Fix Bike Rear Derailleur That Won't Shift Into Highest Gear/Small Cog

I show the steps how to diagnose and repair a rear derailleur that wont shift to the high gears/small cogs.

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• #howto_style
• #bikes
• #derailleur_gears_product_category
• #sprocket_product_category
• #gear_product_category
• #bicycle_product_category