4" $10—common for front/rear or class requirement 
6" $15—common PCA autocross sizing 
8" $20—common SCCA AX/PCA TT/HPDE sizing
 
Safe on paint, PPF, carbon fiber, fiberglass, and plastic — peels clean with no residue.
 
Prices change with size, but the deals are always race-ready.
 
* Sold as a pair for driver and passenger sides*
 
Buy more and save.
 
Three or more sets save 5%
Five or more sets save 10%
Ten or more sets save 20%