Description
VAMPIRE CROWN 219SL Z 74
ERGAL 7075 T6 MM4
REGISTERED VAMPIRE BRAND PRODUCT
WITH PATENT EU6898-125-XXX
VAMPIRE is a sprocket designed to reduce friction between chain and sprocket.
During the ‘roller-chain disengagement’ it does not encounter the resistance normally found in traditional chainrings due to the profile of the subsequent tooth, made of ERGAL 7075 in both the 219 and 215 versions, the ultimate in lightness and quality materials, it also has an innovative hard anodising process OX-W ISO 10074, MIL-A 8625 type III, which improves corrosion resistance, lowers final roughness, increases hardness and smoothness through a nanometric layer of titanium oxide on the surface with anti-seize properties.
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