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Sprung chain tensioner for Extention frames, as found on Vary and Alter models but will fit all Extention sprung tensioner mounts.
- CNC milled arm out of billet 7075-T6 aluminium
- CNC machined jockey wheels with machine bearings, 8T
- As found on Extention Vary and Alter bikes
- Further improved stability and tension
- Anodized in black
- Strong steel spring with adjustable preload offers more linear tension throughout arm movement
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