Sprockets > Bicycle Chain Sprockets > 4-Hole Freewheel Sprockets
4-Hole Freewheel Sprockets for Bicycle Chain
4-hole freewheel sprockets for #25 chain are used on most electric scooters, electric dirt bikes, electric mini bikes, electric pocket bikes, electric sport bikes, and electric go karts.
The 4-hole freewheel sprockets on this page are for 1/2"x1/8" (#410) bicycle chain and
may be used for modifying these types of vehicles to have a gear motor or
bicycle pedal cranks.
1/2" x 3/32" (#408) bicycle chain is used on multi-speed bicycles with front and/or rear derailleurs.
1/2"x1/8" (#410) bicycle chain is used on single-speed and 3-speed bicycles with internal hub gears, and also
used on electric bicycle gear motors which have a chain between the motor and a sprocket on the rear wheel.
1/2" x 3/32" (#408) and 1/2"x1/8" (#410) bicycle chain are available on our Chain Page.
Motors with sprockets that are compatible with the 4-hole
freewheel sprockets sold on this page
are available on our Motors with
1/2" x 1/8" (#410) Chain Sprockets Page.
4-Hole Freewheel Sprockets and Freewheels
All of the freewheel sprockets, freewheels, hardware, and tools
on this page are 100% compatible and interchangeable with each other.
Custom-Made Freewheel Sprockets with F4 Mounting Pattern
Important Information These are custom-made sprockets which are machined on an
individual order basis so please allow for extra processing time when ordering. Custom-made sprocket orders cannot be cancelled after machining has begun on the sprocket and returns are not accepted on custom-made sprockets.
Any size 4-hole freewheel sprocket for 1/2"x1/8" (#410) chain between 23 and 90 teeth can be custom-made so if you need a size that is not
listed below then please visit our custom-made sprockets page.
4-Hole Compatible 16 Tooth Freewheel with M35 x 1.00 Left Hand Threads
F4 sprocket mounting pattern. 4-hole compatible freewheel with M35x1.00 left hand threads. Freewheel has
16 teeth for 1/2"x1/8" (#410) chain and engages
in the counterclockwise directions. Works with 4-hole 2.125" ID chain sprockets
bolt circle diameter and four 0.244" ID bolt holes. M35x1.00 left hand threads are
most commonly used for the rear brake on electric scooters, electric dirt bikes, electric mini bikes, electric pocket bikes, electric sport bikes, and electric go karts
so this freewheel may be useful for modifications involving installing a chain
on the left hand side of the vehicle.
Item # FWM-160
Freewheel and Brake to Threaded Wheel Hub Spacer with 35mm ID
Freewheel and brake to threaded wheel hub spacer. Works with both M35x1.00 and 1.375"
x 24 TPI freewheels. 35mm ID, 42mm OD, 2.5mm thick. Made from yellow zinc plated steel.
Item # HDW-3525
Related Items: Bicycle Chain