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Changed the front sprocket today...

This is a discussion on Changed the front sprocket today... within the ZR-7 Maintenance forums, part of the Kawasaki ZR-7 category; WOO-HOOOOOO!!!!!!!! Man, what a difference the 17-tooth sprocket makes! The bike doesn't really pull any less, but boy can I really scoot now...It must have ...

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  1. #1
    Rising Star 2fast4u's Avatar
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    Thumbs up Changed the front sprocket today...

    WOO-HOOOOOO!!!!!!!!

    Man, what a difference the 17-tooth sprocket makes! The bike doesn't really pull any less, but boy can I really scoot now...It must have added about 15-mph to the top end...I was so used to the 16T sprocket that I found myself forgetting fifth gear...I usually ride by the sound and feel of the engine, this is going to take a little getting used to...Here I am just chugging along going 85-mph (indicated) and only turning about 5500-rpm's...Used to run about 6300-rpm's at that speed...I better watch it before the coppers catch me speeding, it's real easy to go faster than before...Oh yeah, it's a hell of a lot easier to remove the bigazz nut on the sprocket with an impact gun, trust me on that one!

    WOLF, a.k.a. 2fast4u


    "There is nothing so likely to produce peace as to be prepared to meet the enemy." George Washington

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  3. #2
    Supreme Being Pete's Avatar
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    Another convert

    Really does make a big difference for such a small outlay

  4. #3
    West Coast Moderator Martin64's Avatar
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    I have to change the chain and both sprockets either Monday or Tuesday (depending on which one I decide to take off for working tomorrow), but I did get another 17T to replace worn out one.

    I don't know if it was just the shop I chose this time or what the deal was, but for some reason they couldn't get a Sprocket Specialists 38T from them, so instead of screwing around I told 'e, to just order me a stock Kaw rear sprocket and the went through Parts Unlimited for the front. If anyone needs that part number as another option to the Sprocket Specialists, it's K22-2731
    ZR-7OA #110
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  5. #4
    Maintenance Overlord graeme gould's Avatar
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    2fast4u's "bigazz nut"

    Sometimes referred to others as the "pig nut"

    gg at Perth, ava good day
    Graeme Gould at Byron Bay the most Easterly part of Australia

  6. #5
    West Coast Moderator Martin64's Avatar
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    If anyone needs that part number as another option to the Sprocket Specialists, it's K22-2731
    ....hold that thought..... I changed my chain and rear sprocket today but the above front sprocket isn't accurate. I had to take it back because it was too wide and wouldn't fit between the chain rails. I'll post the correct one when it comes in.


    But I did get a new toy today. I went with the thought of using an electric impact and Harbor Freight had one on sale for $49.99 that worked just great. I figure I can use it a bit more since I'll be re-doing my '70 Chevy, so justifying was pretty easy.

    And for everyone that thinks you have to change sprockets every time you change chains...... guess again. I compared my old rear sprocket to my new OEM Kawasaki rear sprocket and I can honestly say I don't know why I did change the rear sprocket. I lined them up and there was not that much difference. And for over 44,000 miles, that says alot for the stock sprocket. Front sprockets are a little different story. The stock OEM front sprocket I changed out about 30,000 miles and it was dead, showed lots of wear. The Sprocket Specialists 17T I have on there now is ready to be changed though. So I would recommend changing front sprockets when the chain is replaced, but the rear sprocket can go for quite a while provided you keep up with the chain tension (too loose is better than too tight).
    ZR-7OA #110
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  7. #6
    Gold Member/Community Dad Berto's Avatar
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    Martin, was thinking about one of those guns - dang Harbor Freight is about 5 miles from my house, kinda hard on a guy ya know.

    What's the max torque rating on that one - 225? Don't need to go overboard but never hurts to prevent another hernia.
    Berto
    ZR7OA Member#: 229

  8. #7
    West Coast Moderator Martin64's Avatar
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    .....here it is...... the case that it comes in is pretty flimsy, but I usually end up throwing them away. But since this is such a low use item I may keep it until it falls apart.


    BTW..this gun is NOT in their sale flier, so if you want it at this price you need to print the page from their website and take it in and they will honor it, but I would do it quick like just to make sure.

    http://www.harborfreight.com/cpi/cta...108&pricetype=
    ZR-7OA #110
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