A1 Transmission Stage 1 4R100/E4OD

4R100/E4OD

Stage 1 “Bulletproof”

• GPZ clutches/steels with maching for extra clutches
• Fully splined FWD drum
• New roller clutches and upgraded sprags
• New OE solenoid pack
• Updated bushings
• New molded pistons
• New gaskets, seals and o-rings
• Custom pump hydraulic modifications
• Custom accumulator body
• All weak problem prone areas addressed and fixed
• Machined center support
• OD piston spiral lock
• One piece case bushing
• New updated center support bearing
• New speed sensors
• Cooler bypass delete kit
• TCC apply converted to non PWM style
• New 4x4 pan and filter
• Output shaft endplay shimmed
• All cases meticulously inspected, cleaned, bead blasted, and painted
• All surfaces trued for flatness
• Billet cover triple disc dampened torque converter with Allison bearings
• Stage 1 “bulletproof” is suitable for approx. 600HP
• Retail pricing $4000 with exchange plus shipping
• Core fee $1000 (Cores must be returned within 30 days)
• 3 year unlimited mile warranty against build defects and workmanship  (no warranty on billet parts)

Cores must be returned to A1 Transmission

4722 Atlanta Hwy

Flowery Branch, GA 30542