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Chassis & Suspension

Car & Truck Chassis & Suspension Parts

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Car & Truck Chassis & Suspension Parts

Welcome to the home of great handling and ride quality! We stock a huge assortment of car and truck chassis and suspension parts like shocks, struts, and coil and leaf...

Welcome to the home of great handling and ride quality! We stock a huge assortment of car and truck chassis and suspension parts like shocks, struts, and coil and leaf springs, so whether you want a smooth street ride, responsive race handling, or rugged off-road control, you can find all the parts you need for your suspension upgrades here. We have complete lowering kits for a road-hugging sport stance, and lift kits to accommodate massive tires and greater suspension travel. Summit also has steering components, sway bars, frame rails and connectors, tie rods, wheelie bars, and wheel tubs, plus engine, transmission, and...

Welcome to the home of great handling and ride quality! We stock a huge assortment of car and truck chassis and suspension parts like shocks, struts, and coil and leaf springs, so whether you want a smooth street ride, responsive race handling, or rugged off-road control, you can find all the parts you need for your suspension upgrades here. We have complete lowering kits for a road-hugging sport stance, and lift kits to accommodate massive tires and greater suspension travel. Summit also has steering components, sway bars, frame rails and connectors, tie rods, wheelie bars, and wheel tubs, plus engine, transmission, and suspension mounts and bushings.

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Individual Parts

Results 1 - 25 of 116

Crossmember, Transmission, Steel, Black, GM, 4L60E 700R4, 200-4R, TH350, Powerglide, Each

Part Number: SUM-770309

4.78 out of 5 stars ( 41 )

Estimated Ship Date: Today

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Engine Swap Kit, Headers, Motor Mounts, Oil Pan, Pickup, Gaskets, Hardware, Chevy, LS, 4L60E, 4L70E, Kit

Part Number: TRD-42163

2.0 out of 5 stars ( 2 )

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Torque Arm Relocation Kit, Red Powdercoated, Steel, Chevy, Pontiac, 4L60E, Kit

Part Number: UPI-2261R

5.0 out of 5 stars ( 2 )

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Transmission Crossmember, LS Engine Swap, Steel, Black Powdercoated, T56, 4L60E, 4L70E, 4L75E, TH400, Chevy, GMC, RWD, Each

Part Number: HOK-71222019HKR

4.67 out of 5 stars ( 9 )

Estimated Ship Date: Today

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Transmission Crossmember, LS Swap, 4L60E/4L70E, Chevy S10, GMC S15, Kit

Part Number: TRD-9719

4.4 out of 5 stars ( 5 )

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Crossmember, Transmission, Steel, Black, GM, 700R4/4L60/4L60E, Each

Part Number: SUM-770318

4.67 out of 5 stars ( 6 )

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Transmission Mounts, Solid, Billet Aluminum, Natural, RWD, GM, TH350, TH400, Saginaw, Powerglide, Muncie Four Speed, 4L60E, 4L60/700R4, Each

Part Number: ICB-551404

4.88 out of 5 stars ( 8 )

Estimated Ship Date: Today

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Transmission Crossmember, Steel, Chevy, B-Body, 700R4, 4L60E, Each

Part Number: SUM-770372

4.2 out of 5 stars ( 5 )

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Motor Mounts, Engine Swap, Complete, Bolt-In, Steel/Rubber, Black/Black, LS1, 4L60E, 4L70E, Kit

Part Number: TRD-4600

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Crossmember, Transmission, Lightweight, Steel, GM, 78-88 G-Body, Using 700R4, 4L60E, or T5 manual, Each

Part Number: SUM-770391

Not Yet Reviewed

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Crossmember, Transmission, Steel, Black, GM, 700R4/4L60/4L60E, Each

Part Number: SUM-770315

5.0 out of 5 stars ( 6 )

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Transmission crossmember, GM LS/LT Swap, 4L60E, TH350, 6L80, 700R4, Chevrolet, GMC, Each

Part Number: HOK-71222024HKR2

Not Yet Reviewed

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Transmission Crossmember Extension Bracket, Bolt-on, Steel, Black, Buick, Chevy, Pontiac, LS, 4L60, 4L60E

Part Number: HOK-12655HKR

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Brackets, Crossmember Extension Brackets, Steel, Black, 4L70E, 4L60E, Chevy, Pontiac, Each

Part Number: HOK-71223003HKR

Not Yet Reviewed

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Torque Arm Relocation Kit, Red Powdercoated, Steel, Chevy, Pontiac, 4L60E, Kit

Part Number: UPI-2208-R

5.0 out of 5 stars ( 1 )

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Transmission Crossmember, Steel, Black, 3 in. Drop, 26 in. to 36 in. Width, Chevy, 4L60E, 700R4, T-56, Kit

Part Number: TRD-6549

Not Yet Reviewed

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Transmission Mounts, PFADT Series, Billet Aluminum Bracket, Orange/Nickel, Black Polyurethane Bushing, 4L60E/MM6/T56, Chevrolet, 5.7L LS, Each

Part Number: AFE-450-401011-N

4.0 out of 5 stars ( 1 )

Estimated Ship Date: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 if ordered today

Transmission conversion crossmember, 4L60E, LS1

Part Number: BMR-TC341R

Not Yet Reviewed

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Transmission Crossmember, Steel, Black, Chevy, 4L60E, 700R4, T-56, Kit

Part Number: TRD-6548

5.0 out of 5 stars ( 1 )

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Red Polyurethane GM LS Swap Transmission Mount Kit For 4.8 5.3 6.0 4l60e 4l80e

Part Number: HLI-790394

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

Torque Arm Crossmember, Tunnel Mounted, Steel, Black, 4L60E Transmission, Chevy, Pontiac, Each

Part Number: QA1-52125

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Estimated Ship Date: May 4, 2026 if ordered today

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Estimated Ship Date: May 4, 2026 if ordered today

Transmission conversion crossmember, 4L60E, LS1

Part Number: BMR-TC341H

Not Yet Reviewed

Estimated Ship Date: May 22, 2026 if ordered today

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Estimated Ship Date: May 22, 2026 if ordered today

Transmission Crossmember, Steel, Black, 6 in. Drop, 26 in. to 36 in. Width, Chevy, 4L60E, 700R4, T-56, Kit

Part Number: TRD-6534

Not Yet Reviewed

Estimated Ship Date: Jun 25, 2026 if ordered today

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Estimated Ship Date: Jun 25, 2026 if ordered today

82-'92 GM F-Body Torque Arm Relocation Kit- 4L60E, Black

Part Number: UPI-2261-B

Not Yet Reviewed

Estimated Ship Date: Jun 11, 2026 if ordered today

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Estimated Ship Date: Jun 11, 2026 if ordered today