Bonamici Chain Adjusters are CNC'd out of lightweight aluminum. Everything Bonamici designs is with racing and ease-of-use in mind. Their chain adjusters fall nothing short of this mantra. with a simple turn of the hex bolt, you can move your axle back and forth to the desired chain tension. With a ball bearing detent, adjustments are easily made and locked in place every 1/4 turn.
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NOTE: exact shape of each chain adjuster may differ from bike to bike to account for swing arm design and axel flange shape/side of insertion,
