CJM Aluminum MMC Liner Sleeves with Nikasil (EJ20)

CJM Aluminum MMC W/ Nikasil Sleeves for EJ20

The same aluminum MMC + Nikasil technology used in top-tier motorsport— including Formula 1 and the World Rally Championship—now available for the EJ20.

CJM’s aluminum metal-matrix composite (MMC) liners offer a cutting-edge alternative to traditional ductile-iron sleeves, delivering significant reductions in weight and dramatic improvements in heat transfer—key advantages for competitive racing applications where every gram and every degree matter.

Constructed from an advanced aluminum MMC alloy and finished with a premium Nikasil coating, these liners provide exceptional wear resistance, superior thermal conductivity, and outstanding dimensional stability under extreme cylinder pressures. The reduced mass of the MMC liner helps minimize reciprocating and block-level stresses, contributing to quicker engine response, improved balance, and increased performance potential.

The Nikasil surface treatment forms an ultra-hard, low-friction bore finish that ensures rapid and complete piston-ring seating. This enhances combustion efficiency, reduces frictional losses, and delivers long-term durability even in high-boost, high-RPM environments.

Engineered for the most demanding motorsport conditions, CJM’s aluminum MMC Nikasil liners combine lightweight construction with superior heat dissipation and wear characteristics—offering a premier solution for racers seeking maximum efficiency, reliability, and competitive advantage.