My life savings in a tow and a belt, the really good news is great friends and alot of help saved me tons. I could not have done this without, Susan, Derek, Matt and some guy who did it in the UK and posted the pics. It is actually really easy after you completely disassemble the bike and have access to a half inch impact with good pressure to zap the 1 1/2 inch socket on the compensator sprocket nut. Even the bike has big nuts. Out side of an IFS this is the biggest socket I own.