Mendeola main cases are cast from pure A-356 aircraft aluminum alloy, then heat treated to T-6 condition. Mendeola’s castings are poured from one of the west coast’s best foundries and are unmatched in quality, strength and beauty. The unique look of the Mendeola transaxle case is recognizable from far away as a sign of true racing heritage with the generous use of reinforcement ribs for rigidity and strength.