DESCRIPTION: ADA billet dome for Yamaha motors using 'flat top' pistons. Includes compression(OR043) and dome top(OR020) orings. Squish relief is .015" at 86mm with a 4 degree angle.
FITS THE FOLLOWING: Yamaha 1100/1200 - Yamaha 701 - Yamaha 760

Jet Ski head dome

PWC head

Personal watercraft domes
ada racing - Yamaha 86mm Flat Top

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