SLF Motion is more than Road and Tri company, we like to dirty too! Designed and machined to standout from the crowd, all ProConcept chainrings are CNC machined out of 7075-T6 Aluminum. DirectMount SRAM ProConcept chainrings are upwards of 15% lighter than stock offerings and are proven to be stronger.
||157TA Super Boost w/ 50mm Chainline
||148TA Boost w/ 52mm Chainline
||135QR / 142TA w/ 49mm Chainline