Flowmaster · New

Flowmaster PRO 4.00 IN/4.00 OUT 20 in. Muffler

Name: Flowmaster PRO 4.00 IN/4.00 OUT 20 in. Muffler
Brand: Flowmaster
SKU: flo14020100
Price: 345.95 USD

MPN 14020100 · Store SKU flo14020100

$345.95

CHECK AVAILABILITY0 in supplier warehouses. Ask JuiceBuilt about availability.

Supplier stock checked 11/8/2026, 9:34:33 AM UTC. Adding a part does not reserve it.

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Request a return within 30 calendar days after delivery. New parts must be unopened and unused.

Shipping & returns ↗This policy does not limit rights required by law.

Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.

Product details

The Pro Series mufflers work on all applications ranging from street trucks, diesel pullers and RV pushers to every class of racing on dirt or asphalt. During development, at the dyno and track, the Pro Series mufflers consistently delivered performance that is equal to or surpasses open pipe systems, while dramatically reducing sound levels across the RPM range. Pro Series Muffler - 4.00 Center In / 4.00 Center Out - Moderate Sound Flowmaster Pro Series Muffler

Manufacturer fitment & guides

Check 14020100 against the manufacturer’s application information below.

Part-specific notes

California Proposition 65: Y

Manufacturer documents

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What is the return policy?

Request a return within 30 calendar days after delivery. New parts must be unopened and unused.

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