SP Concepts Exhaust System for 2006-2017 Harley-Davidson Dyna

SP Concepts Exhaust System for 2006-2017 Harley-Davidson Dyna

SP Concepts is known for these high-and-tight 2-into-1 full exhaust systems developed for Harley-Davidson Dyna motorcycles. Like most 2-into-1 pipes, performance is key. With differently-staged stepped head pipes and different mufflers and cores selected to match the head pipes, SP systems promote exhaust velocity by sweating the details.

• Full stainless steel construction
• TIG-welded
• Header collars are machined of stainless steel
• Accepts 12mm or 18mm oxygen sensors; adapters included
• Hardware kit includes mount bracket, bolts, speed nuts, and adapters
• Heat shields for this exhaust are available separately
• Choose your finish
  • Black—satin black high temperature ceramic exhaust coating
  • Stainless—brushed and uncoated; will turn varying shades of gold with exposure to the heat of engine exhaust
  • Black Onyx—the same black ceramic coating used on the black systems, but taped to reveal exposed (raw) weld joints and resultant heat signature from the welding process
• Choose your system type
  • Lane Splitter 
    • 4" rolled cone muffler with 2 1/4" perforated baffle for lots of torque and maximum volume that's often described as the "raspy" pipe in the SP lineup
    • .065" stainless steel head pipes step up from 1 3/4" to 1 7/8" and enter the muffler through a final 2" stepped section
    • A solid choice for unmodified engines or engines with light bolt-on power-adders
    • Shortest exhaust overall length; lots of bark as a result
  • Big Bore
    • 4 1/2" rolled cone muffler with stepped 2 1/4" to 2 1/2" perforated baffle supports the high exhaust flow of large-displacement engines
      
    • Best choice for highly-modified engines
    • Shortest exhaust overall length and loudest exhaust; higher compression ratios and increased displacement will both affect sound
• Choose your header style
  • Standard Stepped
    • .065" stainless steel head pipes step up from 1 3/4" to 1 7/8" and enter the muffler through 2" sections
  • Works Edition
    • The same construction materials and design as the Standard header, but bends are created from pie-cut sections that have been hand-TIG-welded for the competition look

No matter what system you choose, SP pipes also shed weight when you remove your factory exhaust. And of course, the appearance is really a showstopper. People will stop to look at—and hear—your motorcycle. 

The exhaust will accept either 12mm or 18mm oxygen sensors; adapters are included so you can use either OE or aftermarket sensors as required by your tuning setup. The mounting bracket and hardware are included. Exhaust spring clips are not included; they can be purchased separately.  Exhaust gaskets are not included and should be replaced every time an exhaust system is removed; they also can be purchased separately. Heat shields for SP Concepts exhaust systems are available separately.

When picking an exhaust type, let your modifications be your guide. If you're going to stick mostly with bolt-on engine upgrades to stock engine internals, the Lane Splitter is the correct exhaust system to select. If you're considering aggressive head work, a radical camshaft, or big increases in bore or stroke, you may want to consider the Big Bore instead. On the fence? Definitely err on the side of a smaller-bore exhaust.