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AIRCRAFT GRADE ALLOY, HARD ANODISED, UK MADE. FITS THE OHV SINGLES USING THE LARGER VALVE SPRINGS APPROXIMATELY 1958 AND BACK, WEIGHS 15GRAMS COMPARED TO THE STANDARD ITEM AT 41 GRAMS. PRICE IS EACH.
OUTSIDE DIAMETER: 1.540" (39.3MM)
SEE A2/149 FOR THE COLLETS. SEE A3/148 FOR THE SPRING SEAT. SEE V37 FOR THE VALVE AND 21612/3 FOR THE SPRINGS.
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