The GasGas Pampera 250/280 has a longer kickstarter which is steel instead of aluminum. It works great, and is very sturdy. It also won't wear at the pivot like an aluminum starter will do.
A dealer local to you, GoFasters, or
www.trialspartsusa.com should be able to get you one.
Stockers Starters can get you the starter body o-rings.
Good Riding and Wrenching!
Jim