Summit Racing™ Dual-Exhaust Transmission Crossmembers

4.68 out of 5 stars 585 Customer Reviews

Summit Racing™ steel transmission crossmembers allow you to run a true dual-exhaust system with most popular GM transmissions. They have a patented double-hump design, so you don't have to compromise ground clearance by running pipes under the crossmember, and they're a complete bolt-on deal—no custom fabricating or realignment is needed. The parts are made from 1/8 in. thick boxed tubing to handle the frame-twisting power of big blocks. Order the crossmember recommended for your vehicle and transmission application.

Showing In Stock Items. Show All 19 Items.

Results 1 - 19 of 19

Summit Racing™ Dual-Exhaust Transmission Crossmembers SUM-770300

Summit Racing™ Dual-Exhaust Transmission Crossmembers SUM-770300

Crossmember, Transmission, Steel, Black, GM, TH200/TH350/M-21/M-22/Powerglide/Saginaw/Super T-10, Each

Part Number: SUM-770300

4.84 out of 5 stars ( 75 )

Estimated Ship Date: Monday 11/10/2025

...Loading

Estimated Ship Date: Monday 11/10/2025

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 ( 75 )

Estimated Ship Date: Monday 11/10/2025

...Loading

Estimated Ship Date: Monday 11/10/2025

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 11/10/2025

...Loading

Estimated Ship Date: Monday 11/10/2025

Summit Racing™ Dual-Exhaust Transmission Crossmembers SUM-770302

Crossmember, Transmission, Steel, Black, TH400, 200-4R, Each

Part Number: SUM-770302

4.86 out of 5 stars ( 56 )

Estimated Ship Date: Monday 11/10/2025

...Loading

Estimated Ship Date: Monday 11/10/2025

Summit Racing™ Dual-Exhaust Transmission Crossmembers SUM-770338

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

Part Number: SUM-770338

4.89 out of 5 stars ( 18 )

Estimated Ship Date: Monday 11/10/2025

...Loading

Estimated Ship Date: Monday 11/10/2025

Summit Racing™ Dual-Exhaust Transmission Crossmembers SUM-770335

Transmission Crossmember, Steel, Black Powdercoated, Channel Frame Only, 200-4R, TH400, Each

Part Number: SUM-770335

4.55 out of 5 stars ( 20 )

Estimated Ship Date: Monday 11/10/2025

...Loading

Estimated Ship Date: Monday 11/10/2025

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 11/10/2025

...Loading

Estimated Ship Date: Monday 11/10/2025

Summit Racing™ Dual-Exhaust Transmission Crossmembers SUM-770354

Crossmember, Transmission, Steel, Black, GM, TH350, Powerglide, Muncie, Chevy, B-Body, Each

Part Number: SUM-770354

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 11/10/2025

...Loading

Estimated Ship Date: Monday 11/10/2025

Summit Racing™ Dual-Exhaust Transmission Crossmembers SUM-770373

Transmission Crossmember, Steel, Chevy, B-Body, TH400, 200R4, Each

Part Number: SUM-770373

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 11/10/2025

...Loading

Estimated Ship Date: Monday 11/10/2025

Summit Racing™ Dual-Exhaust Transmission Crossmembers SUM-770336

Transmission Crossmember, Steel, Black Powdercoated, Buick, Chevy, Oldsmobile, Pontiac, Each

Part Number: SUM-770336

4.5 out of 5 stars ( 4 )

Estimated Ship Date: Monday 11/10/2025

...Loading

Estimated Ship Date: Monday 11/10/2025

Summit Racing™ Dual-Exhaust Transmission Crossmembers SUM-770303

Crossmember, Transmission, Steel, Black, GM, TH400, Includes SUM-770307, Each

Part Number: SUM-770303

4.84 out of 5 stars ( 19 )

Estimated Ship Date: Monday 11/10/2025

...Loading

Estimated Ship Date: Monday 11/10/2025

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 11/10/2025

...Loading

Estimated Ship Date: Monday 11/10/2025

Summit Racing™ Dual-Exhaust Transmission Crossmembers for 1968-1981 CORVETTE - SUM-770321

Crossmember, Transmission, Steel, Black, GM, TH350, Chevy, Each

Part Number: SUM-770321

Not Yet Reviewed

Estimated Ship Date: Dec 30, 2025 if ordered today

...Loading

Estimated Ship Date: Dec 30, 2025 if ordered today

Summit Racing™ Dual-Exhaust Transmission Crossmembers for 1968-1981 CORVETTE - SUM-770320

Crossmember, Transmission, Steel, Black, GM, TH400/ 200-4R, Chevy, Each

Part Number: SUM-770320

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Dec 30, 2025 if ordered today

...Loading

Estimated Ship Date: Dec 30, 2025 if ordered today

Summit Racing™ Dual-Exhaust Transmission Crossmembers SUM-770322

Crossmember, Transmission, Steel, Black, GM, A-Body, TH400/ 200-4R, Each

Part Number: SUM-770322

4.52 out of 5 stars ( 21 )

Estimated Ship Date: Monday 11/10/2025

...Loading

Estimated Ship Date: Monday 11/10/2025

Summit Racing™ Dual-Exhaust Transmission Crossmembers SUM-770593

Transmission Crossmember, Tubular, Chevy Tri Five, Each

Part Number: SUM-770593

Not Yet Reviewed

Estimated Ship Date: Monday 11/10/2025

...Loading

Estimated Ship Date: Monday 11/10/2025

Summit Racing™ Dual-Exhaust Transmission Crossmembers SUM-770283

Transmission Crossmembers, Steel, Black Powdercoated, Hardtop Models Only, Buick, Chevrolet, Oldsmobile, Pontiac, TH400, Each

Part Number: SUM-770283

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 30, 2025 if ordered today

...Loading

Estimated Ship Date: Dec 30, 2025 if ordered today

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: Dec 30, 2025 if ordered today

...Loading

Estimated Ship Date: Dec 30, 2025 if ordered today

Summit Racing™ Dual-Exhaust Transmission Crossmembers SUM-770340

Crossmember, Transmission, Steel, Black, GM, Buick, Oldsmobile, Cadillac, TH400, Each

Part Number: SUM-770340

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 30, 2025 if ordered today

...Loading

Estimated Ship Date: Dec 30, 2025 if ordered today

Page 1 of 1