M4 Exhaust Full System with Black GP Canister - SU9152-GP Shock Absorber Eliminating the standard automatic variable

Eliminating the standard automatic variable velocity stacks and replacing them with our unique fixed two-tier velocity stack system has resulted in some impressive gains

This produces the best material compaction and smoothest surface finish

The 14-mm stem increases flowability

390 TLS-QSXi-D-DCS-107

M4 Exhaust Full System with Black GP Canister - SU9152-GP Shock Absorber Eliminating the standard automatic variable304 Stainless Tubing Ceramic Coated GP Canister Removes Catalytic Converter and SET Valve Stock 93db@ 7,000 rpm M4 db 113 @ 7,000 rpm Saves 11. 6 lbs Over Stock System Includes M18 and M12 O2 Bungs Stock Max Horsepower 171. 42 @ 12,760 rpm M4 Max Horsepower 176. 55 @ 12,780 rpm (All dyno numbers are on bone stock motorcycle with pump gas) Comes Pre installed with Q1 Quiet Insert Stage 2 Q3 Quiet Insert Sold Separate