Performance & Replacement Transmission & Drivetrain Parts

Automatic Shifter, 4L60E, 12 in. Single Bend Chrome Stick, Original Brushed Mushroom Knob, Each

Part Number: LOK-FM4L60ECM

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/22/2025

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Flywheels, OE Replacement, Cast Iron, 168-tooth, 30 lbs., External Engine Balance, Chevy, Big Block, Each

Part Number: SUM-700096

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Monday 12/22/2025

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Axle Assembly, 67-70 Ford Mustang, Rear, Centurion 9-inch, 31-Spline, 5 x 4.5 in. Bolt Pattern, Housing & Axle Kit

Part Number: CUR-CE-FDM6770X

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/22/2025

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Torque Converter, Saturday Night Special, Chevy, TH350, TH400, 12 in. Diameter, Each

Part Number: TCI-241500-A

3.18 out of 5 stars ( 17 )

Estimated Ship Date: Monday 12/22/2025

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Transmission Pan, Deep, Aluminum, Natural, Finned, Summit Logo, TH250, TH350, Each

Part Number: SME-1000

4.49 out of 5 stars ( 51 )

Estimated Ship Date: Monday 12/22/2025

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Dura Grip Positraction Carrier, Traction-Loc, GM 7.5/7.6 in., 28 Spline, 3.23 Up Ratio, Each

Part Number: YGA-26018

4.2 out of 5 stars ( 5 )

Estimated Ship Date: Monday 12/22/2025

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Bellhousing, External Hydraulic Upgrade, Release Bearing and Lever, Slave Cylinder, Bearing Retainer, Hardware, Jeep, AX15, Kit

Part Number: ADD-712590-IR

3.6 out of 5 stars ( 5 )

Estimated Ship Date: Monday 12/22/2025

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Differential Carrier, Detroit Truetrac, GM 9.5/9.76 in., 33-spline Axle Shaft, Designed for 3.42-3.73 Gear Ratios, Rear, Cadillac, Chevy, GMC, Each

Part Number: ETN-917A732

Not Yet Reviewed

Estimated Ship Date: Monday 12/22/2025

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Valve Body, Billett Aluminum,Towing/HD. Dodge, 68RE, Gray Plug, Each

Part Number: RVM-68RFE-301A

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 12/22/2025

• Core Charge $350.00
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Differential Carrier, Positraction, Nodular Iron, GM 8.875 in., 30 Spline, 3.08 to 3.90 Ratio, Each

Part Number: SUM-730946

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 12/22/2025

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Torque Converter, 24-Spline, Mopar, Torqueflite 727, 2,800-3,200 Stall, Each

Part Number: SUM-G2709-11

2.71 out of 5 stars ( 14 )

Estimated Ship Date: Feb 27, 2026 if ordered today

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Torque Converter, Remanufactured Heavy-Duty, Stock Use, 36-spline Input, 12.500 in. Diameter, 6L80, 6L90, Cadillac, Chevy, GMC, Hummer, Pontiac, Each

Part Number: CCV-TQBU60HD

3.67 out of 5 stars ( 9 )

Estimated Ship Date: Monday 12/22/2025

• Core Charge $150.00
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Crate Axle, 67-70 Mustang Centurion 9-Inch, Black PC, 31-Spline, 3.70 Ratio, Helical Limited Slip, 11" Explorer Disc

Part Number: CUR-CR-FM237TEBB

Not Yet Reviewed

Estimated Ship Date: Monday 12/22/2025

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TORQUE CONVERTER, GM TORQUE CONVERTER 4L60/4L60E/700R4, 30 SPLINE 3800 STALL

Part Number: FTI-ESRL7082

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/22/2025

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Automatic Transmission Drums, Severe Duty, with Sprag Assembly, Billet Aluminum, GM, 4L80E, 4L85E and TH400, Kit

Part Number: ATI-407059

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/22/2025

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Servo, Super-Hold, 4th Gear, Billet Aluminum, GM, 4L60, 4L60E, 4L65E, 4L70E, Kit

Part Number: SOX-77767K

4.78 out of 5 stars ( 9 )

Estimated Ship Date: Monday 12/22/2025

• $10 Summit Bucks

Clutch Kit, Dual Friction, 1 1/16 in. Diameter Shaft, 10-Spline, 10 in. Diameter Disc, Ford, Mercury, Kit

Part Number: CTF-DF490030

4.88 out of 5 stars ( 8 )

Estimated Ship Date: Monday 12/22/2025

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Clutch Kit, RST Twin Disc Power Pack, 8-Bolt, 26-Spline, 1.125 in. Input Shaft Diameter, 9.688 in. Disc Diameter, Metallic Disc, Unsprung Hub, Kit

Part Number: MCL-6435807

Not Yet Reviewed

Estimated Ship Date: Monday 12/22/2025

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Flexplate and Hub Extension, 168-Tooth, LS Chevy Engine to GM Transmission, Each

Part Number: ADD-712500A

4.74 out of 5 stars ( 42 )

Estimated Ship Date: Monday 12/22/2025

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Clutch Kit, Centerforce II, 1.125 in. - 26-spline, Organic Disc, Pressure Plate, Buick, Chevy, GMC, Oldsmobile, Pontiac, Kit

Part Number: CTF-KCFT485216

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 12/22/2025

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Transmission Pan, Deep, Aluminum, Natural, Finned with Summit Logo, Chrysler, Torqueflite 727, Each

Part Number: SME-1009

4.84 out of 5 stars ( 43 )

Estimated Ship Date: Monday 12/22/2025

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Clutch Kit, Street Extreme, 1.125 in. - 26-spline, Ceramic Disc, Pressure Plate, Buick, Chevy, Pontiac, Kit

Part Number: MCL-75325

4.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 12/22/2025

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Ring and Pinion Gear Installation Kit, Master Overhaul, 30 Spline, GM 8.875 in., Passenger Car, Kit

Part Number: YGA-14067

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 12/22/2025

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Servo, Super-Hold, 2nd Gear, Billet Aluminum, GM, 4L60, 4L60E, 4L65E, 4L70E, Kit

Part Number: SOX-77911-03K

5.0 out of 5 stars ( 9 )

Estimated Ship Date: Monday 12/22/2025

• Free Shipping
• $10 Summit Bucks

Transmission Dipstick, Braided Stainless Steel, Firewall Mount, Black Tube, Chevy, GMC, 6L80E, 6L90E, Each

Part Number: LOK-XTD36L80FM36

4.8 out of 5 stars ( 10 )

Estimated Ship Date: Monday 12/22/2025

• Free Shipping