Performance & Replacement Transmission & Drivetrain Parts

Building awesome horsepower is only part of the story. You need to deliver all that power to your car or truck’s wheels! We’ve got torque-hungry high performance automatic...

Building awesome horsepower is only part of the story. You need to deliver all that power to your car or truck’s wheels! We’ve got torque-hungry high performance automatic and manual transmissions for street and strip applications, torque converters and clutch sets, flexplates and flywheels, plus limited-slip differentials, spools, lockers, ring and pinion sets, driveshafts, U-joints, axles, bearings, C-clip eliminator kits, transfer cases, shift kits, and rebuild kits. We also have a wide selection of trans-brakes, shifters, cables, and accessories—everything you need to put the power to the ground, Summit style.

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Results 1 - 25 of 41

Pacific Performance Engineering Transmission Fluid Bypass Valves for 2013-2018 2500, 3500 - 225065000

Automatic Transmission Cooler Bypass Delete Kits, Natural, Aluminum, Coupler, Ram, Kit

Part Number: PPE-225065000

2.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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BD Diesel Transmission Cooler Bypass Valve Delete Kits 1061527

Automatic Transmission Cooler Bypass Valve Delete Kits, Aluminum, Includes Washers and Seals, 2019-20 Dodge/Ram, 6.7L, 68RFE/AS69RC, Kit

Part Number: BDD-1061527

Not Yet Reviewed

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BD Diesel Transmission Cooler Bypass Valve Delete Kits for 2013-2018 2500, 3500 - 1061528

Automatic Transmission Cooler Bypass Valve Delete Kits, Aluminum, Includes Washers and Seals, 2013-18 Dodge/Ram, 6.7L, 68RFE/AS69RC, Kit

Part Number: BDD-1061528

5.0 out of 5 stars ( 3 )

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TransGo Vacuum Bypass Kits VBP-VAC

Vacuum Bypass, Automatic Transmission Modulator Bypass Components, Kit

Part Number: TRG-VBP-VAC

4.13 out of 5 stars ( 8 )

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ATI Modulator Plug Hold-Down Clamps ATI970211

Modulator Plug Hold Down Clamp. Automatic Transmission, TH400, Each

Part Number: ATI-970211

4.67 out of 5 stars ( 3 )

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FTI Performance Billet Modulator Plugs F4051

Modulator Plug, Billet, TH400, Each

Part Number: FTI-F4051

5.0 out of 5 stars ( 2 )

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ICT Billet Modulator Delete Plugs 551907

ICT Billet Modulator Delete Plugs 551907

Modulator Delete Plug, GM, TH400, TH350, Billet Aluminum, Each

Part Number: ICB-551907

5.0 out of 5 stars ( 1 )

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Mishimoto Thermal Bypass Valve Kits for 2017-2021 F-150 - MMTC-RPTR-TBVFF

Automatic Transmission Cooler Bypass Delete Kits, Non-Thermostatic, Full-Flow, Aluminum, Anodized, Ford, 3.5L, Ecoboost, 10R80, Each

Part Number: MIO-S0087

Not Yet Reviewed

Estimated Ship Date: Apr 1, 2026 if ordered today

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Estimated Ship Date: Apr 1, 2026 if ordered today

BD Diesel Bypass Tube Eliminator Kits 1600036

Cooler Bypass Eliminator, Aluminum, Ford, Diesel, Kit

Part Number: BDD-1600036

5.0 out of 5 stars ( 3 )

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Sonnax Automatic Transmission Cooler Bypass Valve Kits 36605-02K

Transmission Cooler Bypass Delete Kit, Cooler Bypass Valve Kit, Steel, Black, includes T-Valve, Spring, Checkball, O-rings, Ford, 4R100, E4OD, Kit

Part Number: SOX-36605-02K

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Mishimoto Thermal Bypass Valve Kits for 2019-2024 2500, 3500 - MMTC-RAM2-TBVFF

Automatic Transmission Cooler Bypass Delete, Machined, Ram, 6.7L, Kit

Part Number: MIO-S2641

Not Yet Reviewed

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ATS Diesel Performance Cooler Bypass Delete Kits 310-005-2464

