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Vance & Hines Black Big Radius 2-into-1 Exhaust System - 48003

  • Part #: 4403700
  • Manufacturer Part #: 48003
This item is no longer available

Overview of Vance & Hines Black Big Radius 2-into-1 Exhaust System - 48003

Will fit FXD/FXDC/FXDL/FXDWG if passenger pegs are removed
  • Vance & Hines is changing the way riders look at 2-into-1 exhaust systems
  • Viewed traditionally as the kind of pipe designed solely for performance, Big Radius 2-into-1 breaks the mold and delivers white-knuckle performance with big style that is winning over the motorcycle public
  • Incorporates blue-proof technology across the entire length of the pipe
  • Big Radius 2-into-1 will keep its showroom finish whether at the dragstrip or on the boulevard
  • Includes mounts for factory O2 sensors
  • Removable baffle
  • Made in the U.S.A.

Included Items:
(1) Front heat shield
(1) Rear heat shield
(1) Muffler heat shield
(1) Bracket
(1) Header
(1) Nylon cable tie
(1) Nut plate
(3) 5/16 in. flat washers
(2) #56 hose clamps
(7) #20 hose clamps
(1) 437-P foot peg spacer
(2) 5/16 x 5/8 in. flange bolts
(2) 3/8 x 1-3/4 in. button head bolts
(3) 5/16 x 1-1/2 in. hex bolts
(1) 1-1/16 x 9/16 in. spacer

NOTE: Not all products are legal for sale or use on pollution controlled vehicles. Check your local laws and the manufacturers information

NOTE: Installation of a new exhaust system may change your motorcycles fuel-air mixture requirements. Please consult the manufacturer directly with questions regarding any modifications that may need to be made during, or after installing their product. If a jet kit or EFI controller is recommended please see the Intake/Fuel section for products available

NOTE: There is no warranty on exhaust pipes and mufflers with regard to any discoloration. Discoloration (blueing) is the result of tuning characteristics, cam timing, carburetor jetting, overheating, etc., and is not caused by defective manufacturing. See the CHEM/LUBES category for products that will help prevent or remove blueing.

The Air Resources Board (ARB) does not permit the use of aftermarket emission-related parts that alter the air/fuel ratio of an emission-controlled vehicle. Due to these legal restrictions this part cannot be shipped to California.

Specs for Vance & Hines Black Big Radius 2-into-1 Exhaust System - 48003

Style - Exhaust Tip Radius/Curve Pipe
Type - Exhaust 2-Into-1 System
Units Each
Weight 30.35 lbs

Specs for Vance & Hines Black Big Radius 2-into-1 Exhaust System - 48003

Style - Exhaust Tip Radius/Curve Pipe
Type - Exhaust 2-Into-1 System
Units Each
Weight 30.35 lbs

Fitment for Vance & Hines Black Big Radius 2-into-1 Exhaust System - 48003

See if this part fits your ride

Part 4403700 fits the following machines

Harley-Davidson
  • 2011 Harley-Davidson Dyna Fat Bob - FXDF
  • 2010 Harley-Davidson Dyna Fat Bob - FXDF
  • 2009 Harley-Davidson Dyna Fat Bob - FXDF
  • 2008 Harley-Davidson Dyna Fat Bob (EFI) - FXDF
  • 2009 Harley-Davidson Dyna Low Rider - FXDL
  • 2008 Harley-Davidson Dyna Low Rider (EFI) -FXDL
  • 2007 Harley-Davidson Dyna Low Rider (EFI) -FXDL
  • 2006 Harley-Davidson Dyna Low Rider Injected - FXDL I
  • 2011 Harley-Davidson Dyna Street Bob - FXDB
  • 2010 Harley-Davidson Dyna Street Bob - FXDB
  • 2009 Harley-Davidson Dyna Street Bob - FXDB
  • 2008 Harley-Davidson Dyna Street Bob (EFI) - FXDB
  • 2007 Harley-Davidson Dyna Street Bob (EFI) - FXDB
  • 2010 Harley-Davidson Dyna Super Glide - FXD
  • 2009 Harley-Davidson Dyna Super Glide - FXD
  • 2008 Harley-Davidson Dyna Super Glide (EFI) - FXD
  • 2007 Harley-Davidson Dyna Super Glide (EFI) - FXD
  • 2011 Harley-Davidson Dyna Super Glide Custom - FXDC
  • 2010 Harley-Davidson Dyna Super Glide Custom - FXDC
  • 2009 Harley-Davidson Dyna Super Glide Custom - FXDC
  • 2008 Harley-Davidson Dyna Super Glide Custom (EFI) - FXDC
  • 2007 Harley-Davidson Dyna Super Glide Custom (EFI) - FXDC
  • 2006 Harley-Davidson Dyna Super Glide Custom Injected - FXDC I
  • 2006 Harley-Davidson Dyna Super Glide Injected - FXD I
  • 2011 Harley-Davidson Dyna Wide Glide - FXDWG
  • 2010 Harley-Davidson Dyna Wide Glide - FXDWG
  • 2008 Harley-Davidson Dyna Wide Glide (EFI) - FXDWG
  • 2007 Harley-Davidson Dyna Wide Glide (EFI) - FXDWG
  • 2006 Harley-Davidson Dyna Wide Glide Injected - FXDWG I
  • 2006 Harley-Davidson Street Bob Injected - FXDB I
  • 2006 Harley-Davidson Super Glide Injected - FXD I 35

Big Radius 2-into-1 Exhaust System - 48003

4 out of 11 reviews
Fitment:
Sound:
soft loud
Loud
Finish:
Performance:


Fitment:
Sound:
soft loud
Loud
Finish:
Performance:

Great sound!!

