JE's single piston for KTM 520 and 525 PRO models is an individual replacement intended for engine rebuilds and repairs on those KTM applications. Supplied one at a time, it provides a clear option for mechanics and owners to replace a worn or damaged piston with a part matched to the 520/525 PRO models referenced in the source.
JE Pistons KTM 520/525 PRO Piston Single