6L80E / 6L90E 1-2-3-4 Piston, Sonnax #104984-01 Replaces GM #24238700

GM 6L80/6L90 1-2-3-4 pistons commonly crack due to cantilevered stress on the cast material. The OE part has been through several revisions in an attempt to correct this, but all OE versions are still chronically known to crack. Sonnax 1-2-3-4 piston 104984-01 is made from stronger, billet aluminum and has superior design refinements that add additional strength […]


C6 Transmission: Level 4. Upgraded Red Clutches, Wide Black Band, Drums, Input Shaft, Low Drag / Wide Ratio gears, 9 1/2″ Converter, Cast Pan and Lever.

” Mega Dominator “ The Level 4 C-6 transmission comes with a high performance Fairbanks TransAction Kit, 2 Red Eagle Power Packs clutch sets in the forward and direct drums, Raybestos Black Carbon Fiber oversize Power Band and a Superior “R” billet Super Servo. The Superior C6 R Super Servo delivers positive 1-2 and 2-3 shifts. Also included is a Billet input […]


Sonnax Sure Cure kit #SC-4L60 for GM 4L60 (700R4) units

Sonnax Sure Cure kit SC-4L60 for GM 4L60 (700R4) units is a comprehensive reconditioning package featuring the best Sonnax products developed to help rebuilders restore and enhance transmission performance. Sure Cure components are the same Sonnax parts sold individually to resolve common valve body complaints as well as other transmission problems. The high-quality Sonnax parts […]

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