System Tech Racing - Oil Drain Plug for ALL KTM 250-525cc RFS EnginesThe stock KTM oil drain bolt uses an 8mm allen wrench which is notorious for stripping out and removal can be very difficult as the stock drain bolt will tend to seize up inside the cases or even crack as illustrated in the above image. The Solution? System Tech Racing offers a replacement oil drain bolt for all KTM 250cc 525cc RFS Motors. This trick little piece comes with an O ring and is machined from 300 Series Stainless Steel to ensure strength