Automatic Transmission Cooler Bypass Delete Kits, Thermal Bypass Valve Up Grade, Aluminum, Coupler, Ram, Kit

Part Number: APF-3100052464

Not Yet Reviewed

Estimated Ship Date: Mar 30, 2026 if ordered today

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Estimated Ship Date: Mar 30, 2026 if ordered today

Mishimoto Thermal Bypass Valve Kits MMTC-RAM2-TBV

Automatic Transmission Cooler Bypass Delete, Black Anodized, Ram, 6.7L, Kit

Part Number: MIO-MMTCRAM2TBV

Not Yet Reviewed

Estimated Ship Date: Mar 31, 2026 if ordered today

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Estimated Ship Date: Mar 31, 2026 if ordered today

Pacific Performance Engineering EPC Blockers 128041119

Automatic Transmission Modular Plugs, Pacific Performance, EPC Blocker, for Allison 1000, Easy Installation, GMC, 2500HD, 3500HD, Savana, 6.6L, Each

Part Number: PPE-128041119

Not Yet Reviewed

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Mishimoto Thermal Bypass Valve Kits for 2012-2018 WRANGLER - MMTC-JK-TBV

Automatic Transmission Cooler Bypass Delete, Jeep, Thermal Bypass Valve, Kit

Part Number: MIO-MMTC-JK-TBV

Not Yet Reviewed

Estimated Ship Date: Apr 1, 2026 if ordered today

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Estimated Ship Date: Apr 1, 2026 if ordered today

ATI Modulator Plugs ATI407010

Modulator Plug, Aluminum, TH400

Part Number: ATI-407010

4.5 out of 5 stars ( 2 )

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Dorman Automatic Transmission Modulator Bypass Components 609-065

Transmission Module

Part Number: RNB-609-065

Not Yet Reviewed

Estimated Ship Date: Apr 6, 2026 if ordered today

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Estimated Ship Date: Apr 6, 2026 if ordered today

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Dorman Automatic Transmission Modulator Bypass Components 624-650

Trans Bypass Valve

Part Number: RNB-624-650

Not Yet Reviewed

Estimated Ship Date: Apr 7, 2026 if ordered today

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Estimated Ship Date: Apr 7, 2026 if ordered today

Sonnax Vacuum Modulator Plug Gaskets 3543L-5

SERVICE KIT POWERGLIDE 5/SET

Part Number: SOX-3543L-5

Not Yet Reviewed

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Sonnax Vacuum Modulator Plugs 28738-01K

Modulator Plug, GM, Powerglide, Kit

Part Number: SOX-28738-01K

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Dorman Automatic Transmission Cooler Bypass Delete Kits 724-652

Cooler Bypass Valve, Chrysler 2014-12, Dodge 2019-12, Jeep 2018-11, Ram 2020-12

Part Number: RNB-724-652

Not Yet Reviewed

Estimated Ship Date: Apr 7, 2026 if ordered today

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Estimated Ship Date: Apr 7, 2026 if ordered today

Dorman - Automatic Transmission Modulator Bypass Components for 2016-2018 2500, 4500 - 624-647

Trans Bypass Valve

Part Number: RNB-624-647

Not Yet Reviewed

Estimated Ship Date: Apr 7, 2026 if ordered today

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Estimated Ship Date: Apr 7, 2026 if ordered today

Dorman - Automatic Transmission Modulator Bypass Components for 2012-2015 5 - 609-066

Transmission Module

Part Number: RNB-609-066

Not Yet Reviewed

Estimated Ship Date: Apr 7, 2026 if ordered today

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Estimated Ship Date: Apr 7, 2026 if ordered today

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Dorman Transmission Control Modules for 2010-2011 3 - 609-068

Transmission Control Module, FS5A-EL, Mazda, Each

Part Number: RNB-609-068

Not Yet Reviewed

Estimated Ship Date: Apr 7, 2026 if ordered today

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Estimated Ship Date: Apr 7, 2026 if ordered today

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PPE Automatic Transmission Fluid Control Valves 319080000

Transmission Coolant Thermal Bypass Valve

Part Number: PPE-319080000

Not Yet Reviewed

Estimated Ship Date: Apr 10, 2026 if ordered today

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Estimated Ship Date: Apr 10, 2026 if ordered today

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