Softail Rear Pulley on Sportster?

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Aug 23, 2017 | 10:40 AM

#11

lewk

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From: Northern Los Angeles area.

Quote:

Originally Posted by 6 gun

... I have an 07 RKC and it came with a 66 tooth pulley, and I wanted more bottom end. i put a 2007 68 tooth Sportster pulley on my RKC and that is how I know about the changes...

Does this mean the 07 RKC pulley can be used on an 07 sportster to gain more top end?

Aug 23, 2017 | 10:43 AM

#12

6 gun

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From: Central Texas

Yes it does, but you will have to change out the mounting bolts I think you will need either longer or shorter, I cant remember it was a couple or three years ago.

Last edited by 6 gun; Aug 23, 2017 at 10:50 AM.

Aug 23, 2017 | 11:32 AM

#13

devilsbike

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From: Texas

awesome info 6 gun! thanks

Aug 23, 2017 | 12:43 PM

#14

6 gun

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From: Central Texas

Quote:

Originally Posted by devilsbike

awesome info 6 gun! thanks

No Problem I like to help when and where I can.

Last edited by 6 gun; Aug 23, 2017 at 12:51 PM.

Aug 23, 2017 | 12:51 PM

#15

lewk

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Quote:

Originally Posted by 6 gun

Yes it does...

And I see that the 07 RKC's rear sprocket comes in 2 versions. the 66T, and the 64T for japanese models. Hehehe... great choices for increasing top end.

Aug 23, 2017 | 12:54 PM

#16

6 gun

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From: Central Texas

Quote:

Originally Posted by lewk

And I see that the 07 RKC's rear sprocket comes in 2 versions. the 66T, and the 64T for japanese models. Hehehe... great choices for increasing top end.

yeah but the Jap model may have those rubber things in them to where the pully does not bolt directly to the wheel Check it out real good before you order.

Aug 23, 2017 | 01:00 PM

#17

lewk

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From: Northern Los Angeles area.

Quote:

Originally Posted by 6 gun

yeah but the Jap model may have those rubber things in them to where the pully does not bolt directly to the wheel Check it out real good before you order.

Will do, thanx for the heads up. I'm just planning ahead for when I upgrade to 1275cc. Then I'll be ready for the RKC sprocket. Since MoCo screwed up the softail line, I feel like it's worth making my sportster more tour-capable. At least for now.

Aug 23, 2017 | 01:21 PM

#18

TStephen

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From: SC

Quote:

Originally Posted by 6 gun

By adding two teeth to your rear pulley you will give yourself more low end torque but less top end speed. As far as speedometer your speedometer will show you running 5 miles faster than you are really going. I have an 07 RKC and it came with a 66 tooth pulley, and I wanted more bottom end. i put a 2007 68 tooth Sportster pulley on my RKC and that is how I know about the changes. FWIW, I used my stock belt, but I had to put the belt on the pulley before I put the axle in.

Not picking a fight here, but a larger pulley in the rear will increase low-end torque and lower top speed.

Think about that 10 speed bike again.

When we raced BMX back in the day, the smaller front sprocket guys always got the hole-shot on the gate drop, we could usually catch up, but that crucial quick start got them out in front at the beginning.