Most all SPC exhaust are in stock or now available upon request 530-561-2052.
SP Concepts M8 Softail - Big Bore 4.5 Features:
- FOR ST MODELS PLEASE INCLUDE YOUR BIKE ON THE CART PAGE FOR A FREE BAG MOUNTING BRACKET
- 4.5” HIGH FLOW PERFORMANCE ROLLED CONE MUFFLER WITH STEPPED BAFFLE FROM 2 ¼ TO 2 ½ INCHES. INCREASES BOTTOM TO MID RANGE TORQUE AND HORSEPOWER ON ALL MOTORS. TUNED PROPERLY CAN ACCOMMODATE 88" TO 143".
- 065 STAINLESS STEEL HEADERS, STEPPED FROM 1 ¾” TO 1 7/8” TO 2” AT THE COLLECTOR
- HAND TIG WELDED FROM TOP TO BOTTOM
- MACHINED STAINLESS STEEL HEADER COLLARS
- 18MM O2 BUNGS WITH 12MM ADAPTERS, ALLOWS FOR STOCK OR AUTOTUNE SENSORS
- COMPLETE HARDWARE KIT WITH EVERYTHING YOU NEED TO MOUNT IT UP
Stainless Powered Concepts is a company made up of two highly passionate individuals with a combined 25 years of motorcycle exhaust experience. The relationships and the knowledge they have gathered afford them the luxury of knowing what to do, as well as what not to do.
SP Concepts delivers high-quality American-made performance products with innovative designs and back them with the best customer care in the industry.
What is the differences between the Big Bore vs. the LaneSplitter?
The Big Bore has stepped headers, 1 3/4 to 1 7/8 to 2” at the collector. It has a reversion chamber after the collector, a stepped baffle of 2 1/4 - 2 1/2”, and the muffler body is 4.5” in diameter. It creates a really deep throaty tone and makes great power across the board but especially bottom to mid “useable” TQ and HP. It works well on stock motors and is capable of handling larger built motors as well. You will have a deep tone at idle, under load, and on decel.
The LaneSplitter still uses the same stepped headers, has a baffle of 2 1/4 all the way through and the muffler body is 4” which is an industry standard. The muffler creates a similar deep tone but definitely has a bit more raspiness to it. If you’re looking for the louder one, this would be it. The LaneSplitter still makes great numbers across the board but falls a bit shorter than the Big Bore. Works great on stock motors but will be limited in the larger motor build category. You will have deep tone with a bit of raspiness at idle and on decel. A deep throaty tone under load.
How do I install my exhaust?Watch SP Concepts quick install video to guide you through the installation process. Click Here
