Motorbike Chain Roller (3/8 inch ID) Tensioner Fit for 50cc 125cc Trail Dirt

Chain idler fits many 50cc 125cc Dirt Trail Bike, Quad, Mini Moto, ATV. 1 Piece Chain Roller Tensioner. Spring loaded tensioner automatically adjusting tension towards chain elongation. Heavy duty chain idler wheel with upgraded torsion spring.

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