Inlet ports are raised and are 42mm x 33mm exhausts ports are 31mm wide x 29 high Titanium valve spring retainers Titanium valves fitted with rotomaster caps on the stem ends. stock ratio inlet rocker arms and 1.52 nismo exhaust rocker arms
These rods are 166 grams lighter than stock conrod weight. Cap has 2 dowel joint. Cap runs 0.007" crush on bearings. Groove on either side of big end has hot metal sprayed sintered material for oil retention at high rpm