The hardknock was introduced for sale to the public in ...

Motorcycles Motorcycle applications are easy for all road bikes. 80 - 120 mm tire width 1 oz 130 mm - 240 mm width 2 oz 260 mm - 360mm tire width 3 oz Note: Filtered valve cores NOT required for motorcycles. Simply check/add air when valve stem is on the bottom of the tire. ( 6:00 position approx.) Seal your gas tank: ................
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