Tubular Frame Re-enforcement X-Members by Progressive Automotive

Tubular X-member for 1955-57 Chevy
Tubular X-member for 1955-57 Chevy

Old frames with riveted or no crossmembers can flex due to elongation of the rivet holes. This issue becomes more pronounced when modern engines with higher horsepower are installed, leading to increased frame flex under torque. Progressive Automotive offers specially designed X-members with transmission cross members that help eliminate the flex caused by age and increased power.

Our X-members are designed for either automatic and manual transmissions. Each X-member includes a steel, bolt-in transmission mount, allowing for easy removal from the bottom without the need to pull the motor from the vehicle.

Top and bottom side tubes are formed as one piece, as opposed to welded square or rectangular tubes. This design approach eliminates the chance of stress cracks that can occur, ensuring greater strength and durability.

Their X-members are also designed to allow for the passage of 3″ exhaust with a half-inch clearance. It’s worth noting that the availability of space for exhaust may be limited when underfloor pedal assemblies are used.

If your vehicle isn’t listed in their offerings, contact us for our X-member Tech sheet.

Progressive Automotive takes pride in manufacturing their products at their shop in Baltimore, Ohio, U.S.A. emphasizing their commitment to quality and craftsmanship.

Boxing Plates for C-channel style frame rails can be found here:

Brake and Brake/Clutch Pedal Assemblies with Booster mounts can be found here:

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Optional items are listed at the bottom of this page

 

*Tubular X-member kits, include:

(2) X-member sides, assembled

(1) Steel trans. Mount with mounting hardware

(1) Rear connector

and either

(1) Straight connector &  Drop connector

or

(1)  K- connector

X-Member With K-Connector, as shipped
X-Member With K-Connector, as shipped

  Connector tube are coped (notched) for fit and marked on the sides for alignment.

Chevrolet/G.M.C.

1931-32 Chevy car/1931-33 truck                                                                                                     

For Automatic Transmissions                          XT-CA-AT      $559

For Manual Transmissions                              XT-CA-MT     $609

Automatic Tubular X-member for 1931-32 Chevy car/1931-33 truck
Automatic Tubular X-member for 1931-32 Chevy car/1931-33 truck

1933 Chevy Master/Standard car                               

For Automatic Transmissions                          XT-CB-AT       $559

For Manual Transmissions                              XT-CB-MT      $609

 

1934 Chevy Master                                                                              

For Automatic Transmissions                          XT-CC-AT       $559

For Manual Transmissions                              XT-CC-MT      $609

XT-CC-MT shown, Right Hand Drive version
XT-CC-MT shown, Right Hand Drive version

1934-35 Chevy Standard                                                                                                       

For Automatic Transmissions                          XT-CD-AT       $559

For Manual Transmissions                              XT-CD-MT      $609

Automatic Tubular X-member for 1934-35 Chevy Standard
Automatic Tubular X-member for 1934-35 Chevy Standard

1935 Master/1936 Chevy Standard                                                                                                   

For Automatic Transmissions                          XT-CE-AT       $559

For Manual Transmissions                              XT-CE-MT      $609

Automatic Tubular X-member for 1935 Chevy Master/ 1936 Chevy Standard
Automatic Tubular X-member for 1935 Chevy Master/ 1936 Chevy Standard

1936 Chevy Master                                                                                                  

For Automatic Transmissions                          XT-CF-AT       $559

For Manual Transmissions                              XT-CF-MT      $609

Manual Tubular X-member for 1936 Chevy Master
Manual Tubular X-member for 1936 Chevy Master

1937-39 Chevy                                                                                           

*For Automatic Transmissions                          XT-CG-AT       $559

*For Manual Transmissions                              XT-CG-MT      $609

      *Recommended (1) 7″ & (1) 14″ Top Hat Frame re-enforcement plates can be found here

Automatic Tubular X-member for 1937-39 Chevy
Automatic Tubular X-member for 1937-39 Chevy

1940 Chevy                                                                                           

*For Automatic Transmissions                          XT-CH-AT       $659

*For Manual Transmissions                              XT-CH-MT      $689

     *Recomended (1) 7″ & (1) 14″ Top Hat Frame re-enforcement plates can be found here

