Performance & Replacement Transmission & Drivetrain Parts

Differential, Select-A-Loc, 30-Spline, Dana 44, 10-Bolt, Each

Part Number: AUB-545041

Not Yet Reviewed

Estimated Ship Date: Jan 9, 2026 if ordered today

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Manual Transmission, Magnum XL, 6-Speed, 1 1/8 in. 26-Spline, 2.66 First Gear, 0.63 Overdrive, Each

Part Number: REM-TUET18131

Not Yet Reviewed

Estimated Ship Date: Feb 6, 2026 if ordered today

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• Freight Charge
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Differential, Select-A-Loc, 35-Spline, Dana 44, 10-Bolt, Each

Part Number: AUB-545021

Not Yet Reviewed

Estimated Ship Date: Monday 12/8/2025

• Free Shipping

Pressure Transducer Adapter, Dodge, Each

Part Number: BDD-1060604

Not Yet Reviewed

Estimated Ship Date: Monday 12/8/2025

Modulator Plunger Valve, Valve Body Replacement Component, 4R100, E4OD, Kit

Part Number: SOX-96948-05K

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/8/2025

• $10 Summit Bucks

Differential, Auburn, Locker, Select-A-Loc, 35-Spline, Dana 60, 10-Bolt, Each

Part Number: AUB-545022

Not Yet Reviewed

Estimated Ship Date: Monday 12/8/2025

• Free Shipping

Automatic Transmission, Up to 750 hp/550 ft. lbs. Max, Level 4, 4R70W, 4WD, 2,600 - 4,500 Stall, 2 Bolt Starter, Small Block Ford, Kit

Part Number: GES-GS4R7024X4L4

Not Yet Reviewed

Estimated Ship Date: Monday 12/8/2025

• Core Charge $500.00
• Free Shipping
• Mfr. Rebate

$250.00 Mail-In Rebate

Price after Manufacturer Rebate: $7,845.00

Rebate Expires: 12/31/2025

Get $250 back after rebate on this Gearstar Transmission! Go to https://www.summitracing.com/go/ges to redeem offer. ...Read More

Get $250 back after rebate on a Gearstar Performance Level 3, Level 4, or Level 5 Transmission. Go to https://www.summitracing.com/go/ges to redeem offer. Valid on purchases made between 12/1/25 and 12/31/25. Rebate submission must be postmarked within 30 days of purchase. Allow 2-4 weeks for processing. Rebate for end consumer only. Show Less

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Differential, Select-A-Loc, Locker, 30-Spline, Buick, Chevy 8.5 in., Each

Part Number: AUB-545004

3.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 12/8/2025

• Free Shipping

Driveshaft, 2-Piece, Rear, 4140 Chromoly, Jeep, Each

Part Number: MGR-TFR1310-2137

Not Yet Reviewed

Estimated Ship Date: Dec 26, 2025 if ordered today

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AUTO TRANSMISSION KIT 6L80 LT4

Part Number: NAL-19432684

Not Yet Reviewed

Estimated Ship Date: Apr 6, 2026 if ordered today

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Driveshaft, 2-Piece, Rear, 4140 Chromoly, Jeep, Each

Part Number: MGR-TFR1310-2135

Not Yet Reviewed

Estimated Ship Date: Monday 12/8/2025

• Free Shipping

Transmission Controller, TCU 2.0, Ford, 4R100, E4OD, 5R55E, Each

Part Number: TCI-30383-KIT

Not Yet Reviewed

Estimated Ship Date: Monday 12/8/2025

• Free Shipping

Differential, Auburn, Locker, 27-Spline, Dana 35, 10-Bolt, Each

Part Number: AUB-545013

Not Yet Reviewed

Estimated Ship Date: Monday 12/8/2025

• Free Shipping

Differential Carrier, Select-A-Loc, Electric Locker Style, 35-spline, Ductile Iron, Rear, Dana 80, 3.07 thru 3.73 Ratio Only, Each

Part Number: AUB-545033

Not Yet Reviewed

Estimated Ship Date: Monday 12/8/2025

• Free Shipping

Differential, Select-A-Loc, 35-Spline, Dana 44, 10-Bolt, Each

Part Number: AUB-545044

Not Yet Reviewed

Estimated Ship Date: Jan 9, 2026 if ordered today

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Differential, Select-A-Loc, 35-Spline, Dana Super 44, 10-Bolt, Each

Part Number: AUB-545045

Not Yet Reviewed

Estimated Ship Date: Jan 9, 2026 if ordered today

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Automatic Transmission Controller, Atomic, Handheld Unit Only GM, Ford, Lincoln, Mercury, Each

Part Number: MSD-2762

Not Yet Reviewed

Estimated Ship Date: Dec 19, 2025 if ordered today

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Transmission Controller Components, Replacement, Communication Cable, EZ-TCU, Each

Part Number: TCI-30104

Not Yet Reviewed

Estimated Ship Date: Monday 12/8/2025

Transmission Controller Components, Replacement, Cigarette Lighter Adapter, EZ-TCU, Each

Part Number: TCI-30271

Not Yet Reviewed

Estimated Ship Date: Monday 12/8/2025

Transfer Case Motor, Cadillac, Chevy, GMC, Hummer, Each

Part Number: RNB-600-908

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 12/8/2025

• Free Shipping

Transfer Case Motor, Oval 7 Pin Plug Style, NVG246, Chevy, GMC, Each

Part Number: RNB-600-910

3.92 out of 5 stars ( 12 )

Estimated Ship Date: Monday 12/8/2025

• Free Shipping

Combo, ProFit, Close Ratio, T-56 Magnum, 6-Speed, 1967-69 GM F-Body, 2.66:1 First Gear, 0.63:1 Sixth, Kit

Part Number: AWR-COGM-F1G

Not Yet Reviewed

Estimated Ship Date: Feb 3, 2026 if ordered today

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Combo, ProFit, Wide Ratio, T-56 Magnum, 6-Speed, 1967-69 GM F-Body, 2.97:1 First Gear, 0.50:1 Sixth, Kit

Part Number: AWR-COGM-F1J

Not Yet Reviewed

Estimated Ship Date: Feb 3, 2026 if ordered today

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Combo, ProFit, Close Ratio, T-56 Magnum, 6-Speed, 1970-74 GM F-Body, 2.66:1 First Gear, 0.63:1 Sixth, Kit

Part Number: AWR-COGM-F2G

Not Yet Reviewed

Estimated Ship Date: Feb 3, 2026 if ordered today

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Combo, ProFit, Wide Ratio, T-56 Magnum, 6-Speed, 1970-74 GM F-Body, 2.97:1 First Gear, 0.50:1 Sixth, Kit

Part Number: AWR-COGM-F2J

Not Yet Reviewed

Estimated Ship Date: Feb 3, 2026 if ordered today

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• Special Order