red groupset

SRAM Red 5-piece Component Upgrade - By Twain Mein Double Tap brake/shift levers Front and rear derailleurs SRAM PC-1090R chain SRAM Red cassette (11-26) Actual Cost - $1236 This is a review of the SRAM Red 5-piece upgrade. I've been sticking with Shimano 9-speed Dura Ace because I have 4...