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Roadhouse Classic 2-into-1 Exhaust System with Smooth Shield - 581309

  • Part #: 4404051
  • Manufacturer Part #: 581309
This item is no longer available

Overview of Roadhouse Classic 2-into-1 Exhaust System with Smooth Shield - 581309

  • Classic look with high-tech performance
  • Dynamonmeter-tested systems produce increased horsepower
  • Feature high-flow performance 2-into-1 merge-style collector
  • Produce a classic deep meaty exhaust note without being overly loud
  • 1 1/2 in. diameter headpipe for increased exhaust gas velocity/torque
  • Slip-fit 4 in. diameter polished chrome muffler canister with interchangeable tips (come with standard tip)
  • 2 in. removable core with high-temperature fiber packing
  • Includes detailed instruction and mounting hardware
  • Provide clearance for larger saddlebags over stock exhaust
  • No rejetting or remapping is required in most cases


  • Included Items:
    (1) Instruction Sheet
    (1) Front Head Pipe
    (1) Rear Head Pipe
    (1) Y-Collector
    (1) 4 in. Muffler Canister
    (1) Front Heat Shield
    (1) Rear Heat Shield
    (1) Short Lower Heat Shield
    (1) Muffler Bracket
    (1) Pulley
    (2) Head Flanges
    (6) 2 in. Standard Hose Clamps
    (1) 2 in. HD Hose Clamp
    (2) 5/16-18 x 3/4 in. Carriage Bolts
    (2) 5/16-18 Carriage Nuts

    2 1/2 Exhaust Tips:
    Shark fin: part number 449703
    Cadillac: part number 449704
    Standard: part number 449705

    4 in. Exhaust Tip:
    Slash: part number 449702

    NOTE: Installation of a new exhaust system may change your motorcycles fuel-air mixture requirements. Please consult the exhaust manufacturer directly with questions regarding any modifications that may need to be made during, or after, installing their product. If a jet kit or fuel processor is recommended, see the Fuel/Intake section.
    Exhaust discoloration (blueing) is caused by engine conditions such as cam timing, fuel-air mixture, operating temperature, etc. It is not the result of defective manufacturing; therefore it is not covered by any warranty. See the Chems/Lubes section for products to help remove or prevent exhaust discoloration.

Specs for Roadhouse Classic 2-into-1 Exhaust System with Smooth Shield - 581309

Finish Chrome
Style - Exhaust Tip Straight-Cut Tip
Type - Exhaust 2-Into-1 System
Units Each
Weight 28.65 lbs

Specs for Roadhouse Classic 2-into-1 Exhaust System with Smooth Shield - 581309

Finish Chrome
Style - Exhaust Tip Straight-Cut Tip
Type - Exhaust 2-Into-1 System
Units Each
Weight 28.65 lbs

Fitment for Roadhouse Classic 2-into-1 Exhaust System with Smooth Shield - 581309

See if this part fits your ride

Part 4404051 fits the following machines

Suzuki
  • 2009 Suzuki VZR1800 Boulevard M109R
  • 2008 Suzuki VZR1800 Boulevard M109R
  • 2007 Suzuki VZR1800 Boulevard M109R
  • 2006 Suzuki VZR1800 Boulevard M109R
  • 2009 Suzuki VZR1800N Boulevard M109R2
  • 2008 Suzuki VZR1800N Boulevard M109R2
  • 2009 Suzuki VZR1800Z Boulevard M109RZ Limited
  • 2008 Suzuki VZR1800Z Boulevard M109RZ Limited
  • 2007 Suzuki VZR1800Z Boulevard M109RZ Limited
4.5 / 5.0
4 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
2
2
0
0
0
Finish
5.0 / 5
Performance
4.2 / 5
Loudness
Very Quiet
Average
Very Loud
Finish
5 / 5
Loudness
Very Quiet
Average
Very Loud
Performance
5 / 5
Great Exhaust Setup
I was looking for a replacement for my Cobra Streetrods. After reading numerous positive reviews about the RH 2 into 1s, I decided to make the switch. This is the exhaust system I have been looking for - looks, finish, sound. The sound is a winner - low, soft, not tinny. It is low at idle and riding around town, but when I twist the throttle, it opens up.

The customer service, shipping, and care from Dennis Kirk are still up to their extremely high standards. I will continue to shop with DK.
January 26, 2011
Finish
5 / 5
Performance
5 / 5
These are great
I bought these because I wanted different pipes and at the time I knew nothing about Roadhouse. Now I must say their products are nothing but the best with fit and finish to be flawless. I had reason to contact them about this installation and their service was totally unbelievable. I had questions about installing this unit and talking to them made me realize I should have been purchasing their products many years earlier and far more often. If you need a good pipe look no further.
June 26, 2013
Finish
5 / 5
Loudness
Very Quiet
Average
Very Loud
Performance
4 / 5
Roadhouse 2 into 1 exhaust system.
The fit is tight. I spent the most time trying to get the front header on it fit so tight. Otherwise installation went well.

It isn't loud, but the baffles are adjustable so that can change.

With my bike this seems to have reduced low end torque but gained high end speed.
July 22, 2011
Finish
5 / 5
Loudness
Very Quiet
Average
Very Loud
Performance
3 / 5
Last one on the shelf
Older shadow.... needed to show it's age better.. quieter , more respectfull , a cleaner act. new chrome... They work..
June 8, 2011

Instructions and Manuals for Roadhouse Classic 2-into-1 Exhaust System with Smooth Shield - 581309