The Rennen Threaded Decimal 4-Bolt Chainring is a ...
lightweight, precision-machined race chainring designed for riders who demand maximum drivetrain efficiency and durability. Constructed from high-quality aluminum and featuring Rennen’s threaded mounting system, this eliminates the need for traditional chainring ...
machined from 6061-T6 aluminum with a rounded tooth profile to reduce chain wear. It features an anodized finish with laser-etch engraving and fits 104 BCD four-bolt cranks.