Oregon Pro Spur Sprocket (.325" x 7 Tooth) for Solo 639, 644, 651, 651Sp
Oregon pro spur sprockets are durable, economical, and built to last. The chain-driving portion of the sprocket, and the clutch cup, are a single component and are all replaced together when a new spur sprocket is installed. The Pro Spur is made from quality heat treated steel and is popular for small professional chainsaws. Drive sprocket is .325" pitch with 7 teeth. Drive sprocket bearing not included.