48 Tooth Sprocket for #35 Chain with F4 Mounting Pattern Made from Tempered (Hardened) Aircraft Grade Aluminum Alloy48 TeethFor #35 ChainF4 Mounting Pattern54.1mm BoreFour 6.2mm ID Bolt Holes @ 90 degrees65mm Bolt Circle Diameter
50 Tooth Sprocket for #25 Chain with F4 Mounting Pattern Made from Aircraft Grade Tempered (Hardened) AluminumF4 4-Hole Freewheel Mounting PatternFor #25 Chain50 Teeth4.1" OD54.1mm IDFour 6.2mm ID Bolt Holes Equally Spaced @ 90 Degrees65mm Bolt Circle Diameter
50 Tooth Sprocket for #35 Chain with F4 Mounting Pattern Made from Tempered (Hardened) Aircraft Grade Aluminum Alloy50 TeethFor #35 ChainF4 Mounting Pattern54.1mm BoreFour 6.2mm ID Bolt Holes Equally Spaced @ 90 Degrees65mm Bolt Circle Diameter
54 Tooth Sprocket for T8F (8mm) Chain with ISO Mounting Pattern Made from Tempered (Hardened) Aircraft Grade Aluminum Alloy54 TeethFor T8F ChainISO Disc Brake Rotor Mounting Pattern44mm Bolt Circle Diameter35.5mm BoreSix 5.5mm ID Bolt Holes Equally Spaced @ 60 Degrees
55 Tooth Sprocket for #35 Chain with F4 Mounting Pattern Made from Tempered (Hardened) Aircraft Grade Aluminum Alloy55 TeethFor #35 ChainF4 Mounting Pattern54.1mm BoreFour 6.2mm ID Bolt Holes @ 90 degrees65mm Bolt Circle Diameter
56 Tooth Sprocket for #25 Chain with F4 Mounting Pattern Made from Aircraft Grade Tempered (Hardened) AluminumF4 4-Hole Freewheel Mounting PatternFor #25 Chain56 Teeth54.1mm IDFour 6.2mm ID Bolt Holes Equally Spaced @ 90 Degrees65mm Bolt Circle Diameter
56 Tooth 4-Hole Freewheel Sprocket for #35 Chain Made from Aircraft-Grade Tempered (Hardened) Aluminum AlloyFor #35 Chain56 TeethF4 Mounting Pattern2.13" (54.1mm) IDFour 6.2mm ID Bolt Holes2.559" (65mm) Bolt Circle Diameter
60 Tooth Sprocket for #35 Chain with F4 Mounting Pattern Made from Tempered (Hardened) Aircraft Grade Aluminum Alloy60 TeethFor #35 ChainF4 Mounting Pattern54.1mm BoreFour 6.2mm ID Bolt Holes Equally Spaced @ 90 Degrees65mm Bolt Circle Diameter
60 Tooth Sprocket for #41 and #420 Chain with F4 Mounting Pattern Made from Tempered (Hardened) Aircraft Grade Aluminum Alloy F4 Mounting Pattern 60 Teeth For #41 and #420 Chain 54.1mm ID Bore Four 6.2mm ID Bolt Holes Equally Spaced @ 90 Degrees 65mm Bolt Circle Diameter
61 Tooth Sprocket for #35 Chain with F4 Mounting Pattern Made from Tempered (Hardened) Aircraft Grade Aluminum Alloy61 TeethFor #35 ChainF4 Mounting Pattern54.1mm BoreFour 6.2mm ID Bolt Holes Equally Spaced @ 90 Degrees65mm Bolt Circle Diameter
64 Tooth Sprocket for #25 Chain with ISO Mounting Pattern Made from Tempered (Hardened) Aircraft Grade Aluminum Alloy64 TeethFor #25 ChainISO Disc Brake Rotor Mounting Pattern35.5mm BoreSix 5.5mm ID Bolt Holes @ 60 degrees44mm Bolt Circle Diameter
65 Tooth Sprocket for #25 Chain with F5 Mounting Pattern Made from Tempered (Hardened) Aircraft Grade Aluminum Alloy F5 Mounting Pattern 65 Teeth For #25 Chain 54.1mm (2.13") ID Five 5.25mm (0.2067") ID Bolt Holes 67mm (2.6378") Bolt Circle Diameter