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APR B7 S4 4.2 Quattro Stainless Steel Cat-Back Exhaust
Part# CB100031
Price: $1,399.00

APR S4 4.2 Quattro Stainless Steel Downpipe
Part# CD100008/16
Price: $1,129.00

AWE Tuning Exhaust, B7 Audi S4
Part# AWE_Exhaust_B7_S4
Price: $1,249.00

AWE Tuning High Flow Downpipes, B6/B7 S4
Part# AWE_4.2L_downpipes
Price: $1,895.00

Carbonio Intake - B6/B7 S4 4.2L
Part# CI100015
Price: $399.00

ECS Poly Snub Mount, B6/B7 Audi A4/S4
Part# ES4665
Price: $38.99

GIAC Audi S4 4.2L Performance Software
Part# GIAC_4.2L

Price: $650.00

GIAC Handheld Flashloader (Switching Device)
Part# GIAC_Handheld
Price: $150.00

GIAC Program - Kill
Part# GIAC_Kill

Price: $50.00

GIAC Program - Race
Part# GIAC_Race

Price: $100.00

GIAC Program - Stock
Part# GIAC_Stock

Price: $50.00

GIAC Program - Valet
Part# GIAC_Valet

Price: $50.00

PES Tuning G4 MPI Supercharger Kit (Stage 1), 4.2L V8 MPI
Part# PES.G4.MPI.Stg.1

Price: $6,495.00

PES Tuning G4 MPI Supercharger Kit (Stage 1+), 4.2L V8 MPI
Part# PES.G4.MPI.Stg.1+

Price: $8,495.00

PES Tuning G4 MPI Supercharger Kit (Stage 2), 4.2L V8 MPI
Part# PES.G4.MPI.Stg.2

Price: $8,495.00

PES Tuning G4 RS4 FSI Supercharger Kit (Stage 1), 4.2L V8 RS4
Part# PES.G4.RS4.Stg1

Price: $12,995.00