
VERTEX Cast Piston - Manufacturer Ref. 22442B
Replacement piston from VERTEX, made of cast aluminum for motocross applications. Designed as a workshop part for the restoration or maintenance of 250 KTM models from 1990-1994, this oversize B piston offers a fit intended for an enlarged bore and adheres to the dimensions specified by the manufacturer.
Compatible with several 250 cc KTM models: KTM 250 SX (1994), KTM 250 MX (1992), and KTM 250 MX (1991). Always check the reference and dimensions before installation to confirm compatibility with your machine's cylinder and crankshaft.
Practical tips: install with appropriate rings and gasket, check clearances and bore tolerances, and follow manufacturer recommendations during the break-in period. A simple and robust part for reassembling a motocross top-end, ideal for routine maintenance preparations.