Features:
Greatly reduces engine noise
Includes instructions for performance adjustments
Brand new Current Production item

Application:
Most Cox .049 & .051 Engines
Babe Bee
Black Widow
Golden Bee
Medallion
Tee Dee ( see note)

For Tee Dee use the needle valve assembly must be rotated 180 degrees, the NV spring (ratchet) relocated to the top and a venturi spacer must be used.