I teamed this exhaust with the V02 intake and the V&H Fuekpak. So far loving the sound and performance. Originally installed without the baffles as i was looking for alot of sound. I quickly realized that it was too loud! Reinstalled the baffles and reset the Fuelpak accordingly. Sounds great now!! Only gave 4 stars on the fitment as the heat shield did not line up quite as neatly as expected even after multiple readjustments.

Review By:

from Colorado

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Fitment:
Finish:
Performance:

Rear cover welds break

I have a 2011 Fat Bob and purhased this pipe at 1000 mi. Rear cover clamp welds broke and the pipe cracked after 1200 more mi. Vance & Hines were very quick to send a new cover no charge. It lasted about 4 weeks before I had the same problem with the welds no crack in pipe. At the same time I purchased the V02 air cleaner with theDrak cover which the welds have failed on the Drak cover. Very dissappointed. I do ride daily and the air cleaner cover made it to 5000 mi. and out of V&H warrenty of 3months. One last note Pipes make it hard to check oil hot you wil need gloves.

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Fitment:
Sound:
soft loud
A Little Loud
Finish:
Performance:
Images for this Review:

FXDF Big Radius 2:1 Exhaust

Vance & Hines made an excellent product with the Big Radius 2:1 exhaust system for HD Fatbob. Fit is excellent; nothing heavy to wield around and the piece matched cylinder heads with little effort. Finish was a little on the fragile side (my opinion) and scratched easier than I like when installing heat shield clamps. Installation was about an hour and a half, but I tend to obcess at attempting to achieve factory look. HINT: hardest part was attempting to install shield clamps by myself... a second set of hands to help start bands will save lots of time. Performance is very good; (with new map, and Stage 1 air filter) engine seems smoother, and very quick on acceleration. Exhaust is about 30% louder than stock SE 'double barrel' setup and also 25 lbs lighter. Cosmetics are superb with hot performance.

Review By:

from Knoxville, TN

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Fitment:
Finish:
Performance:

Great exhaust, wrong bracket

Received with wrong bracket but made it work and lovin it

Review By:

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Fitment:
Sound:
soft loud
Loud
Finish:
Performance:

V&H 2-1 Big Radius "Black Finish"

I ordered the "black finish" Big Radius 2-1 from Denniskirk it arrived within a week. I removed the old and installed the new V&H exhaust on my 2010 Harley Fat Bob everything fit perfect and lined up easy I would say a 2.5 hour job alone. Like every one else stated the black finish is pretty soft at first it seems to get tougher after you run the bike some and the exhaust gets hot a few times. I gave the finish a 4 star becuase that is about the only thing I think V&H could do better on. Other than that the exhaust sounds great,looks great,fits great, and I love the deep tone it has sound is very mean. I have had several people ask me what upgrades I did to the engine just because the exhaust sounds like the bike is on steriods not your everyday loud high pitch poping exhaust sound. Be warned this is not a quiet exhaust if that is your goal. I didn't expect this exhaust to be this loud after reading some reviews I was expecting something medium loudness with alttle deeper tone. I would say at idel its medium but when you trottle the bike it jumps up there to medium/high not crazy loud like short shots big radius 2-2 but you can hear it and the family next door will hear you take off 100% for sure. Overall I am very pleased with the sound and look of this system it was alittle louder than I expect at first. I was looking at buying a quiet baffle but after driving now for a couple of weeks it sounds perfect to me so I am not changing a thing.

Review By:

from OKC,OK

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Fitment:
Sound:
soft loud
Loud
Finish:
Performance:

Great Exhaust

These pipes are absolutely perfect in every way, the fitment was perfect on my 2010 Fatboy Lo, looks awsome and IMO has a really good balance of sound, not super loud but just right. These pipes combined with the ventilator intake and SE race tuner gave a good incresae in preformance. Like the previous review stated the finish is easily scratched, other than that there perfect.

Review By:

from Salyersville, KY

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Fitment:
Sound:
soft loud
Loud
Finish:
Performance:

Great looking and sounding pipes.

I received my order in 3 days, so kudos to DK. When I opened the box one of the heat shields finish had been beaten off. It didn't happen during shipping (the box was perfect), so it must've come from V&H that way. DK promptly sent me a new one, along with a prepaid return label. It sounds great, not drag pipe loud (thankfully). It does produce a bit of a whistle sound, but it can only be heard while sitting on the bike. You couldn't ask for a better looking pipes on a Fat Bob. I did have to pull up on the end of the pipes to get the bolts lined up in the support bracket. These same 2 bolts became a little loose after a few hundred miles, even with loc-tite. You can't go wrong with this system.

Review By:

from Shenandoah, IA

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Fitment:
Sound:
soft loud
Loud
Finish:
Performance:

Vance & Hines Stands by their product

I put these pipes on my 2009 Dyna Fat Bob...Pipes sound great and give the bike a Awesome look. I had trouble with the weld on the heat shield 6 months after I bought the pipes. Vance & Hines took care of the problem and sent me a new heat shield free of charge. I'll always have Vance & Hines on my Hog.

Review By:

from Fort Wayne, IN

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Instructions and Manuals for Vance & Hines Black Big Radius 2-into-1 Exhaust System - 48003

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