SP CONCEPTS 99-05 DYNA EXHAUST- BIG BORE 4.5" FRAME AND CHASSIS_INVISI-VIN Fits well with Arlen Ness

Fits well with Arlen Ness Big Suckers Air Filter

S&S roller rocker arms

rear cylinder offset

Suitable for standard

shift shaft bushing & alignment dowels

SP CONCEPTS 99-05 DYNA EXHAUST- BIG BORE 4.5" FRAME AND CHASSIS_INVISI-VIN Fits well with Arlen Ness4. 5 HIGH FLOW PERFORMANCE ROLLED CONE MUFFLER WITH STEPPED BAFFLE FROM 2 TO 2 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 TO 1 7 8 TO 2 AT THE COLLECTOR CNC BILLET ALUMINUM ENDCAP HAND TIG WELDED FROM TOP TO BOTTOM MACHINED STAINLESS STEEL HEADER COLLARS 18MM O2 BUNGS WITH 12MM ADAPTERS, ALLOW FOR STOCK OR AUTOTUNE SENSORS COMPLETE