120 Tooth Sprocket for #25 Chain with F4 Mounting Pattern Made from Tempered (Hardened) Aircraft Grade Aluminum Alloy120 TeethFor #25 ChainF4 Mounting Pattern54.1mm BoreFour 6.2mm ID Bolt Holes @ 90 degrees65mm Bolt Circle Diameter
65 Tooth Sprocket for #428 Chain Made from Aircraft-Grade Tempered (Hardened) Aluminum Alloy For #428 Chain 65 Teeth F5 Mounting Pattern10.7" OD 2.125" ID 2.638" Bolt Circle Diameter Five 5.25mm ID Bolt Holes
25 Tooth Sprocket for #415 Chain with F5 Mounting Pattern Made from Aircraft-Grade Tempered (Hardened) Aluminum Alloy For #415 Chain 25 Teeth F5 Mounting Pattern 4.25" OD 2.13" ID 2.6378" Bolt Circle Diameter Five 5.25mm ID Mounting Holes
70 Tooth Sprocket for #428 Chain Made from Aircraft-Grade Tempered (Hardened) Aluminum Alloy For #428 Chain 70 Teeth F5 Mounting Pattern11.4" OD 2.125" ID 2.638" Bolt Circle Diameter Five 5.25mm ID Bolt Holes
58 Tooth Sprocket for 1/2" x 1/8" Bicycle Chain (G1) 58 tooth sprocket for 1/2" x 1/8" (#410) bicycle chain. 9.5" OD2" ID2.875" bolt circle diameter. Four 3/8" ID bolt holes. Made of aircraft-grade tempered (hardened) aluminum alloy.
45 Tooth Sprocket for #428 Chain Made from Aircraft-Grade Tempered (Hardened) Aluminum Alloy For #428 Chain 45 Teeth F4 Mounting Pattern 54.1mm ID 65mm Bolt Circle Diameter Four 6.2mm ID Bolt Holes
80 Tooth Sprocket for #35 Chain with Custom Mounting Pattern Made from Aircraft-Grade Tempered (Hardened) Aluminum AlloyFor #35 Chain80 TeethCustom Mounting Pattern1.64" ID BoreFour 0.369" ID Bolt Holes Equally Spaced @ 90 Degress3" Bolt Circle Diameter
52 Tooth Sprocket for #35 Chain with G1 Mounting Pattern Made from Tempered (Hardened) Aircraft Grade Aluminum Alloy52 TeethFor #35 ChainG1 Mounting Pattern2" BoreFour 3/8" (0.375") ID Bolt Holes Equally Spaced @ 90 Degrees2.875" Bolt Circle Diameter
36 Tooth Sprocket for #25 Chain with R32 Mounting Pattern Made from Aircraft Grade Tempered (Hardened) Aluminum For #25 Chain 36 Teeth R32 Mounting Pattern 26.1mm ID Three 5.5mm ID Bolt Holes 39mm Bolt Circle Diameter
42 Tooth Sprocket for #410 (1/2" x 1/8") Bicycle Chain with F4 Mounting Pattern Made from Tempered (Hardened) Aircraft Grade Aluminum Alloy F4 Mounting Pattern 42 Teeth For 1/2"x1/8" (#410) Bicycle Chain 54.1mm ID Bore Four 6.2mm ID Bolt Holes @ 90 Degrees 65mm Bolt Circle Diameter
22 Tooth Sprocket for #415 Chain with F5 Mounting Pattern Made from Aircraft-Grade Tempered (Hardened) Aluminum Alloy For #415 Chain 22 Teeth F5 Mounting Pattern 2.13" ID 2.6378" Bolt Circle Diameter Five 5.25mm ID Mounting Holes
42 Tooth Sprocket for #41 and #420 Chain Made from Aircraft-Grade Tempered (Hardened) Aluminum Alloy For #41 and #420 Chain 42 Teeth G1 Mounting Pattern 2" ID 2.875" Bolt Circle Diameter Four 3/8" ID Bolt Holes