Reduced teeth rear spindle
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Stage III
Joined: Jul 2025
Posts: 3
Likes: 1
From: Edinburg texas
Reduced teeth rear spindle
I have a 08 fxd super glide and was wanting to lower my rear spindle tooth size for a better top end but can't seem to find one can anyone suggest anything? Thanks in advance.
Stellar HDF Member
Joined: Feb 2013
Posts: 3,072
Likes: 1,727
From: Dallas, Texas
When ya ask for Technical Assistance for your bike, it's a good idea to identify the part in question. I looked up in the Parts Manual for a SPINDLE. Funny, Harley does not list ANY spindles. LMAO
Grand HDF Member
Joined: Jul 2007
Posts: 3,736
Likes: 8,516
From: Bates County MO
Stock on that unit is a 32 tooth front pulley, 66 tooth rear pulley, and a 131 tooth belt. You can get a larger front pulley from Andrews (33 or 34 tooth) and an international pulley (Japan bikes of that vintage came with a 64 tooth pulley & a 130 tooth belt). If you go up one on the front, and down 2 on the rear, the stock belt may be adequate, you may have to replace the belt due to limited adjustment.
A cheaper alternative may be to convert to chain...
A cheaper alternative may be to convert to chain...
Thread Starter
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Stage III
Joined: Jul 2025
Posts: 3
Likes: 1
From: Edinburg texas
Reduced teeth rear "pulley"
Thanks for the info rigidthumper, I have looked into the chain conversion and really want to try it but all the tech's at work are totally against it. I'm just gonna do the conversion and be done with it. Just want more top end speed.
Seasoned HDF Member
Joined: Jul 2008
Posts: 9,281
Likes: 1,139
From: southeast PA
I have doubts that changing your final drive ratio for higher top speed will work. With a stock motor I don't think it will pull to redline in sixth gear. Are you planning on doing some motor mods to increase power?
Thread Starter
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Stage III
Joined: Jul 2025
Posts: 3
Likes: 1
From: Edinburg texas
Rear pulley
I have parts for an upgraded intake and exhaust. And wouldn't need much performance upgrades to have less strain on the bike in top gear. I've done the smaller rear sprocket or pulley on my last 5 bikes without performance upgrades and have gotten all but 1 to max out. It does take some time to get the bike their but it happens.
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