TB Lightweight Primary Gear

TB Lightweight Primary Gear

Our Primary Gear replaces the OEM gear and removes close to 2lbs of weight.  This reduces the load and amount of rotating mass on the crankshaft which improves the throttle response.  Just swap out and your new Z125 will rev faster with this  affordable performance item!

OEM Primary Gear weight: 2 lb 6.2 oz

Our Primary Gear weight: 7.3 oz

TBparts.com is the only distributor of our products and the parts are shipped directly from the manufacturing facility to us. When a product is purchased from us, it has not gone through several middlemen and thus, the savings goes to the consumer. Additionally, to keep prices down, we use basic packaging and installation instructions are not included.  The end result is affordable and high quality performance parts that will add some power and excitement to your bike!