Shimano Sora R3030-CG 50T 110mm BCD 5 Bolt Chainring Guard and Fixing Bolts Add $17.49 current price $17.49 Shimano Sora R3030-CG 50T 110mm BCD 5 Bolt Chainring Guard and Fixing Bolts Shipping, arrivesin 3+ days Shimano 105 5703 10-Speed Chainring - Silver Tooth Count: 30 Chainring ...