Vintage Bullet Bros chain tensioner. Blue anodized CNC aluminum. Attaches to rear derailleur cage to prevent chain suck/slap. Rare 90s, made in USA.

Vintage pre owned condition. Some scratches and minor wear as pictured. Comes with the original "cross country" spring, not the heavier duty "downhill" spring. Spring has some oxidation as pictured, still works well.

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