I think they're 'on sale' right now, too!
You'll need a new knuckle. Don't mess with the old one, cuz it will just hose your new lever.
The lever comes w/o o-rings. It is a VERY tight fit WITH o-rings. Be prepared to swear at it some when you try to make'm fit.
Your detent spring is likely no good. Either get a new one'a those or (better yet) buy a suitable compression spring from a hardware store. The oem spring is junk. Probably a new circlip, too. The old one doesn't keep its tension real good. Consider it like a wristpin clip.
**Note**
There is a note that accompanies (usually) the FRP lever that has CRITICAL information on its install. Of particular note is that a worn footpeg can allow the kicker to contact the RH engine cover when the lever is fully extended. Failure to resolve this interference will likely lead to extensive damage to the cover. Make sure you have clearance at that point!
There are a couple of other notes that are important, but no big deal.
It takes awhile to get used to the different arc and length.
You'll be happy with it! It will last a whole lot longer'n the oem potmetal goober (don'tcha like those technical terms? ;) ).
**Grease it good when you put it together. Lubrication in this area will keep you from attacking it at some point with a cutoff airtool cuz the bugger WON'T come off!!
.....how would I know anything about that........??
Cheers!
BTW...before I bought my FRP lever, I 'fixed' the oem unit at least three times. Various grinding, welding, drilling and pinning (AND cussing!). At about $.05/hr, I prolly bought 2-3 FRP levers in the process !!