Overview Reviews Product Description Aluminum Forged Valve Stems for Street Anodized for corrosion protection Precision manufactured from lightweight aircraft aluminum 11.3MM, Black Product Videos Custom Field Product Reviews (No reviews yet) Write a Review Write a Review × BIKEMASTER Bikemaster Aluminum Forged Valve Stem 11.3MM, Black Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name *Email *Review Subject *Comments