SP Concepts Exhaust System for 2018-Up Harley-Davidson Softail (w/ TC Bros. Mid Controls)

SP Concepts is known for high-and-tight 2-into-1 full exhaust systems. Fitting one to a motorcycle with our Pro Series mids hasn't been possible without fabrication—until now. They developed an exhaust that meshes harmoniously with Pro Series mid controls and still retains all the benefits of their top-notch construction techniques.

• Full stainless steel construction
• TIG-welded
• Header collars are machined of stainless steel
• Accepts 12mm or 18mm oxygen sensors; adapters included
• Specifically designed for Softails fitted with TC Bros. Pro Series Mid Controls
• Brushed, uncoated stainless steel will turn varying shades of gold with exposure to the heat of engine exhaust, making the finish on every system unique unto itself
• Hardware kit includes mount bracket, bolts, speed nuts, and adapters
• Stepped .065" stainless steel head pipes increase in diameter from 1 3/4" to 1 7/8" and enter the muffler through 2" sections
• Choose your system length
  • 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

Like most 2-into-1 pipes, performance is key. With stepped head pipes and different mufflers and cores selected to match the head pipes, SP systems promote exhaust velocity by sweating the details. No matter which 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.

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 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 small side.