R & D’s Pro-Series heads reliably increase engine compression and power. Combustion chambers are precision-machined providing exact chamber volume. Watertight volume is increased for improved cooling. Head gasket is replaced with more reliable high-temp o-rings. Head Body features a one-piece design..
R & D’s Pro-Series heads reliably increase engine compression and power. Combustion chambers are precision-machined providing exact chamber volume. Watertight volume is increased for improved cooling. Head gasket is replaced with more reliable high-temp o-rings. Head Body features a one-piece design..
R&D cylinder heads reliably increase engine compression and power. Combustion chambers are precision-machined providing exact chamber volume. Watertight volume is increased for improved cooling. Head Body features a one-piece design with fixed domes. ..
This handy tool provides easy removal and installation of valve stem seals on Yamaha 1.8L engines. Allows seal installation during fitting of valve train upgrade kit without removing cylinder head. Key Features: Prevents seal distortion & gouging. Precision machined from 6061 aluminum & anodized. ..