Big bore cylinders, swingarms (round carrier) stock and extended lengths - link and no link, a arms +2 & long travel, more rim selections - hypers and other bead locks front and rear. Aftermarket clutch baskets. Better chain sliders for the swingarm (ones made for aftermaeket swingarms)

Now I know most of this stuff was produced in the past but it is not made anymore, making finding these items near impossible.