Performance & Replacement Transmission & Drivetrain Parts

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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 185

Lares Transfer Case Motors for 2002-2006 EXPEDITION, NAVIGATOR - 30130

Transfer Case Motors, Lares, New, Direct-fit, for Borg Warner 4416, 7-pin Plug, Round, Ford, Expedition, Lincoln, Navigator, 4.6L, 5.4L, Each

Part Number: LSC-30130

Not Yet Reviewed

Estimated Ship Date: May 28, 2026 if ordered today

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Estimated Ship Date: May 28, 2026 if ordered today

Trail-Gear Rock Assault Fully Built Axle Assemblies for 1985-1995 4RUNNER, 1979-1995 PICKUP, 1995-2004 TACOMA - 301305-1-KIT

Front Rock Assault +5 Width Fully Built Rhd Hi-Pinion 5.29 Detroit Locking Hubs Toyota

Part Number: TGI-301305-1-KIT

Not Yet Reviewed

Estimated Ship Date: May 20, 2026 if ordered today

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Estimated Ship Date: May 20, 2026 if ordered today

All Balls Racing Brake Drum Seals 23-13001

Seal, Brake Drum, ATV, Suzuki, Each

Part Number: ALB-30-13001

Not Yet Reviewed

Estimated Ship Date: May 1, 2026 if ordered today

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Estimated Ship Date: May 1, 2026 if ordered today

Eaton Detroit Truetrac 30 Spline Differential GM 8.5/8.6 Inch 913A481

Differential, Eaton Detroit Truetrac, Limited Slip, 30-Spline, GM, 8.5/8.6 in., 2.73 & up, Each

Part Number: ETN-913A481

4.85 out of 5 stars ( 136 )

Estimated Ship Date: Today

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Yukon Gear & Axle Dura Grip Positraction Carriers GM 8.5/8.6 Inch YDGGM8.5-3-30-1

Dura Grip Positraction Carrier, Traction-Loc, GM 8.5/8.6 in., 30 Spline, 2.73 Up Ratio, Each

Part Number: YGA-26016

4.25 out of 5 stars ( 36 )

Estimated Ship Date: Today

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All Balls Racing Complete 6-Ball Heavy-Duty CV Axles for 2007-2011 RTV1100, 2011-2016 RTV1140CPX, 2004-2011 RTV900 - 531-0801

Axle Shaft, 6 Ball Heavy Duty Axle

Part Number: ALB-AB6-KU-8-301

Not Yet Reviewed

Estimated Ship Date: Apr 29, 2026 if ordered today

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Estimated Ship Date: Apr 29, 2026 if ordered today

Motive Gear Ring and Pinion Sets GM10-411A GM 8.5/8.6 in. 4.11 Gears

Ring and Pinion Gears, 4.11:1 Ratio, 30-spline, Standard Rotation, GM 8.5 in., GM 8.6 in., Set

Part Number: MGR-GM10-411A

4.71 out of 5 stars ( 7 )

Estimated Ship Date: Today

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All Balls Racing Complete 6-Ball Heavy-Duty CV Axles for 2003-2008 YFM660F GRIZZLY 4X4 - 531-0713

Axle Shafts, Direct Fit, All Balls Racing Complete 6-Ball Heavy-Duty CV Axles, CV-Style, Rear Left, Yamaha, Each

Part Number: ALB-AB6-YA-8-301

Not Yet Reviewed

Estimated Ship Date: Apr 29, 2026 if ordered today

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Estimated Ship Date: Apr 29, 2026 if ordered today

All Balls Racing Complete 6-Ball Heavy-Duty CV Axles 531-0501

Axle Shaft, 6 Ball Heavy Duty Axle

Part Number: ALB-AB6-PO-8-301

Not Yet Reviewed

Estimated Ship Date: May 1, 2026 if ordered today

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Estimated Ship Date: May 1, 2026 if ordered today

All Balls Racing Complete 6-Ball Heavy-Duty CV Axles 531-0332

Axle Shaft, Complete 6-Ball Heavy-Duty CV Axle, 4340 Chromoly, Rear Left/Rear Right, for use on Honda®, Each

Part Number: ALB-AB6-HO-8-301

Not Yet Reviewed

Estimated Ship Date: May 1, 2026 if ordered today

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Estimated Ship Date: May 1, 2026 if ordered today

All Balls Racing Complete 6-Ball Heavy-Duty CV Axles 531-0408

Axle Shaft, 6 Ball Heavy Duty Axle

Part Number: ALB-AB6-KW-8-301

Not Yet Reviewed

Estimated Ship Date: Apr 29, 2026 if ordered today

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Estimated Ship Date: Apr 29, 2026 if ordered today