Automatic Tubular X-member for 1940 Chevy
Automatic Tubular X-member for 1940 Chevy

1941-48 Chevy                                                                                           

*For Automatic Transmissions                          XT-CI-AT       $659

*For Manual Transmissions                              XT-CI-MT      $689

     *Recommender (1) 7″ & (1) 14″ Top Hat Frame re-enforcement plates can be found here

Automatic Tubular X-member for 1941-48 Chevy
Automatic Tubular X-member for 1941-48 Chevy

1949-54 Chevy                                                                                           

*For Automatic Transmissions                          XT-CK-AT       $579

*For Manual Transmissions                              XT-CK-MT      $609

     *Recommended (1) 7″ & (1) 14″ Top Hat Frame re-enforcement plates can be found here

Automatic Tubular X-member for 1949-54 Chevy
Automatic Tubular X-member for 1949-54 Chevy

1955-57 Chevy                                                                                           

For Automatic or Manual Transmissions                          XT-CJ             $579

Tubular X-member for 1955-57 Chevy
Tubular X-member for 1955-57 Chevy

1934-36 Chevy truck                                                                                                

For Automatic Transmissions, Short Bed         XT-CTB-AT-SB       $559

For Manual Transmissions, Short Bed             XT-CTB-MT-SB      $589

For Automatic Transmissions, Long Bed          XT-CTB-AT-LB        $559

For Manual Transmissions, Long Bed              XT-CTB-MT-LB       $629

Automatic Tubular X-member for 1934-36 Chevy truck
Automatic Tubular X-member for 1934-36 Chevy truck

1937-40 Chevy truck                                                                                                

For Automatic Transmissions, Short Bed         XT-CTC-AT-SB       $559

For Manual Transmissions, Short Bed             XT-CTC-MT-SB      $589

For Automatic Transmissions, Long Bed          XT-CTC-AT-LB        $599

For Manual Transmissions, Long Bed              XT-CTC-MT-LB       $629

1941-46 Chevy truck                                                                                                

For Automatic Transmissions, Short Bed         XT-CTD-AT-SB       $559

For Manual Transmissions, Short Bed             XT-CTD-MT-SB      $589

For Automatic Transmissions, Long Bed          XT-CTD-AT-LB       $599

For Manual Transmissions, Long Bed              XT-CTD-MT-LB       $629

Automatic Tubular X-member for 1941-46 Chevy truck
Automatic Tubular X-member for 1941-46 Chevy truck

1947-55 (1st Ser.) Chevy truck                                                                                             

For Automatic Transmissions, Short Bed         XT-CTE-AT-SB       $559

For Manual Transmissions, Short Bed             XT-CTE-MT-SB      $589

For Automatic Transmissions, Long Bed          XT-CTE-AT-LB        $599

For Manual Transmissions, Long Bed              XT-CTE-MT-LB       $629

Automatic Tubular X-member for 1947-55 (1st Ser.) Chevy truck
Automatic Tubular X-member for 1947-55 (1st Ser.) Chevy truck

1955 (2nd Ser.)-59 Chevy truck                                                                                           

For Automatic Transmissions, Short Bed         XT-CTF-AT-SB       $559

For Manual Transmissions, Short Bed             XT-CTF-MT-SB      $589

For Automatic Transmissions, Long Bed          XT-CTF-AT-LB        $599

For Manual Transmissions, Long Bed              XT-CTF-MT-LB       $629

Automatic Tubular X-member for 1955 (2nd Ser.)-59 Chevy truck
Automatic Tubular X-member for 1955 (2nd Ser.)-59 Chevy truck

1963-66 Chevy/GMC truck, not for trailing arm suspension                                                                                         

For Short Bed         XT-CTG-SB       $629

For Long Bed          XT-CTG-LB        $669

Progressive Automotive 1963-66 Chevy/GMC truck X-member
1963-66 Chevy/GMC truck X-member

 

