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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Results 1 - 25 of 34

UMI Performance GM G-Body LSX Engine Mounts 2406-B

UMI Performance GM G-Body LSX Engine Mounts 2406-B

Motor Mounts, Plate, Bolt-In, Steel, Black Powdercoated, Buick, Chevy, GMC, Oldsmobile, Pontiac, V8, LSX, Kit

Part Number: UPI-2406-B

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Summit Racing™ Dual-Exhaust Transmission Crossmembers SUM-770324

Crossmember, Transmission, Steel, Black, GM, G-Body, 4L80E, Each

Part Number: SUM-770324

4.58 out of 5 stars ( 12 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

UMI Performance GM G-Body LSX Engine Mounts 2406-R

Motor Mounts, Plate, Bolt-In, Steel, Red Powdercoated, Buick, Chevy, GMC, Oldsmobile, Pontiac, V8, LSX, Kit

Part Number: UPI-2406-R

4.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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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: Today

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Estimated Ship Date: Today

Summit Racing™ Dual-Exhaust Transmission Crossmembers SUM-770307

Transmission Frame Extension, Steel, Black, GM G-body, Automatic, Manual, Each

Part Number: SUM-770307

4.67 out of 5 stars ( 9 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Summit Racing™ Lightweight Transmission Crossmembers SUM-770560

Transmission Crossmember, Lightweight, Steel, Black Powdercoated, G-Body, Buick, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: SUM-770560

Not Yet Reviewed

Estimated Ship Date: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

Summit Racing™ Lightweight Transmission Crossmembers SUM-770555

Transmission Crossmember, Lightweight, Steel, Black Powdercoated, G-Body, Buick, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: SUM-770555

Not Yet Reviewed

Estimated Ship Date: Mar 10, 2026 if ordered today

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Estimated Ship Date: Mar 10, 2026 if ordered today

Summit Racing™ Lightweight Transmission Crossmembers SUM-770392

Crossmember, Transmission, Lightweight, Steel, GM,78-88 G-Body using TH400 w/Short Tailshaft or 200-4R, Each

Part Number: SUM-770392

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Summit Racing™ Lightweight Transmission Crossmembers SUM-770559

Transmission Crossmember, Lightweight, Steel, Black Powdercoated, G-Body, Buick, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: SUM-770559

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

Summit Racing™ Dual-Exhaust Transmission Crossmembers SUM-770557

Transmission Crossmember, Steel, Black Powdercoated, G-Body, Buick, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: SUM-770557

Not Yet Reviewed

Estimated Ship Date: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

Summit Racing™ Dual-Exhaust Transmission Crossmembers SUM-770562

Transmission Crossmember, Steel, Black Powdercoated, G-Body, Buick, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: SUM-770562

Not Yet Reviewed

Estimated Ship Date: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

Trans-Dapt Performance Frame Rail Adapter Kits 6423

Transmission Mount, LS into GM A/G-Body Car, Transmission Crossmember, Adapter Plate, Kit

Part Number: TRD-6423

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Summit Racing™ Lightweight Transmission Crossmembers SUM-770558

Transmission Crossmember, Lightweight, Steel, Black Powdercoated, G-Body, Buick, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: SUM-770558

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

Summit Racing™ Dual-Exhaust Transmission Crossmembers SUM-770561

Transmission Crossmember, Steel, Black Powdercoated, G-Body, Buick, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: SUM-770561

Not Yet Reviewed

Estimated Ship Date: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

Summit Racing™ Dual-Exhaust Transmission Crossmembers SUM-770556

Transmission Crossmember, Steel, Black Powdercoated, G-Body, Buick, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: SUM-770556

Not Yet Reviewed

Estimated Ship Date: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

Silver Sport Transmission Engine Crossmembers XMG-14008

Crossmember GM G-Body 1978-88 TKO/TKX

Part Number: IST-XMG-14008

Not Yet Reviewed

Estimated Ship Date: Feb 20, 2026 if ordered today

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Estimated Ship Date: Feb 20, 2026 if ordered today

Silver Sport Transmission Engine Crossmembers XMG-14007

Crossmember GM G-Body 1978-88 Magnum

Part Number: IST-XMG-14007

Not Yet Reviewed

Estimated Ship Date: Feb 20, 2026 if ordered today

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Estimated Ship Date: Feb 20, 2026 if ordered today

Silver Sport Transmission Engine Crossmembers XMM-11500

Crossmember Mopar A-Body 1967-76 T5

Part Number: IST-XMM-11500

Not Yet Reviewed

Estimated Ship Date: Feb 20, 2026 if ordered today

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Estimated Ship Date: Feb 20, 2026 if ordered today

Silver Sport Transmission Engine Crossmembers XMM-00400

Crossmember Mopar A-Body 1967-76 TKO/TKX

Part Number: IST-XMM-00400

Not Yet Reviewed

Estimated Ship Date: Feb 20, 2026 if ordered today

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Estimated Ship Date: Feb 20, 2026 if ordered today

UMI Performance - Suspension Torque Arm Crossmembers for 1982-1992 CAMARO, FIREBIRD - 2215AS-B

82-'92 GM F-Body Tunnel Mounted Torque Arm Mount w/ Loop – Fits TH350 & T5 Transmissions, Black

Part Number: UPI-2215AS-B

Not Yet Reviewed

Estimated Ship Date: Mar 17, 2026 if ordered today

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Estimated Ship Date: Mar 17, 2026 if ordered today

UMI Performance Solid Motor Mounts 90059

Motor Mounts, Frame Pad, Bolt-In, Steel, Black Powdercoated, Buick, Chevy, Oldsmobile, G-Body, Small Block, Pair

Part Number: UPI-90059

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Hellwig Frame FX Kits 11104

Frame FX Kit, GM G-Body, Steel, Natural, Hellwig, Frame Rail Brace, Each

Part Number: HEL-11104

4.17 out of 5 stars ( 6 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

UMI Performance Front Reinforcement Braces 3053-B

Chassis Stiffeners, Front Reinforcement Braces, Front Lower Position, Steel, Black Powdercoated, Buick, Chevrolet, Oldsmobile, Pontiac, Each

Part Number: UPI-3053-B

5.0 out of 5 stars ( 8 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

UMI Performance Front Reinforcement Braces 3053-R

Chassis Stiffeners, Front Reinforcement Braces, Front Lower Position, Steel, Red Powdercoated, Buick, Chevrolet, Oldsmobile, Pontiac, Each

Part Number: UPI-3053-R

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

UMI Performance Solid Motor Mounts 90051

Motor Mounts, Frame Pads, Bolt-In, Black Powdercoated, Chevy, Small Block, Pair

Part Number: UPI-90051

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

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