All Balls Racing Complete 6-Ball Heavy-Duty CV Axles 531-0605

Axle Shaft, 6 Ball Heavy Duty Axle

Part Number: ALB-AB6-SK-8-301

Not Yet Reviewed

Estimated Ship Date: May 1, 2026 if ordered today

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Estimated Ship Date: May 1, 2026 if ordered today

Motive Gear Ring and Pinion Sets GM10-342A GM 8.5/8.625 in. 3.42 Gears

Ring and Pinion Gears, 3.42:1 Ratio, 30-spline, Standard Rotation, GM 8.5 in., GM 8.6 in., Set

Part Number: MGR-GM10-342A

4.41 out of 5 stars ( 17 )

Estimated Ship Date: Today

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Yukon Gear & Axle Ring and Pinion Sets YG GM8.5-373 GM 8.5/8.6 in. 3.73 Gears

Gear, Ring and Pinion, 3.73:1 Ratio, 1.625 in. Pinion, 30-Spline, GM 8.5/8.6 in., Set

Part Number: YGA-24158

4.1 out of 5 stars ( 10 )

Estimated Ship Date: Today

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Motive Gear Ring and Pinion Sets GM10-456A GM 8.5/8.625 in. 4.56 Gears

Ring and Pinion Gears, 4.56:1 Ratio, 30-spline, Standard Rotation, GM 8.5 in., GM 8.6 in., Set

Part Number: MGR-GM10-456A

4.46 out of 5 stars ( 13 )

Estimated Ship Date: Today

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Richmond Gear EXCel Ring and Pinion Sets GM85410 GM 8.5/8.6 in. 4.10 Gears

Ring and Pinion Gears, EXCel, 4.10:1 Ratio, 30-spline, Standard Rotation, GM 8.5 in., GM 8.6 in., Set

Part Number: RMG-GM85410

4.0 out of 5 stars ( 8 )

Estimated Ship Date: Today

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FTI Performance MR Series 4,000 Stall Torque Converter MR8082

Torque Converters, MR Series, Hard Hitting, 1.703 in. Crank Pilot Diameter, 30-spline, 9.500 in. Diameter, Race Usage, TH350, TH400, Each

Part Number: FTI-MR8082

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Yukon Gear & Axle Ring and Pinion Sets YG GM8.5-411 GM 8.5/8.6 in. 4.11 Gears

Gear, Ring and Pinion, 4.11:1 Ratio, 1.625 in. Pinion, 30 Spline, 8.500 in. Ring Gear, GM 8.5/8.6 in., Set

Part Number: YGA-24160

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Today

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FTI Performance MR Series 3,500 Stall Torque Converter MR6082

Torque Converters, MR Series, 1.703 in. Crank Pilot Diameter, 30-spline, 9.500 in. Diameter, Race Usage, TH350, TH400, Each

Part Number: FTI-MR6082

Not Yet Reviewed

Estimated Ship Date: Today

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B&M Nitrous Holeshot 3,500-3,800 Stall Torque Converter 20485

Torque Converter, Nitrous Holeshot, 3,500-3,800 rpm Stall Range, 30-spline, THM350/THM400, Each

Part Number: BMM-20485

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Yukon Gear & Axle Ring and Pinion Sets YG GM8.5-342 GM 8.5/8.6 in. 3.42 Gears

Gear, Ring and Pinion, 3.42:1 Ratio, 1.625 in. Pinion, 30 Spline, 8.500 in. Ring Gear, GM 8.5/8.6 in., Set

Part Number: YGA-24157

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Moser Engineering Replacement C-Clip Axles A103003-1

Axle, Direct Fit, C-Clip, Rear, 1541H Steel, 30-Spline, GM F-Body, A-Body, 8.5 in., Each

Part Number: MSR-A103003-1

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Yukon Gear & Axle 28/30 Spline Differential Carrier Cases GM 8.5 Inch YC G26010481

Differential Carrier Cases, GM 8.5 in., 28/30 Spline, 2.73 and Up Ratio, Each

Part Number: YGA-20083

4.6 out of 5 stars ( 5 )

Estimated Ship Date: Today

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Yukon Gear & Axle Ring and Pinion Sets YG GM8.5-390 GM 8.5/8.6 in. 3.90 Gears

Ring and Pinion Gears, 3.90:1 Ratio, 30-spline, Standard Ring Gear Rotation, GM 8.5 in., GM 8.6 in., Set

Part Number: YGA-24159

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Eaton Electronic ELocker 30 Spline Differential GM 8.6 Inch 19659-010

Differential, Posi Performance, Electric Locker, 30-Spline, GM, 8.5 in., Each

Part Number: ETN-19659-010

Not Yet Reviewed

Estimated Ship Date: Today

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