Happy medium for sprocket sizes KZ900

  • SeattleKZ
  • SeattleKZ's Avatar Topic Author
  • Offline
  • User
  • User
    Registered
  • Posts: 148
  • Thanks: 3

Happy medium for sprocket sizes KZ900

11 Jun 2014 09:19
#636147
I'm gonna put new sprockets and chain on my KZ900. I just put got the engine back together with APE 410 cams and MTC 1015 pistons. I'm running the stock tire sizes. I think I'd like to add a little top speed but not so much I can't jump off the line. What gear ratio would yield a nice rpm range at 70mph but still have some jump off the line?

I'm going to be using a 530 set up

Please Log in or Create an account to join the conversation.

  • 4TheKZ1000
  • 4TheKZ1000's Avatar
  • User
  • User
    Public
  • Thanks: 0

Re: Happy medium for sprocket sizes KZ900

11 Jun 2014 10:10
#636152
On my KZ 1000 I have tried these:

Sorry, these are 630 numbers on a 18" rear tire.

15 - 35 Stock on some bikes. Good for Hot-Street for built bike.
15 - 32 Stock on some bikes. I think this is a good combo for street - highway.
15 - 29 70 mph at 5000 Needs work / RPM to get out of hole on street. Great for hard launch slipping clutch. I have been 130 mph on this combo. Custom made sprocket.

14 - 35 Was way to high. 118 mph max at 9500 to 10,000 Real thrill to ride.
14 - 33 NO
14 - 32 Maybe?

Please Log in or Create an account to join the conversation.

  • SeattleKZ
  • SeattleKZ's Avatar Topic Author
  • Offline
  • User
  • User
    Registered
  • Posts: 148
  • Thanks: 3

Re: Happy medium for sprocket sizes KZ900

11 Jun 2014 10:19
#636154
I'm considering a 18/40 and buying a 17 too to see how that works

Please Log in or Create an account to join the conversation.

  • 650ed
  • 650ed's Avatar
  • Offline
  • User
  • User
    Registered
  • Posts: 15339
  • Thanks: 2833

Re: Happy medium for sprocket sizes KZ900

11 Jun 2014 10:41
#636157
You may want to take a look at this site. Ed

www.gearingcommander.com/
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

Please Log in or Create an account to join the conversation.

  • Kidkawie
  • Kidkawie's Avatar
  • Offline
  • User
  • User
    Registered
  • I bleed premix
  • Posts: 1913
  • Thanks: 243

Re: Happy medium for sprocket sizes KZ900

11 Jun 2014 12:08 - 11 Jun 2014 12:08
#636164
I went up one tooth from stock on the front sprocket on my Z1B. Still has boat loads of power and can cruise at 80mph no prob.

Watch chain clearance running o-ring 630.
1975 Z1 900
1994 KX250 Supermoto
2004 KX125
Last edit: 11 Jun 2014 12:08 by Kidkawie.

Please Log in or Create an account to join the conversation.

Moderators: Street Fighter LTD
Powered by Kunena Forum