1967-72 Chevy/GMC truck, not for trailing arm suspension                                                                                         

For Short Bed         XT-CTH-SB       $629

For Long Bed          XT-CTH-LB        $669

 

Ford

1932 Ford car/1932-33 (1st Ser.) truck   

For Automatic Transmissions                          XT-FB-AT       $559

For Manual Transmissions                              XT-FB-MT      $609

1933-34 Ford car/1933 (2nd Ser.)-34 truck

For Automatic Transmissions                          XT-FC-AT       $559

For Manual Transmissions                              XT-FC-MT      $609

1935-40 Ford car/1935-41 truck                                                                                          

For Automatic Transmissions                          XT-FD-AT       $639

For Manual Transmissions                              XT-FD-MT      $689

Automatic Tubular X-member for 1935-40 Ford car/1935-41 truck
Automatic Tubular X-member for 1935-40 Ford car/1935-41 truck

1941-48 Ford car                                                                                                       

For Automatic Transmissions                          XT-FE-AT       $639

For Manual Transmissions                              XT-FE-MT      $689

Automatic Tubular X-member for 1941-48 Ford
Automatic Tubular X-member for 1941-48 Ford

1942-47 Ford truck                                                                                                   

For Automatic Transmissions, Short Bed         XT-FTE-AT-SB       $559

For Manual Transmissions, Short Bed             XT-FTE-MT-SB      $589

For Automatic Transmissions, Long Bed          XT-FTE-AT-LB        $599

For Manual Transmissions, Long Bed              XT-FTE-MT-LB       $629

Manual Tubular X-member for 1942-47 Ford truck
Manual Tubular X-member for 1942-47 Ford truck

1948-52 Ford truck                                                                                                   

For Automatic Transmissions, Short Bed         XT-FTF-AT-SB       $559

For Manual Transmissions, Short Bed             XT-FTF-MT-SB      $589

For Automatic Transmissions, Long Bed          XT-FTF-AT-LB        $599

For Manual Transmissions, Long Bed              XT-FTF-MT-LB       $629

Automatic Tubular X-member for 1948-52 Ford truck
Automatic Tubular X-member for 1948-52 Ford truck

1953-56 Ford truck                                                                                                   

For Automatic Transmissions, Short Bed         XT-FTG-AT-SB       $559

For Manual Transmissions, Short Bed             XT-FTG-MT-SB      $589

For Automatic Transmissions, Long Bed          XT-FTG-AT-LB       $599

For Manual Transmissions, Long Bed              XT-FTG-MT-LB       $629

Automatic Tubular X-member for 1953-56 Ford truck
Automatic Tubular X-member for 1953-56 Ford truck

1957-63 Ford truck                                                                                                   

For Short Bed, specify transmission         XT-FTH-SB       $559

 

1964-72 Ford truck                                                                                                   

For Short Bed, specify transmission         XT-FTI-SB       $839

Progressive Automotive XT-FTI
Progressive Automotive XT-FTI

 

Plymouth/Dodge

1933 Plymouth car/1933-35 (1st Ser.) Dodge truck

For Automatic Transmissions                          XT-PA-AT       $559

For Manual Transmissions                              XT-PA-MT      $589

Automatic Tubular X-member for 1933 Plymouth
Automatic Tubular X-member for 1933 Plymouth

1934 Plymouth car                                                                                                   

For Automatic Transmissions                          XT-PB-AT       $559

For Manual Transmissions                              XT-PB-MT      $589

1935-36 Plymouth car                                                                                             

For Automatic Transmissions                          XT-PC-AT       $559

For Manual Transmissions                              XT-PC-MT      $589

Oldsmobile

1956 Oldsmobile, for Automatic or Manual transmission       XT-O-56     $609

 

Optional Items

Vulcanized G.M transmission mount with attachment hardware            TM-RM-C      $14

Vulcanized Ford (non-Coyote) transmission mount with attachment hardware           TM-RM-F      $25

Vulcanized Ford (Coyote) transmission mount            TM-RM-FC      $59

Drive Shaft Loop kits, recommended for High horsepower vehicle       XT-DLK        $109