RENTHAL SPROCKET R 520 43T HA 397U-520-43P-HA

Their advanced tooth profile, concentricity and accuracy of fit provide maximum power transfer and long-life, Renthal's combination of a high strength base material and exceptionally hardwearing surface result in significantly increased chainwheel life over other brands, For Models with:, BST Carbon wheels 76x100 pitch circle diameter, Marchesini wheels 76x100 pitch circle diameter, OZ Racing wheels 76x100 pitch circle diameter