Builder's Exhaust Pipe Kit

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5 Star Rating
(5) See Reviews


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Due to CARB restrictions, this product is not available for sale in California.

Overview: The Biltwell Builder’s Exhaust Kit has everything you need to fabricate a set of custom straight pipes for your V-Twin. Four sets of stock Harley header flanges plus a pair of STD flanges are included with every kit. Two each 2-1/2-inch and 3-1/2-inch radius U-bends are included with the kit, plus a generous quantity of straight and bent tubing, flat fishtails and trumpet tips for customization. Material is 1-3/4-inch O.D. x 16-gauge rolled mild steel.

• Pre-bent tubing and ready-made flange kit for custom exhaust system fabrication
• 1-3/4-inch O.D. 16-guage rolled high-tensile steel tubing
• Five sets of exhaust flanges included: Ironhead, Evo, STD, Shovelhead, Panhead
• Two 3.5-inch radius U-bends with straights
• Two 2.5-inch radius U-bends with straights
• Two 16-inch-long straight sections with flattened tips
• Two 6-inch-inch long straight sections with Trumpet flares
• Two 45-degree bends with slash cut tips

Surface Finish: Builder's Pipe Kits are pre-polished raw mild steel and oil-coated. Clean and prep before welding.

Disclaimer: The California Air Resources Board (“CARB”) does not permit the use of aftermarket emissions-related part(s) that alter the performance of OEM emissions-related devices unless CARB has issued an Executive Order, other than on racing vehicles on closed courses. Check your local laws and manufacturer’s information.

Product Video

David Paniagua
5 Star Rating

04/05/2013 09:20am

Great product. More than enough tubing to whip up a set of pipes. Clean starting point. I made CHOLO pipes and still have enough to make some high and tights.


Diego Perez
5 Star Rating

07/17/2012 10:48am

Excellent materials they are expertly packaged, including each tubing in its own plastic bag with oil to prevent rust and all the curves and straight tubing to make some sick pipes!


Alex B.
5 Star Rating

04/12/2012 01:07pm

All that you need for a diy sick set of pipes. Very satisfied.


Tom Rose
5 Star Rating

10/09/2010 09:13pm

Got a case of beer, a radical idea, one night, and some welding skills? This is your huckleberry.


trent reker
5 Star Rating

10/07/2010 10:02am

we got these for our xs650 project, the "freedom or death machine." the packaging was great, the pipes were in perfect shape, the quality was as you would expect from biltwell, and there was much more than we needed for us to make a tight 2-into-1.

definitely recommended.