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Flo Pro 4"X23" Aluminized Twister Resonator/ Muffler
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$124.95
- Part Number: 51799
- Est. Ship Time: Backordered

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Backordered with no ETA (Updated 6/3/25)
4" Inlet, 4 inch outlet, 23" overall length resonator by Flo Pro.
Introducing Flo-Pro's TWISTER muffler/resonators.
Welded construction for strength & durability featuring a continuous spiral design minimizing turbulence for greater flow which increases hp over other spiral baffle designs.
Flo-Pro's Spiral design is less restrictive than glass packed designs, and the dual flow path cancels noise and creates a vacuum effect that accelerates the exhaust through the muffler.
- Race Muffler That Fits In Tight Places
- Reduces Noise To Meet Most Track Requirements
- Works as a Resonator on Noisy Diesel Applications
- Insignificant Loss Of Horsepower From Open Headers
- Great Fit For Street-Legal High Performance Vehicles
Flo Pro part number: 51799

Backordered with No ETA (Updated 6/3/25)
Item LJ500SS is currently out of stock with No ETA. (Updated 6/3/25)
5" Inlet, 5" outlet, 18&q..
$104.20
Backordered with no ETA (Updated 6/3/25)
4" Inlet, 4 inch outlet, 23" overall length resonator by Flo Pro.
Introducing Flo-Pro's TWIST..
$124.95
Flows 100GPH! Preset at 10PSIFits 2001-2010 Chevy/GM 6.6L Duramax Diesel Equipped trucks.PureFlow AirDog® manufactures and supplies AirDog® Fuel Air S..
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DISCONTINUEDThis item was replaced with a new system and the year range fitment changed. Click here to view the S6021P exhaust.How easy is it to ..
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Setting: 5100 SeriesDrive Type: 4WD Position: Rear Descriptor: Rear Lifted Height: 0-1" Quantity Per Vehicle: 2 *Collapsed Length (IN): 16.95*Extended..
$220.00
VPMAXIntercooler Boot SystemsUpgrade those weak OEM boots with our high quality silicone boots with stainless steel spring loaded T-Bolt clamps. Our s..
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Bilstein 5100 Series Steering Stabilizers utilize the same high gas pressure monotube design found in our shock absorbers, offering instantaneous resp..
$108.00
Shock is sold individually, it is recommended that shocks are replaced in pairs.
Designed for- 1994-2013 DODGE RAM 2500 4WD | 1994-2012 DODGE RAM 350..
$110.00
Street Armor 4 Inch Lap Joint Band Clamp.
Aluminized or Stainless Steel.
Part numbers:
SAC400LJ (AL)
SAX400LJS (SS)..
$29.95
With two layers of progressively finer mesh synthetic media between 100% polyurethane top and base, this high flow, “oil-free” conical performance f..
$76.00
If you own a 7.3L Powerstroke, you may already be aware of the shortcomings of the stock Cam Position Sensor (CPS). It is common for the CPS to fail c..
$79.00
Backordered with No ETA (Updated on 6/3/2025)
By Different Trend.
6" O.D. Diameter 4" I.D. Inlet
18" Length
Part nu..
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6 Inch Stainless Weld-On Exhaust Tip
4 Inch Inlet, 6 Inch Out, 15" Long.
By Flo-Pro
Part Number: 406015RAC..
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Kit includes all six Cummins factory OE fuel injection lines. Pre-Bent. Clamps not included. Fits 94-98 Dodge 5.9L Cummins only. Please enter ESN abov..
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When the Government mandated tougher emission regulation one of the ways diesel engine manufacturers lowered tailpipe emissions was to include a Diese..
$15.99
AutoMeter Ultra Lite 0-60 PSI Boost Gauge Includes 6 ft. nylon tubing with 1/8" NPT fittings. Includes 1/4'' NPT adapter/fittings. Autometer: 4305..
$97.50
Fleetguard LF3959 oil filter for the 89-02 Dodge 5.9L Cummins Diesel.
LF3959 Oil Filter, ONE ONLY.
Standard Filtration Oil Filter.
The Fleet..
$9.95
Fits, GM Duramax Diesel 2001-2005 6.6L 2500/3500. For, Extended Cab, Long/Short box, Dually. Exclude Suburban.
With 4 Bolt Converter Flange and Gaske..
