Summit Racing™ Lightweight Transmission Crossmembers

4.85 out of 5 stars 13 Customer Reviews

Strengthen your transmission support and reduce the weight of your vehicle with Summit Racing™ lightweight transmission crossmembers. Through advanced design and ma

Strengthen your transmission support and reduce the weight of your vehicle with Summit Racing™ lightweight transmission crossmembers. Through advanced design and manufacturing, these crossmembers are stronger than standard boxed-steel transmission crossmembers, while weighing an average of 35-percent less. The crossmembers are a direct bolt-in and do not require any additional brackets or adapters to complete the installation. They also allow you to run a true dual-exhaust system with most popular GM transmissions and do not affect ground clearance. The welded design with clear powdercoat finish gives these lightweig

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Summit Racing™ Lightweight Transmission Crossmembers SUM-770521

Summit Racing™ Lightweight Transmission Crossmembers SUM-770521

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

Part Number: SUM-770521

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 11/10/2025

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Estimated Ship Date: Monday 11/10/2025

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

4.33 out of 5 stars ( 3 )

Estimated Ship Date: Monday 11/10/2025

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Estimated Ship Date: Monday 11/10/2025

Summit Racing™ Lightweight Transmission Crossmembers SUM-770520

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

Part Number: SUM-770520

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 11/10/2025

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Estimated Ship Date: Monday 11/10/2025

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 11/10/2025

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Estimated Ship Date: Monday 11/10/2025

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: Dec 30, 2025 if ordered today

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Estimated Ship Date: Dec 30, 2025 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: Monday 11/10/2025

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Estimated Ship Date: Monday 11/10/2025

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: Dec 30, 2025 if ordered today

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Estimated Ship Date: Dec 30, 2025 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: Dec 30, 2025 if ordered today

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Estimated Ship Date: Dec 30, 2025 if ordered 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: Dec 30, 2025 if ordered today

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Estimated Ship Date: Dec 30, 2025 if ordered today

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