3.37 Gearing Just do it!
Road Master
Joined: May 2007
Posts: 938
Likes: 0
From: North Central Arkansas
I put the 3.37 gearing in the primary of my 06 yesterday and rode it today. What a major improvement. I always felt like I was either needed to up shift or down shift when running the normal speed limits or +5. Now it seems to be in the sweet spot. The 6th gear is even more usable as I am running about 2750 rpms at 70. Still not as much torque as my 89 but a big improvement over stock.
If you are on the fence about this upgrade come on over to the dark side.
If you are on the fence about this upgrade come on over to the dark side.
If not, how about a link to the seller?
What do you figure was the total cost?
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Road Master
Joined: May 2006
Posts: 1,229
Likes: 20
From: Greater St Louis, MO
https://www.zanottimotor.com/shopping/partLookUp.html
The only other cost was Primary Fluid and I reused the primary gasket.
Last edited by dougbk; Mar 8, 2009 at 09:39 AM. Reason: additional information
Extreme HDF Member
Joined: Apr 2006
Posts: 10,449
Likes: 46
From: Roswell, GA
EFI Touring Models used these parts for 3.37:1 primary gearing from '99-'01 with the MM EFI system. The gearing change will add about 400 rpm at 70 mph cruise for those of us with 5-speed transmissions and the stock 3.15:1 gearing.
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