They have been developed with the largest bore possible, yet have a 3mm minimum wall thickness between each cylinder and 10mm to 12mm front and back where piston skirt loading is the highest.
Smaller bores are also available.
This new cylinder wall coating is far stronger than cast iron sleeves and is very similar to that found in many of the new OEM engines. CNC machined to precisely match the big bores and offer the best possible seal in these water-cooled motors. Gains of 25 to 35 Rear Wheel Horsepower are available in otherwise stock motors and 20 to 30 additional with headwork. Northwest 17th Terrace, Ft.