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Developed from our Top Ten race muffler lineup for use on the street and strip. Utilizing Delta Flow Technology, this muffler gives the best performance to higher horsepower vehicles. The Super 40 features a black, oversize case, which keeps the resonance down while the deep outside tone says it’s a Flowmaster!

  • Works in place of any other 40 Series muffler
  • Deeper, richer tone than original 40 Series muffler
  • The choice of performance street machine/rod builders
  • Constructed of 16-gauge aluminized steel or 409S Stainless Steel
  • Fully MIG-welded for maximum durability

 

 

Super 40 Series Muffler Table

IN/OUT C/C O/C C/O O/O O/O SAME SIDE
2.25"
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Center' AND outlet_diameter = '2.25' AND inlet_position = 'Center' AND inlet_diameter = '2.25' AND description NOT LIKE '%Super 40 Muffler 409S%'
952445
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Center' AND outlet_diameter = '2.25' AND inlet_position = 'Offset' AND inlet_diameter = '2.25' AND description NOT LIKE '%Super 40 Muffler 409S%'
952446
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Offset' AND outlet_diameter = '2.25' AND inlet_position = 'Center' AND inlet_diameter = '2.25' AND description NOT LIKE '%Super 40 Muffler 409S%'
952447
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Offset' AND outlet_diameter = '2.25' AND inlet_position = 'Offset' AND inlet_diameter = '2.25' AND description NOT LIKE '%Super 40 Muffler 409S%'
952448
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Same Side' AND outlet_diameter = '2.25' AND inlet_position = 'Offset' AND inlet_diameter = '2.25' AND description NOT LIKE '%Super 40 Muffler 409S%'
2.50"
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Center' AND outlet_diameter = '2.50' AND inlet_position = 'Center' AND inlet_diameter = '2.50' AND description NOT LIKE '%Super 40 Muffler 409S%'
952545
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Center' AND outlet_diameter = '2.50' AND inlet_position = 'Offset' AND inlet_diameter = '2.50' AND description NOT LIKE '%Super 40 Muffler 409S%'
952546
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Offset' AND outlet_diameter = '2.50' AND inlet_position = 'Center' AND inlet_diameter = '2.50' AND description NOT LIKE '%Super 40 Muffler 409S%'
952547
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Opposite' AND outlet_diameter = '2.50' AND inlet_position = 'Offset' AND inlet_diameter = '2.50' AND description NOT LIKE '%Super 40 Muffler 409S%'
952548
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Same Side' AND outlet_diameter = '2.50' AND inlet_position = 'Offset' AND inlet_diameter = '2.50' AND description NOT LIKE '%Super 40 Muffler 409S%'
952549
3.00"
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Center' AND outlet_diameter = '3.00' AND inlet_position = 'Center' AND inlet_diameter = '3.00' AND description NOT LIKE '%Super 40 Muffler 409S%'
953045
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Center' AND outlet_diameter = '3.00' AND inlet_position = 'Offset' AND inlet_diameter = '3.00' AND description NOT LIKE '%Super 40 Muffler 409S%'
953046
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Offset' AND outlet_diameter = '3.00' AND inlet_position = 'Center' AND inlet_diameter = '3.00' AND description NOT LIKE '%Super 40 Muffler 409S%'
953047
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Offset' AND outlet_diameter = '3.00' AND inlet_position = 'Offset' AND inlet_diameter = '3.00' AND description NOT LIKE '%Super 40 Muffler 409S%'
953048
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Same Side' AND outlet_diameter = '3.00' AND inlet_position = 'Offset' AND inlet_diameter = '3.00' AND description NOT LIKE '%Super 40 Muffler 409S%'
953049
3.50"
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Center' AND outlet_diameter = '3.50' AND inlet_position = 'Center' AND inlet_diameter = '3.50' AND description NOT LIKE '%Super 40 Muffler 409S%'
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Center' AND outlet_diameter = '3.50' AND inlet_position = 'Offset' AND inlet_diameter = '3.50' AND description NOT LIKE '%Super 40 Muffler 409S%'
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Offset' AND outlet_diameter = '3.50' AND inlet_position = 'Center' AND inlet_diameter = '3.50' AND description NOT LIKE '%Super 40 Muffler 409S%'
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Offset' AND outlet_diameter = '3.50' AND inlet_position = 'Offset' AND inlet_diameter = '3.50' AND description NOT LIKE '%Super 40 Muffler 409S%'
853548
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Same Side' AND outlet_diameter = '3.50' AND inlet_position = 'Offset' AND inlet_diameter = '3.50' AND description NOT LIKE '%Super 40 Muffler 409S%'
409S Stainless Steel Models
2.50"
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Center' AND outlet_diameter = '2.50' AND inlet_position = 'Center' AND inlet_diameter = '2.50' AND description LIKE '%Super 40 Muffler 409S%'
