Small bore and Sport Compact engines with higher cylinder pressure require better sealing power than most other applications.

Our CPN ring sets are designed to meet those high demands.

Compatible with today’s new cylinder materials, such as Nikasil, these high strength, low tension ring sets offer optimum sealing with minimum drag.

Each set consists of a gas nitrided steel 1.0mm top ring, a Taper hook groove (THG) Napier style 1.2mm second ring with a low tension 2.8mm flex vent oil ring. 2.0mm rings are available in the PDN2 ring sets.