919 17t oem sprocket & Osram H4 hyper bulb - Wrist Twisters
 
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post #1 of 10 Old 07-23-2007, 02:15 PM Thread Starter
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919 17t oem sprocket & Osram H4 hyper bulb

I would like to do the 17t mod. Looked in the Search section and came up with two Honda OEM numbers for the front sprocket 17t, 23801 mat 000 and 23801 mat 670. Which one is correct? They are different prices.

I would also like to replace the stock headlight bulb with the Osram H4 hyper either the 70 or 80 watt. Will the stock wiring handle it and will the stock plastic housing handle it? Does anyone have any experience with these bulbs. www.rallylights.com/hella/H4.asp - 67k -

Thanks

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post #2 of 10 Old 07-23-2007, 02:27 PM
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Not sure about the OEM part numbers, but I just went with an AFAM sprocket that worked fine. Part number 20603-17. Any dealer should be able order it, but numerous on-line dealers have it too. Can't help with the headlight stuff.

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post #3 of 10 Old 07-23-2007, 03:10 PM
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Quote:
Originally Posted by Hondad View Post
I would also like to replace the stock headlight bulb with the Osram H4 hyper either the 70 or 80 watt. Will the stock wiring handle it and will the stock plastic housing handle it? Does anyone have any experience with these bulbs. www.rallylights.com/hella/H4.asp - 67k -

Someone mentioned (search) using higher than the 60W spec bulbs... But for max power I'd run heavy gauge wire with new (HB/LB) relays/fuses. I'm not happy even with the aftermarket 60W bulb's brightness. With custom wiring the limiting factor would be the bulb assembly's heat disapation. Being naked helps.

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post #4 of 10 Old 07-23-2007, 03:30 PM
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I use the OSRAM H4 Silverstars on my FZ1.

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post #5 of 10 Old 07-23-2007, 04:03 PM
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Quote:
Originally Posted by Hondad View Post
I would like to do the 17t mod. Looked in the Search section and came up with two Honda OEM numbers for the front sprocket 17t, 23801 mat 000 and 23801 mat 670. Which one is correct? They are different prices.

I would also like to replace the stock headlight bulb with the Osram H4 hyper either the 70 or 80 watt. Will the stock wiring handle it and will the stock plastic housing handle it? Does anyone have any experience with these bulbs. www.rallylights.com/hella/H4.asp - 67k -

Thanks
23801-MAT-000 should work. It fit's the VFR 800i, '98 - '01. Double check it.. but as far as I can tell.. that will work. I don't know what the 670 fits.

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post #6 of 10 Old 07-23-2007, 06:18 PM
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I'd order the AFAM. I've got close to 4k on mine. Just had it open recently, and it still looks as good as new. I had a little bit of a hard time finding one to order on the internet, but finally tracked one down on OPP Racing for about $36. Order the AFAM Front 17t, 530 chain length sprocket. Simple install, one of my favorite mods.

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post #7 of 10 Old 07-23-2007, 06:40 PM
 
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I would rather have the Viffer sprocket myself, should be real nice and quiet

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post #8 of 10 Old 07-24-2007, 03:37 AM
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I would rather have the Viffer sprocket myself, should be real nice and quiet
Not familiar with the VFR gearing....sarcasm or for real?

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post #9 of 10 Old 07-24-2007, 04:26 AM
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Stay away from the aluminum sprockets, they get eaten up pretty quickly on litre bikes. Steel only.

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post #10 of 10 Old 07-24-2007, 02:46 PM
 
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Quote:
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Not familiar with the VFR gearing....sarcasm or for real?
From what people are saying, the VFR front sprocket will fit the 919. The VFR sprocket is one tooth bigger, but should still have those rubber pads on the sides of the sprocket which mean it will be very quiet. Whereas the aftermarket one will not have the rubber pads.

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