YAMAHA R1 AND R1M BONAMICI CHAIN ADJUSTERS
FOR ALL MODELS FROM 2015 TO 2019
CNC MACHINED FROM BILLET ERGAL
BONAMICI CHAIN ADJUSTERS ARE NOT JUST ROBUST BUT ARE ALSO STUNNING IN DESIGN AND FUNCTION
BEARINGS MEAN THERE IS ALMOST ZERO FRICTION IN THESE CHAIN TENSIONERS
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