Opel GT Forum banner
rocker arm
1-1 of 1 Results
  1. Opel Engine Performance Modifications
    Hello, I'd like to share some information about our OPEL CIH competition rocker arms. We have totally redesigned the CIH rocker arm system, with following highlights (indicated per intake / exhaust pair, in order of fitment): - 2 threaded studs which replace the original studs - 2 aluminum...
1-1 of 1 Results