The Sram Red OG (OpenGlide) is the key to smooth performance in competition and on the open road. To take full advantage of the power and promise of the Sram Rival 10 speed groupset, you need a cassette and chain that are up to the task. With the Sram Red OG Cassette's semi-spidered design, Sram have removed specific sections of material from the small cogs, creating a cogset that shifts efficiently and positively in all situations. OpenGlide technology allows for the smoother transition between gears when up and downshifting. Semi-spidered design is light, strong and efficient. Features Lightweight: Innovative CNC‘d chromoly steel construction. Durable: 35% harder than titanium!....
Best Price: £99.00 from Merlin Cycles