Dynomax® Performance Mufflers: Ultra Flo™ X
DynoMax® Ultra Flo™ X performance stainless steel mufflers feature 100-percent welded construction for lifelong durability. Ultra Flo™ X incorporates a 3-in.diameter X-pipe balance tube inside the muffler - promoting exhaust scavenging and equalizes flow. Each muffler uses our exclusive Continuous Roving Fiberglass (CRF) Technology to absorb unwanted interior resonance while maintaining a deep performance tone. The "Pure Unadulterated POWER" of DynoMax® Ultra Flo™ X mufflers are backed by a Limited Lifetime Warranty.

• Designed for vehicles with limited space.
• Stainless steel construction for lifelong protection.
• 100-percent welded design for maximum durability.
• 3-in. diameter internal X-pipe balance tube promotes exhaust scavenging and equalizes flow.
• CRF Technology absorbs unwanted interior resonance while maintaining a deep performance tone.

	Material	Part Number	Shell Diameter (in.)	Overall Length (in.)	Shell Length (in.)	Inlet Diameter (in.)	Oulet Diameter (in.)
		17552	4 1/2 x 9 3/4	25	20	2 1/4 (2)	2 1/4 (2)
		17553	4 1/4 x 9 3/4	25	20	2 1/2 (2)	2 1/2 (2)
		17554	4 1/4 x 9 3/4	25	20	3 (2)	3 (2)
		17555	4 1/4 x 9 3/4	25	20	3 1/2 (2)	3 1/2 (2)