The Renthal SR4 chainrings are legendary in their stiffness and longevity. The Ultralite chainring is 5mm thick for super-stiff, direct power transefer. Weight is reduced to the absolute by removing all unnecessary material, for the highest possible stiffness at the lowest possible weight. CNC machined from 7075 T6 aluminium , the hard anodised surface treatment massively increases the lifespan of the chainring. Renthal Ultralite BMX chainrings are designed to ride faster, jump further and last longer.
Computer aided Ultralite design enables the ultimate combination of strength and lightness
High strength 7075-T6 aluminum alloy provides excellent durability
Hard anodised surface coating for increased longevity
Precision CNC machined to extremely tight tolerances