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Thank you for visiting AMTuned. Home of the most powerful & reliable Audi engine builds in the Americas. Below are our featured products.

Supertech Performance Standard Size Valves for B6 / 7 Audi S4 BHF /BBK 40V 4.2L

Supertech Performance Standard Size Valves for B6 / 7 Audi S4 BHF /BBK 40V 4.2L

Supertech Performance Standard Size Valves for B6 / 7 Audi S4 BHF /BBK 40V 4.2L

$969.95

AMTuned Bespoke Turbo Package for B7 RS4 4.2L Vehicles

AMTuned Bespoke Turbo Package for B7 RS4 4.2L Vehicles

AMTuned Bespoke Turbo Package for B7 RS4 4.2L Vehicles

From $26,995.95

AMTuned Bespoke Turbo Package for Audi B6 B7 S4 4.2L With Installation

AMTuned Bespoke Turbo Package for Audi B6 B7 S4 4.2L With Installation

AMTuned Bespoke Turbo Package for Audi B6 B7 S4 4.2L With Installation

From $35,295.00

Audi 3.2L Stroker Kit for 3.0 EA837 Supercharged Engines

Audi 3.2L Stroker Kit for 3.0 EA837 Supercharged Engines

Audi 3.2L Stroker Kit for 3.0 EA837 Supercharged Engines

$3,895.95

Audi 4.2 32 Valve R8, RS4, S5 13:1 Compression Piston Set

Audi 4.2 32 Valve R8, RS4, S5 13:1 Compression Piston Set

Audi 4.2 32 Valve R8, RS4, S5 13:1 Compression Piston Set

$1,999.95

AMTuned Cylinder Head Rebuild for Audi B6 / B7 S4 4.2L

AMTuned Cylinder Head Rebuild for Audi B6 / B7 S4 4.2L

AMTuned Cylinder Head Rebuild for Audi B6 / B7 S4 4.2L

From $1,595.00

Audi 4.2L 32 Valve BNS / BYH / CAUA (B7 RS4 / Gen1 R8 V8 / B8 S5) Connecting rod & Piston Package

Audi 4.2L 32 Valve BNS / BYH / CAUA (B7 RS4 / Gen1 R8 V8 / B8 S5) Connecting rod & Piston Package

Audi 4.2L 32 Valve BNS / BYH / CAUA (B7 RS4 / Gen1 R8 V8 / B8 S5) Connecting rod & Piston Package

$4,495.95

Re-Machined Mechanical Cam Sprocket (Pair) exchange program for Audi S4 B6 B7 4.2L

Re-Machined Mechanical Cam Sprocket (Pair) exchange program for Audi S4 B6 B7 4.2L

Re-Machined Mechanical Cam Sprocket (Pair) exchange program for Audi S4 B6 B7 4.2L

From $349.99

Audi 4.2L 40V BHF / BBK / BAS (B6 / 7 S4 & C5 Allroad) Connecting Rods For Factory Pistons

Audi 4.2L 40V BHF / BBK / BAS (B6 / 7 S4 & C5 Allroad) Connecting Rods For Factory Pistons

Audi 4.2L 40V BHF / BBK / BAS (B6 / 7 S4 & C5 Allroad) Connecting Rods For Factory Pistons

$1,145.95

Audi 3.0L Supercharged EA837 (B8/8.5 S4, SQ5, A6, A7) Piston Package

Audi 3.0L Supercharged EA837 (B8/8.5 S4, SQ5, A6, A7) Piston Package

Audi 3.0L Supercharged EA837 (B8/8.5 S4, SQ5, A6, A7) Piston Package

$1,595.95

AMTuned Felt Hone for Alusil Engines W/ Sunnen AN-30 Silicon Compound

AMTuned Felt Hone for Alusil Engines W/ Sunnen AN-30 Silicon Compound

AMTuned Felt Hone for Alusil Engines W/ Sunnen AN-30 Silicon Compound

$169.95

AMTuned Electronic Timing Solenoid Kit for B6 B7 S4 4.2L

AMTuned Electronic Timing Solenoid Kit for B6 B7 S4 4.2L

AMTuned Electronic Timing Solenoid Kit for B6 B7 S4 4.2L

$279.95

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