift, Team Green plastics, ITP SS212's
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Old 01-08-2009, 07:21 PM   #9
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15/37 here with 18" tires, not enough for 500', with 20's it runs good for 600'.
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Old 01-13-2009, 05:44 PM   #10
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put the 15 tooth on and holy crap did it help thanks again guys and I'll probably get a 37 for the rear next.
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