SP Concepts Big Bore Performance Exhaust m8 softail Available for both dual-cable and

Available for both dual-cable and Throttle-By-Wire applications

inner steel sleeves and heavy duty cup washers

But there's one area many riders immediately notice

1991 - FXRS-SP Low Rider Sport

and a clean OEM-plus appearance

SP Concepts Big Bore Performance Exhaust m8 softail Available for both dual-cable andFor Harley Davidson M8, Twin Cam, Dyna, FXR & Bagger Models The SP Concepts Big Bore 4. 5 Exhaust is built for riders who demand real horsepower gains, hard hitting torque, and race proven durability. Designed to support everything from mildly built motors to full big bore monsters, this system delivers strong bottom to mid range power while flowing enough air to support engines from 88 all the way up to 143 when properly tuned. Handcrafted in the USA