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.

Individual Parts

Part Groups

Results 1 - 25 of 135

Gennie Shifter Lo-Stik Shifter Assemblies 1021

Gennie Shifter Lo-Stik Shifter Assemblies 1021

Shifters, Automatic Transmission, Lo-Stik Shifter Assemblies, Linkage Operated, Gate and Ratchet, Reverse Lockout, Chevy, Each

Part Number: GIS-1021

4.7 out of 5 stars ( 10 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

RAM 1000 Series Clutch Discs 1021

Clutch Disc, Sintered Bronze, 1 1/8 in. Diameter Shaft, 10-Spline, 10.5 in. Diameter Disc, Drag Race, Each

Part Number: RAM-1021

Not Yet Reviewed

Estimated Ship Date: Aug 20, 2025 if ordered today

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Estimated Ship Date: Aug 20, 2025 if ordered today

Richmond Gear Complete Ring and Pinion Installation Kits 83-1021-1

Ring and Pinion Installation Kit, GM, 8.5 in., 8.6 in., 10-Bolt, Spline Pinion, Kit

Part Number: RMG-8310211

4.23 out of 5 stars ( 39 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Richmond Gear EXCel Ring and Pinion Gear Installation Kits XL-1021-1

Ring and Pinion Installation Kit, EXCel, GM, 8.5 in., 10-Bolt, 30 Spline Pinion, Koyo Bearings, Kit

Part Number: RMG-XL-1021-1

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

SCS Gearbox 10-Spline Sportsman Series Quick-Change Gears 1021-SPT

Quick Change Gears, Sportsman, 10-Spline, SAE 8620 Steel, Set 21, 17/26 Teeth, Set

Part Number: SGB-1021-SPT

Not Yet Reviewed

Estimated Ship Date: Aug 25, 2025 if ordered today

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Estimated Ship Date: Aug 25, 2025 if ordered today

Cardone Remanufactured CV Drive Axles 60-1021

Axle Shaft, CV-Style, Replacement, Each

Part Number: AAZ-60-1021

Not Yet Reviewed

Estimated Ship Date: Oct 31, 2025 if ordered today

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Estimated Ship Date: Oct 31, 2025 if ordered today

All Balls U-Joints 19-1021

U-joint kit

Part Number: ALB-19-1021

Not Yet Reviewed

Estimated Ship Date: Aug 20, 2025 if ordered today

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Estimated Ship Date: Aug 20, 2025 if ordered today

GMB North America U-Joints 251-1021

Universal Joint

Part Number: GMB-251-1021

Not Yet Reviewed

Estimated Ship Date: Sep 4, 2025 if ordered today

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Estimated Ship Date: Sep 4, 2025 if ordered today

Motion Pro Terminator LW Clutch Cables for 2007 DS 650 X, 2005 DS650, 2005-2006 DS650 X - 01-1021

Clutch Cable, Terminator LW, Adjustable, Black Vinyl Jacket, Bombardier, Can-Am, Each

Part Number: MNP-01-1021

Not Yet Reviewed

Estimated Ship Date: Aug 20, 2025 if ordered today

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Estimated Ship Date: Aug 20, 2025 if ordered today

Sierra Marine Wheel Bearing & Seal Kits 72-1021

Wheel Bearing & Seal Kit

Part Number: RRA-72-1021

Not Yet Reviewed

Estimated Ship Date: Sep 8, 2025 if ordered today

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Estimated Ship Date: Sep 8, 2025 if ordered today

All Balls Racing Wheel and Carrier Bearing Seal Kits for 1999-2006 TTR250 - 22-51021

BEARING/SEAL KIT WHEEL

Part Number: ALB-25-1021

Not Yet Reviewed

Estimated Ship Date: Aug 19, 2025 if ordered today

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Estimated Ship Date: Aug 19, 2025 if ordered today

Richmond Gear Mega Ring and Pinion Installation Kits 83-1021-M

Ring and Pinion Installation Kit, GM, 8.5 in., 10-Bolt, Kit

Part Number: RMG-831021M

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Richmond Gear Mega Ring and Pinion Installation Kits 83-1021-TE

