Click to expand Tap to zoom PBI Cnc Transmission Sprocket. 21T for 52-E79 XL by PBI Currently unavailable £43.78 | / SKU MCS930000 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Currently unavailable DescriptionPBI CNC transmission sprocket. 21TDetailsCNC machined; 8620 alloy steel; Heat treated; Nickel plated; USA made; OEM 21t replacement (35205-52A)52-E79 XL