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2020-2023 GM 2500 / 3500 Transmission

7 products
Regular price $1,373.96
Sale price $1,373.96
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The 10-Speed Allison found in your 2020-2023 L5P Duramax is known for its smooth shifts and great performance while towing. However, it still leaves a bit to be desired when it comes to shifting in...
Regular price $10,600.00
Sale price $10,600.00
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*Call for build times* “MUST KEEP FACTORY TRANS TUNING / NO TRANS TUNING ALLOWED” *Must use factory fluid / Dexron ULV* The new Allison 10L1000 shares NOTHING with its predecessor the Allison 1000....
Regular price $2,195.00
Sale price $2,195.00
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The Allison 10L1000 torque converter is a great design for a stock truck. However, adding more than 75hp will quickly overpower the stock clutch setup. Unfortunately, with the way this unit is made...
Regular price $4,795.00
Sale price $4,795.00
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Allison 1000 Stage 1 500hp Max   Raybestos C-3 and C-4 packs with additional clutch count Billet Torque Converter Modified lock up valve Transgo Trim Valves New bonded pistons New c-1 and c...
Regular price $6,995.00
Sale price $6,995.00
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Allison 1000 Stage 2 725 Hp max   Raybestos C-3 C-4 Torque kit custom machined pressure plates LML style pistons and return springs Raybestos C-1, C-2 Torque kit Ratio Tek pressure upgrades ...
Regular price $7,995.00
Sale price $7,995.00
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Allison 1000 Stage 3  900 Hp max   Raybestos C-3 C-4 Torque kit custom machined pressure plates LML style pistons and return springs Raybestos C-1, C-2 Torque kit Ratio Tek pressure upgrades ...