CORONA TECH-LINE VAMPIRE

VAMPIRE CROWN 219SL S 73 YS 76

ERGAL 7075 T6 MM4

VAMPIRE TRADEMARK REGISTERED PRODUCT

VAMPIRE is a chainring designed to reduce friction between the chain and the chainring.

During the “roller chain unlocking” it does not encounter the resistance that is normally found in traditional crowns due to the profile of the posterior tooth, made of ERGAL 7075 in both versions 219 and 215, the ultimate in lightness and quality of materials, it also has an innovative hard anodizing 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 non-stick properties.