Ring and Pinion Installation Kit, GM, 8.5 in., 10-Bolt, Kit

Part Number: RMG-831021TE

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Richmond Gear Ring and Pinion Installation Half Kits 83-1021-B

Ring and Pinion Installation Kit, GM, 10-Bolt, 8.5 in. Diameter Ring Gear, 30-Spline Pinion, Kit

Part Number: RMG-831021B

2.67 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Dorman Driveshafts for 2003-2018 4300 - 936-1021

Driveshafts, Rear, Steel, Balanced, HD Assembled, 4.00 in. Diameter, 161.875 in. Length, International, Each

Part Number: RNB-936-1021

Not Yet Reviewed

Estimated Ship Date: Aug 21, 2025 if ordered today

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Estimated Ship Date: Aug 21, 2025 if ordered today

Strange Axle Bearings A1021

Axle Bearing, with Lock Ring, 1.563 in. I.D., 3.150 in. O.D., Ford, 9 in., Each

Part Number: STR-A1021

4.0 out of 5 stars ( 17 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Excel Rims Sprockets 27-9212

Pro Series Carrier, 2FC-1021 Black

Part Number: EXR-2FC-1021

Not Yet Reviewed

Estimated Ship Date: Aug 11, 2025 if ordered today

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Estimated Ship Date: Aug 11, 2025 if ordered today

Strange Axle Bearing O-Rings A1021RS

Axle Seal, O-ring, Each

Part Number: STR-A1021RS

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Motive Gear Light-Duty Axle Shafts for 1993-1997 CAMARO, FIREBIRD - MG1021

Axle Shaft, OEM Replacement, C-clip, 1541H Alloy Steel, 28-spline Inner, 32.000 in. Length, Each

Part Number: MGR-MG1021

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

RAM OEM Replacement Clutch Discs D 1021HD

Clutch Disc, Replacement, 1 1/8 in.- 10-Spline, 10.5 in. Disc, Organic, Each

Part Number: RAM-D1021HD

Not Yet Reviewed

Estimated Ship Date: Aug 19, 2025 if ordered today

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Estimated Ship Date: Aug 19, 2025 if ordered today

Shiftworks Horseshoe Shifters for 1968-1969 CAMARO - SW1021

Shifters, Automatic Transmission, Floor Mount, Cable Operated, Detent, Reverse Lockout, Horseshoe Knob, 4L80E, Chevy, Kit

Part Number: SIW-SW1021

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Shiftworks Horseshoe Shifters for 1968-1969 CAMARO - SW1021-R

SHIFTER CONVERSION KITS, AUTOMATIC TRANSMISSION, Horseshoe RATCHET STYLE Shifter kit 4L80E. Includes Neutral S

Part Number: SIW-SW1021R

Not Yet Reviewed

Estimated Ship Date: Aug 18, 2025 if ordered today

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Estimated Ship Date: Aug 18, 2025 if ordered today

South Bend Clutch Stage 3 Drag Race Clutch Kits for 2007-2009 911 - K70284-04-SS-DXD-B-SMF

Clutch Kit, Stage 3 Drag Race, Single, 1.031 in. - 23-spline, Ceramic Disc, Pressure Plate, Porsche, 3.6L, Kit

Part Number: SBB-S1021

Not Yet Reviewed

Estimated Ship Date: Aug 27, 2025 if ordered today

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Estimated Ship Date: Aug 27, 2025 if ordered today

Shiftworks Horseshoe Shifters for 1968-1969 CAMARO - SW1021-RVB

Shifter, 1968-69 Camaro 4-Spd Automatic Reverse Valve Body Shifter Package 4L80E, 4L85E, features Slap-Shift function

Part Number: SIW-SW1021-RVB

Not Yet Reviewed

Estimated Ship Date: Aug 12, 2025 if ordered today

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Estimated Ship Date: Aug 12, 2025 if ordered today

Sachs Stock Replacement Clutch Discs SD1021

CLUTCH DISC

Part Number: SXR-SD1021

Not Yet Reviewed

Estimated Ship Date: Aug 29, 2025 if ordered today

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Estimated Ship Date: Aug 29, 2025 if ordered today

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