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...

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Summit Racing™ Dual-Exhaust Transmission Crossmembers for 1982-2004 S10 - SUM-770309

Summit Racing™ Dual-Exhaust Transmission Crossmembers for 1982-2004 S10 - SUM-770309

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: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

Summit Racing™ Transmission Mounts SUM-7731165

Transmission Mount, Steel, Rubber, GM, TH350, TH400, 700R4, Powerglide, Borg Warner, Saginaw, Muncie, Each

Part Number: SUM-7731165

4.77 out of 5 stars ( 57 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

Summit Racing™ Dual-Exhaust Transmission Crossmembers SUM-770312

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

Part Number: SUM-770312

4.35 out of 5 stars ( 17 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

Summit Racing™ Dual-Exhaust Transmission Crossmembers SUM-770308

Crossmember, Transmission, Steel, Black, 700R4, 200-4R, TH350, TH400, Powerglide, Each

Part Number: SUM-770308

4.63 out of 5 stars ( 76 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

Summit Racing™ Dual-Exhaust Transmission Crossmembers SUM-770301

Crossmember, Transmission, Steel, Black, GM, 700R4/T-5/4L60, Each

Part Number: SUM-770301

4.74 out of 5 stars ( 47 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

Summit Racing™ Dual-Exhaust Transmission Crossmembers for 1968-1981 CORVETTE - SUM-770319

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

Part Number: SUM-770319

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

Trans-Dapt Performance Crossmembers for 1982-1994 S10, 1982-1990 S15 - 9718

Crossmember, Transmission, Chevy, GMC, S10, S15, TH350, 700R4, Kit

Part Number: TRD-9718

2.81 out of 5 stars ( 16 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

Trans-Dapt Performance Transmission Mount Pads 9442

Transmission Mount Pad, Rubber/Steel, Black, Powerglide, TH350, TH400, 700R4, 4L60, Muncie 4-speed, Saginaw, Borg Warner, Each

Part Number: TRD-9442

4.33 out of 5 stars ( 21 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

Classic Performance Transmission Crossmembers CP90343

Transmission Crossmember, Tubular, Steel, Black Powdercoated, Chevy, 4L60, 700R4, Each

Part Number: CLP-CP90343

4.0 out of 5 stars ( 13 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

Summit Racing™ Dual-Exhaust Transmission Crossmembers for 1975-1981 CAMARO, FIREBIRD, 1975-1979 NOVA - SUM-770318

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

Part Number: SUM-770318

4.67 out of 5 stars ( 6 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

Summit Racing™ Transmission Crossmembers SUM-770581-R1

Transmission Crossmember, Steel, Black Powdercoated, 73-87 Chevy, GMC, C-10, TH350, TH400, Powerglide, 700R4, Each

Part Number: SUM-770581-R1

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

Classic Performance Transmission Crossmembers CP90171

Transmission Crossmember, Steel, Black Powdercoated, Chevy, GMC, TH350, TH400, Powerglide, 700R4, Each

Part Number: CLP-CP90171

3.66 out of 5 stars ( 41 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

Summit Racing™ Lightweight Transmission Crossmembers SUM-770398

Crossmember, Transmission, Lightweight, Steel, GM, 65-72 Chevelle, Cutlass, GTO, 700R4, 200-4R, TH350, TH400, Powerglide, Each

Part Number: SUM-770398

4.5 out of 5 stars ( 4 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

Hooker Blackheart Transmission Crossmembers 71222018HKR

Transmission Crossmember, LS Engine Swap, Steel, Black Powdercoated, 700R4, TH350, Powerglide, Chevy, GMC, RWD, Each

Part Number: HOK-71222018HKR

3.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

ICT Billet Solid Transmission Mounts 551404

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: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

Trans-Dapt Performance Swap-In-A-Box Complete Engine Swap Kits 99096

Engine Swap Kit, Black MAXX Headers, Motor Mounts, Oil Pan, Pickup, Gaskets, Hardware, Chevy, 1986-00 Small Block Chevy, TH350, 700R4, Kit

Part Number: TRD-99096

Not Yet Reviewed

Estimated Ship Date: Jun 29, 2026 if ordered today

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Estimated Ship Date: Jun 29, 2026 if ordered today

Summit Racing™ Dual-Exhaust Transmission Crossmembers for 1970-1974 CAMARO, FIREBIRD - SUM-770315

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

Part Number: SUM-770315

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

Summit Racing™ Dual-Exhaust Transmission Crossmembers SUM-770372

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

Part Number: SUM-770372

4.2 out of 5 stars ( 5 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

Hooker Blackheart Transmission Crossmembers 71222024HKR-2

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

Part Number: HOK-71222024HKR2

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

Trans-Dapt Performance Transmission Mount Pads 4185

Transmission Mount Pad, Steel, Black, Powerglide, TH350, TH400, 700R4, 4L60, Borg Warner, Saginaw, A833, Each

Part Number: TRD-4185

3.36 out of 5 stars ( 11 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

Summit Racing™ Dual-Exhaust Transmission Crossmembers SUM-770323

Crossmember, Transmission, Steel, Black, GM, A-Body, 700R4, Each

Part Number: SUM-770323

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jun 11, 2026 if ordered today

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Estimated Ship Date: Jun 11, 2026 if ordered today

Summit Racing™ Lightweight Transmission Crossmembers SUM-770391

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

Part Number: SUM-770391

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

Trans-Dapt Performance Crossmembers 6559

Transmission Crossmember, With Mount, Steel, Weld-up, 26 in. to 36 in. Width, 3 in. Drop, 700R4/4L60/T-56, Eac

Part Number: TRD-6559

4.1 out of 5 stars ( 10 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

Trans-Dapt Performance Universal Transmission Mounts 6544

Transmission Crossmember, Steel, Weld-up, 26 in. to 36 in. Width, 6 in. Drop, 700R4/4L60/T-56, Each

Part Number: TRD-6544

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

UMI Performance Transmission Crossmembers for 1982-1992 CAMARO, FIREBIRD - 2221-R

Transmission Crossmember, Red Powdercoated, Steel, GM, 700R4/T-5, Each

Part Number: UPI-2221-R

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

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