$484.47
Fits, GM Duramax Diesel 2001-2005 6.6L 2500/3500. For, Extended Cab, Long/Short box, Dually. Exclude Suburban.
With 4 Bolt Converter Flange and Gaske..
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Fits, GM Duramax Diesel 2001-2007 6.6L 2500/3500. For, Extended Cab, Long/Short box, Dually.
4" Mandrel bent tubing for maximum flow
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$484.47
Fits, GM Duramax Diesel 2001-2007 6.6L 2500/3500. For, Extended Cab, Long/Short box, Dually.
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FloPro driver side and passenger side stock replacement pipes with gaskets & O2 sensor bungs. Use with EGR present vehicles.
We have re-invente..
$366.47
Fits, GM Duramax Diesel 2001-2005 6.6L 2500/3500. For, Extended Cab, Long/Short box, Dually. Exclude Suburban.
With 4 Bolt Converter Flange and Gas..
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Fits, GM Duramax Diesel 2001-2007 6.6L 2500/3500. For, Extended/Club Cab, Long/Short box. Please choose Dual Axel application above.
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Fits, Ford Powerstroke 2003-2007 6.0L F250/F350. Fits, Extended/Club Cab, Long/Short box, Dually.
4" Mandrel bent tubing for maximum flow
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Fits, Ford Powerstroke 2003-2007 6.0L F250/F350. Fits, Extended/Club Cab, Long/Short box, Dually.
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Fits, Dodge 2007.5-2009 6.7L Cummins 2500/3500, Reg Cab, Quad Cab, Mega Cab-Short & Long Box, Dually
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Fits, Ford Powerstroke 2008-2010 6.4L F250/F350. Fits, Extended/Club Cab, Long/Short box.
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$386.97
5" DPF Back single exhaust for the 2010-2012 Ram Cummins 6.7L Pickup. Kit is mandrel bent aluminized steel and comes with a polished vented tip. All h..
$507.32
Fits, Ford Powerstroke 2011-2017 6.7L F250/F350 , Automatic transmission only. Pickup, With Tip, Automatic Only, EC-CC/SB-LB-Dually
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Backordered with No ETA (Updated 6/3/25)
This polished 304 stainless turn out clamp on exhaust tip from FLO~PRO is the perfect option for your..
$179.95
Fits, Dodge 1989-1993 5.9L Cummins 2500/3500, 4x4 only. Extended/Reg Cab, Long box.
4" Mandrel bent tubing for maximum flow
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Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Universal Catalytic Converter 60121. The Universal design allows the par..
$506.00
07.5-10 GM 6.6L Duramax LMM MagnaFlow OEM Grade Federal / EPA Compliant Diesel Oxidation Catalyst MAG60504
Keep the check engine light off with Mag..
$1,083.00
The AP Exhaust 24677 4" Pre-Cut Flex Hose features a stainless steel construction with a 4" ID. This flex hose is ideal for many application..
$32.35
Black Powder Coated Bolt On 6″ x 12″ Rolled Slant
Inner Diameter: 4.00"
Outer Diameter: 6.00&..
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Backordered with No ETA (Updated 6/3/25)
This polished 304 stainless turn out clamp on exhaust tip from FLO~PRO is the perfect option for your..
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Backordered with No ETA (Updated on 6/3/2025)
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aFe Power is proud to introduce the all new diesel exhaust tip. This tip comes with a black finish and is designed to fit 3-1/2" exhaust systems...
$112.00
aFe Power is proud to introduce the all new diesel exhaust tip. This tip comes with a black finish and is designed to fit 4" exhaust systems. Wit..
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aFe POWER is proud to introduce an all new intercooled exhaust tip. This tip comes with a black finish and is designed to fit 4" exhaust systems...
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The polished aFe 304 stainless steel exhaust tip is designed to fit 4" exhaust systems. A 304 stainless steel band clamp ensures a very secure gr..
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The polished aFe 304 stainless steel exhaust tip is designed to fit 4" exhaust systems. A 304 stainless steel band clamp ensures a very secure gr..
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aFe POWER is proud to introduce an all new intercooled exhaust tip. This tip comes with a high luster polished finish and is designed to fit 4" e..
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aFe POWER is proud to introduce an all new intercooled exhaust tip. This tip comes with a polished finish and is designed to fit 4" exhaust syste..
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aFe Power is proud to introduce the all new diesel exhaust tip. This tip comes with a black finish and is designed to fit 4" exhaust systems. Wit..
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