415H Roller Chain Idler Sprocket Tensioner Sprocket 49cc 80cc Motorized Bicycle

415H Roller Chain Idler Sprocket Tensioner Sprocket 49cc 80cc Motorized Bicycle
High quality 415H chain idler sprocket for motorized bicycles / bikes 49cc 60cc 66cc 80cc
This is a free wheeling sprocket used to tension or route the chain in certain way.
13 tooth with 1/2” bore ID.
Fits chains with specs below.
Pitch : 1/2”
Roller diameter .306
Pin diameter .156
Size on inside 3/16′