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fused-dual-layer design (now widely copied) combined performance and protection
Speedmaster 800 2003-2005
Rise: 3-7/8"
Also includes adapters for converting 1953-'84 style hydraulic lifters to non-adjustable solids
SP Concepts SPC-6-003-WE 4.5" Works Edition Big Bore 2-1 Exhaust Stainless Steel for Dyna 99-05 fused-dual-layer design (now widely copied)Features & Benefits: * 'Works Edition' Precisely pie cut and TIG welded back together by hand. A meticulously painstaking process, but the results are a work of art. * 4. 5in. 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 88in. to 143in.. * 065 stainless steel headers stepped from 1 in. to 1 7 8in. to 2in. at the