SRAM (Quarq) warrants its products to be free from defects in materials or workmanship for a period of two years after original purchase. This warranty only applies to the original owner and is not transferable. Claims under this warranty must be made through the retailer where the bicycle or component was purchased; in some cases you may contact Quarq directly. Original proof of purchase is required. For complete information please see the warranty policy (2MB, PDF) or your user manual.