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 ...
bolts help bedazzle the look of your race bike, while the lightweight alloy helps reduce rotating weight on your bike. The perfect length to work with both todays slightly thicker 4 bolt ...
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.
The Rennen Pentacle Decimal chainring is CNC machined ...
in the USA from aircraft grade 7075-T6 aluminum featuring built-in chainring bolt nuts for easy installation and Rennen's decimal gearing system that allows you to dial in your gear ratio by fractions ...