Installed 30T Primary Gear.
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Road Captain
Joined: Sep 2005
Posts: 558
Likes: 2
From: Richardson, Tx
Im wondering why you changed this sprocket and not just the final drive sprocket. I had an evo where I changed the comp sprocket and the bike wouldnt do over 50 on the freeway, but I could easily loose it in the first 4 gears it was so torquey. Now I have an 07 and did the 103 kit and lost first gear because it was so high I was surely going to burn out my clutch, and I could cruise between 45-100 in 4th gear. The final drive change was done and the only issue I had was speedo error of 4-7 mph.
Is this the same issue you had that lead you to make this change? If so I can post a list of the parts if anyone is interested. If Im talking about something off topic my apologies.
Is this the same issue you had that lead you to make this change? If so I can post a list of the parts if anyone is interested. If Im talking about something off topic my apologies.
I made my change because the gearing was too tall for my taste in first gear. It not only fixed that but made it perform better in all gears. It now starts off in first close to the 09 I rode yesterday and performs like a 2006 in the other gears. That the best I can do to describe it. There is no ill effect except losing the 6th gear light. You say it was torquey but I don't see that all all. Maybe you are waiting to shift too long. That would give the feel you are describing.
I agree there is more than one way to change the gearing and I went with the 30T and new chain and it worked for me. If it hadn't I would have tried something different. This is the least invasive method of re-gearing.
Seasoned HDF Member
Joined: Jan 2006
Posts: 11,471
Likes: 2,998
From: Charleston, SC
Didn't in 09 they just add a larger Rear (belt) sprocket? To like a 70 tooth. Why wouldn't you 08 and below guys just do that? I'm sure someone sells a 70 tooth somewhere... Would loose the IDS though.
lp
lp
Grand HDF Member
Joined: Dec 2007
Posts: 4,999
Likes: 55
From: Bay Area
I think by going with the final drive gear change and using the Japan model belt, it doesnt change the driveability factor too radically.
Grand HDF Member
Joined: Dec 2007
Posts: 4,999
Likes: 55
From: Bay Area
Because it is much easier to go with a -2 tooth final sprocket and go with the japanese model belt from HD. At least thats what the builders I talked to say, I think there was some issues on the thickness of the pullies where the bigger rear sprocket was for the wider belt and the bolt pattern may be somewhat different, not 100% on that though. And I did that on mine and it is sweet, and by doing this you may be able to keep the IDS. My $.02
Thread Starter
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Road Captain
Joined: Sep 2005
Posts: 558
Likes: 2
From: Richardson, Tx
That explains your problem. You wouldn't want to do this on a 5 speed. You need the 6th speed or it would act like you said.
Seasoned HDF Member
Joined: Oct 2006
Posts: 5,977
Likes: 85
From: Nevada
On 07s and 08s you would have the cost of the pulley and a new belt. There is significantly more labor involved vs. changing either of the primary gears.
Cruiser
Joined: May 2008
Posts: 149
Likes: 0
From: Lockport, NY
regearing 2007
I read about this same thing on another forum a couple years back. They called it a gear reduction I think. Ive got a 2007 rk and it sure could use a little regearing . Could someone please post part#'s and supplier source or website . How do you think it will work with 103" . Are you still able to hit high speeds on highway and cruise in 6th gear?
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Seasoned HDF Member
Joined: Jun 2006
Posts: 28,524
Likes: 3,953
From: Vermont
I read about this same thing on another forum a couple years back. They called it a gear reduction I think. Ive got a 2007 rk and it sure could use a little regearing . Could someone please post part#'s and supplier source or website . How do you think it will work with 103" . Are you still able to hit high speeds on highway and cruise in 6th gear?
pn# EV-3084 as seen HERE
