Seller notes

TB Parts Kawasaki Z125 Lightened Primary Gear Item #TBW0858 TB Parts Primary Gear replaces the OEM gear and removes close to 2lbs of weight off of the crankshaft. This reduces the load and amount of rotating mass on the crankshaft which improves the throttle response. Just swap out and your Z125 will rev faster with this affordable performance item! We also have this listed with a side cover gasket for the complete install package! OEM Primary Gear weight: 2 lb 6.2 oz TB Parts Primary Gear weigh...

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