JW12 5 Port .12 Complete Coupling (rebuild kit) Gears Molded from top quality material

Molded from top quality material to provide supreme durability and reliability

lower right/ arm insert (assembled with hollow ball)

1:6th Scale vehicles weighing up to 25 lbs

If you're not sure: Choose the No

Designed to fit most 1/10 drag cars and short course trucks

JW12 5 Port .12 Complete Coupling (rebuild kit) Gears Molded from top quality materialThis is a complete coupling for the JW12 5 Port . 12 nitro engine. A complete coupling is a matched set that includes a fully assembled piston, sleeve, connecting rod, combustion chamber, head shim, and under head o ring. If your engine needs to be rebuilt, this is the ticket! This coupling is only for the 3 Port engine. It is not compatible with the 3 Port engine.