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Center' AND outlet_diameter = '2.50' AND inlet_position = 'Offset' AND inlet_diameter = '2.50' AND description LIKE '%Super 40 Muffler 409S%'
852546
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Offset' AND outlet_diameter = '2.50' AND inlet_position = 'Center' AND inlet_diameter = '2.50' AND description LIKE '%Super 40 Muffler 409S%'
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Offset' AND outlet_diameter = '2.50' AND inlet_position = 'Offset' AND inlet_diameter = '2.50' AND description LIKE '%Super 40 Muffler 409S%'
852548
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Same Side' AND outlet_diameter = '2.50' AND inlet_position = 'Offset' AND inlet_diameter = '2.50' AND description LIKE '%Super 40 Muffler 409S%'
3.00"
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Center' AND outlet_diameter = '3.00' AND inlet_position = 'Center' AND inlet_diameter = '3.00' AND description LIKE '%Super 40 Muffler 409S%'
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Center' AND outlet_diameter = '3.00' AND inlet_position = 'Offset' AND inlet_diameter = '3.00' AND description LIKE '%Super 40 Muffler 409S%'
853046
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Offset' AND outlet_diameter = '3.00' AND inlet_position = 'Center' AND inlet_diameter = '3.00' AND description LIKE '%Super 40 Muffler 409S%'
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Offset' AND outlet_diameter = '3.00' AND inlet_position = 'Offset' AND inlet_diameter = '3.00' AND description LIKE '%Super 40 Muffler 409S%'
853048
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Same Side' AND outlet_diameter = '3.00' AND inlet_position = 'Offset' AND inlet_diameter = '3.00' AND description LIKE '%Super 40 Muffler 409S%'
IN/OUT D/C C/D D/D O/D
2.50"/2.50"
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Center' AND outlet_diameter = '2.50' AND inlet_position = 'Dual' AND inlet_diameter = '2.50' AND description NOT LIKE '%Super 40 Muffler 409S%'
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Dual' AND outlet_diameter = '2.50' AND inlet_position = 'Center' AND inlet_diameter = '2.50' AND description NOT LIKE '%Super 40 Muffler 409S%'
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Dual' AND outlet_diameter = '2.50' AND inlet_position = 'Dual' AND inlet_diameter = '2.50' AND description NOT LIKE '%Super 40 Muffler 409S%'
9525454
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Dual' AND outlet_diameter = '2.50' AND inlet_position = 'Offset' AND inlet_diameter = '2.50' AND description NOT LIKE '%Super 40 Muffler 409S%'
3.00"/2.50"
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Center' AND outlet_diameter = '2.50' AND inlet_position = 'Dual' AND inlet_diameter = '3.00' AND description NOT LIKE '%Super 40 Muffler 409S%'
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Dual' AND outlet_diameter = '2.50' AND inlet_position = 'Center' AND inlet_diameter = '3.00' AND description NOT LIKE '%Super 40 Muffler 409S%'
9530452
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Dual' AND outlet_diameter = '2.50' AND inlet_position = 'Dual' AND inlet_diameter = '3.00' AND description NOT LIKE '%Super 40 Muffler 409S%'
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Dual' AND outlet_diameter = '2.50' AND inlet_position = 'Offset' AND inlet_diameter = '3.00' AND description NOT LIKE '%Super 40 Muffler 409S%'
9530462
409S Stainless Steel Models
2.50"/2.50"
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Center' AND outlet_diameter = '2.50' AND inlet_position = 'Dual' AND inlet_diameter = '2.50' AND description LIKE '%Super 40 Muffler 409S%'
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Dual' AND outlet_diameter = '2.50' AND inlet_position = 'Center' AND inlet_diameter = '2.50' AND description LIKE '%Super 40 Muffler 409S%'
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Dual' AND outlet_diameter = '2.50' AND inlet_position = 'Dual' AND inlet_diameter = '2.50' AND description LIKE '%Super 40 Muffler 409S%'
8525454
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Dual' AND outlet_diameter = '2.50' AND inlet_position = 'Offset' AND inlet_diameter = '2.50' AND description LIKE '%Super 40 Muffler 409S%'
3.00"/2.50"
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Center' AND outlet_diameter = '2.50' AND inlet_position = 'Dual' AND inlet_diameter = '3.00' AND description LIKE '%Super 40 Muffler 409S%'
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Dual' AND outlet_diameter = '2.50' AND inlet_position = 'Center' AND inlet_diameter = '3.00' AND description LIKE '%Super 40 Muffler 409S%'
8530452
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Dual' AND outlet_diameter = '2.50' AND inlet_position = 'Dual' AND inlet_diameter = '3.00' AND description LIKE '%Super 40 Muffler 409S%'
SELECT Part_Number FROM fmmnew.part_sizes WHERE category2 LIKE '%Super 40 Series%' AND outlet_position = 'Dual' AND outlet_diameter = '2.50' AND inlet_position = 'Offset' AND inlet_diameter = '3.00' AND description LIKE '%Super 40 Muffler 409S%'