Description
King Racing Products billet aluminum restrictor plate for the 99-05 Yamaha R6, the workhorse engine of 600 micro sprint racing. Restrictor plates are how sanctioning bodies equalize the field, and running the correct one is not optional at a tech line.
Billet aluminum means it holds its dimensions and does not distort under heat cycling the way a cheaper plate can. That matters because tech officials measure these, and a plate that has crept out of spec fails inspection whether or not you knew about it.
Check your sanctioning body’s current rule before ordering – restrictor requirements vary between series and change between seasons, and a plate that was legal last year may not be this year. If you are not sure what your series requires, call us and we will help you figure it out before you buy the wrong one.




