Ok guys, before we "sold" on the rotor, I forgot to mention something. I believe this rotor is the narrow-band style; needs to be used with a smaller-style (like most aftermarket) caliper/pads. I don't think it'll work right with a stock HD caliper. Don't want to sell you something you can't use!


JPS: works just like the cush-drive built into stock CB rear wheels- it just uses rubbers to cushion the sprocket-shock in hard launches and shifts.. Also just kinda cuts down a bit of driveline stress too. Drag racers use 'em to keep from breaking chains (and breaking cases!). This is a Performance Machine version to give a cush-drive to a harley/hd-style rear wheel (most-unlike most jap-bikes-don't have any factory-cush drive). It also "outboards" and upgrades (bigger) the bearing on the drive-side) for strength.
Fitment is where this thing gets a bit tricky. It came off a pm 200mm-tire-wheel (don't know actual rim-width but it had a 200 tire on it-prob 6" if I was guessing). The hub-side mounting bolt pattern is standard 5 bolt harley (same bolt pattern as the above chrome sprocket); the sprocket side takes 6-bolt kaw-sprockets. Your wheels' hub would have to be pretty narrow for this thing to work- I know it will work on PM mag-wheels; I think it'll work on other aftermarket wheels. I'm not real sure about stock hd wheels. It's 4" from the hub-flange-flat to the sprocket-backside. There is a little room for machining on it (narrowing it) but not alot- maybe a safe half inch.

Price? Hell I don't know. Seriously- thinking as I'm typing. I'm not trying to get rich off it- I could prob. do well on it if I was plugged into the right drag racing crowd- but I'm not; no idea what it'd bring on ebay- never seen one there/ none come up on "completed items". It is a really trick little piece though- my buddy I got it from (who had it on his drag bike) says they really make for a smoother/less "shocking" (more controlled in hammer-down accelerations) ride.

If you can even use it- $75 shipped? Includes a good Renthal aluminum 530 sprocket.

Last Edited By: Chalfa1980 12/06/08 8:22 PM. Edited 1 times.