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ATS 8HP45/50/51 Transmission Build Service

Regular price $3,800.00

Transmission Type
Build Stage
Core Charge

All transmission builds include a core charge of $500, which can be refunded if you send in your transmission.

If additional options are wanted (T-Case/Torque Converter etc.), please leave them in your order notes so we can invoice for them afterwards.

8HP45/50/51 Builds and Products

The smallest body 8hp in its stock version is not capable of much, but after any of the ATS stage upgrades you will be ready to take on whatever may come your way. Whether you daily your car, or live at the track or drag strip we have a build for you.

Every unit is completely disassembled, cleaned, and inspected for any worn parts.

Below you will find a chart of the main components that comes in each build along with the clutch counts for each clutch pack.

  • Stage 0 (900whp/700wtq) $3,800

    This stage is designed for daily drivers or time attack-style vehicles that require a power-capable and reliable transmission, but don't need to launch aggressively or push the limits in second gear. It features upgraded and revised clutch packs, allowing you to maximize the potential of your build without the concern of reliability.

    Complete disassembly and cleaning

    Enhanced clutch fibers

    Enlarged clutch counts

    ATS steels and plates

    Seals and gaskets

    Pan/filter

    • Stage 1 (1000whp/800wtq) $5,300

      Ready for both the streets and the drag strip on the weekends, this stage is designed to handle aggressive launches and hard acceleration while maintaining smooth shifting and reliability. It's the ideal build for stock motor cars looking to push their limits without compromising performance.

      Complete disassembly and cleaning

      ATS billet E hub

      High performance C and E fibers

      Enhanced A, B, and D clutch fibers

      Enlarged clutch counts

      ATS steels and plates

      Seals and gaskets

      Pan/filter

      • Stage 2 (1200whp/1000wtq) $7,000

        Do you have a built motor and ready to push the limits of your setup, this stage has you covered. It maintains smooth, stock-like shifts while ensuring your transmission can handle nearly anything you throw at it.

        ATS billet E hub

        ATS billet C hub

        Modified C piston

        High performance C and E fibers

        High Performance D fibers

        Enhanced A and B clutch fibers

        Enlarged clutch counts

        ATS D clutch snap ring

        ATS steels and plates

        Seals and gaskets

        Pan/filter

        • Stage 3 (1300+whp/1100+wtq) $12,000

          The strongest build for the cars ready to try and set records but ensure your transmission is going to stay strong throughout the race season.

          Complete disassembly and cleaning

          ATS billet E hub

          ATS billet C hub

          ATS Billet D piston

          ATS Billet E piston

          ATS 300m C collar

          ATS Billet D Drum

          Modified performance p4 sun gear basket

          Modified performance p4 carrier basket

          Modified C piston

          ATS valve body upgrade

          High performance C and E fibers

          High Performance D fibers

          Enhanced A and B clutch fibers

          Enlarged clutch counts

          ATS D clutch snap ring

          ATS steels and plates

          Seals and gaskets

          Pan/filter

Additional Options:

ATS Billet Main Shaft - $1700

ATS Billet Performance Pump - $600

Billet High Stall Torque Converter - Stall speeds available from 2800 to 4400 - $1900

Transfer Case Build - $2300

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All ratings are wheel horsepower and wheel torque and are based off our testing. They are not guaranteed and will vary depending on abuse, lack of care, and maintenance. Stage 0 is meant for street car applications due to the fact it retains your stock cast E hub and can break during abrasive driving in 2nd gear.

Round trip shipping is $800 anywhere inside the continental US.

Transmission Application Guide:

8HP45

BMW 1 Series (F20)

BMW X1 (E84)

BMW 2 Series (F22) M235i

BMW 3 Series (F30)

BMW 4 Series (F32)

BMW 5 Series (F10/F11)               

BMW 6 Series (F06/F12/F13)

BMW 7 Series (F01/F02)

BMW X3 (F25)

8HP50

BMW 1 Series (F20) LCI

BMW X1 (E84)

BMW 2 Series (F22) M240i

BMW 3 Series (F30) LCI 

BMW 4 Series (F32) LCI

BMW 5 Series (F10//F11)

BMW 5 Series (G30/G31)

BMW 7 Series (G11/G12)

BMW X3 20D (G01)

BMW X3 30i (G01)

BMW X3 M40i (G01)      

BMW X4 20D (G02)

BMW X4 30i (G02)

BMW X4 M40i (G02)

BMW X7

BMW X4 (F26)

BMW X5 (E70) 35i

BMW X5 (F15)

BMW X6 (F16)

BMW Z4 (E89)

8HP51 Applications

BMW 2 Series (G42)

BMW 3 Series (G20)

BMW 4 Series (G22)       

BMW Z4 (G29)

BMW X3 M40i (G01)      

BMW X4 M40i (G02)