Flowmaster

Flowmaster 20-25 GM 2500HD 6.6L CCB FlowFX DOS Exhaust System

SKU 718111

MPN flo718111

$949.95 · In stock

Flowmaster 20-25 GM 2500HD 6.6L CCB FlowFX DOS Exhaust System
Flowmaster 20-25 GM 2500HD 6.6L CCB FlowFX DOS Exhaust System
Flowmaster 20-25 GM 2500HD 6.6L CCB FlowFX DOS Exhaust System
Flowmaster 20-25 GM 2500HD 6.6L CCB FlowFX DOS Exhaust System
Flowmaster 20-25 GM 2500HD 6.6L CCB FlowFX DOS Exhaust System
Flowmaster 20-25 GM 2500HD 6.6L CCB FlowFX DOS Exhaust System
Flowmaster 20-25 GM 2500HD 6.6L CCB FlowFX DOS Exhaust System
Flowmaster 20-25 GM 2500HD 6.6L CCB FlowFX DOS Exhaust System

Flowmaster 20-25 GM 2500HD 6.6L CCB FlowFX DOS Exhaust System

This Flowmaster® Flow FX® cat-back exhaust system for the 2020-2025 GM 2500HD/3500HD trucks with the 6.6-liter gas engine is manufactured using durable 409 stainless steel throughout and features 3.50 to dual 3.00-inch mandrel bent pipes for better exhaust gas flow, and a Flow FX "straight-through" muffler is used for a moderate sound level and maximum performance. Maximum increases on the dyno revealed +9 hp and +10 lb-ft at the rear wheels. This system exits out both sides, behind the rear wheels with 4.50-inch black ceramic tips for added style and a custom look. The system uses all the existing factory hanger locations and includes installation instructions and all necessary hardware for an easy installation that you can do at home. Backed by Flowmaster's Lifetime Limited Warranty.

Confirmed vehicle fitment
YearsMakeModelSubmodelDrive
2022–2026GMCSierra 2500 HDPro—
2020–2026GMCSierra 3500 HDSLE—
2020–2026GMCSierra 3500 HDDenali—
2020–2026GMCSierra 2500 HDDenali—
2020–2021GMCSierra 3500 HDBase—
2020–2026GMCSierra 3500 HDSLT—
2020–2026ChevroletSilverado 3500 HDLT—
2020–2026ChevroletSilverado 3500 HDHigh Country—
2020–2026GMCSierra 2500 HDSLE—
2020–2026ChevroletSilverado 2500 HDLT—
2020–2021GMCSierra 2500 HDBase—
2020–2026GMCSierra 3500 HDAT4—
2020–2026GMCSierra 2500 HDAT4—
2022–2026GMCSierra 3500 HDPro—
2020–2026GMCSierra 2500 HDSLT—
2020–2026ChevroletSilverado 2500 HDHigh Country—
2020–2026ChevroletSilverado 3500 HDWT—
2020–2026ChevroletSilverado 2500 HDLTZ—
2020–2026ChevroletSilverado 3500 HDLTZ—
2020–2026ChevroletSilverado 2500 HDWT—
2020–2026ChevroletSilverado 2500 HDCustom—
Specifications
CategoryExhaust, Mufflers & Tips
Sub-CategoryCatback
UPC090127130155
CARB ApprovedYes
Prop 65 WarningY
Special OrderYes
Weight71.6 lb
Dimensions (L×W×H)56.6 × 16.3 × 12.5 in

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