- -50%
 
                                                                                                   
                                                                    
                            
                                                                                                   
                                                                    
                            Sram Red 12s Chainrings Expo: are made from a single block of aluminium, improving rigidity, durability and precision in the gearboxes
Sram Red 12s Chainrings Expo: are designed for high-end racing bike transmissions, offering technological innovations that improve performance and efficiency.