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Diamond Eye Performance - High-Quality Exhaust Systems

Norcal Diesel Performance proudly offers Diamond Eye Performance, a trusted name in aftermarket exhaust systems for diesel and gas trucks. Known for their precision-engineered exhaust kits, downpipes, and mufflers, Diamond Eye Performance products are designed to improve airflow, boost horsepower, and enhance fuel efficiency. Their exhaust systems are available in aluminized steel and stainless steel options, providing durability and performance tailored to your needs.

Manufactured in the USA with a commitment to quality, Diamond Eye Performance exhausts are rigorously tested to ensure optimal fitment and long-lasting reliability. Whether you’re upgrading your Cummins, Duramax, or Powerstroke engine for towing, racing, or daily driving, Norcal Diesel Performance offers a wide selection of Diamond Eye products to help you achieve peak performance. Explore our inventory today and experience the difference that Diamond Eye Performance can make!

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Items 1-60 of 129

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Exhaust - Exhaust Systems - Diamond Eye Performance - Diamond Eye Performance 1994-1997.5 FORD 7.3L POWERSTROKE F250/F350 (ALL CAB AND BED LENGTHS) 4in. 409 S K4312S

Diamond Eye Performance 1994-1997.5 FORD 7.3L POWERSTROKE F250/F350 (ALL CAB AND BED LENGTHS) 4in. 409 S K4312S

Exhaust System Kit

Price: $1,606.66

Sale: $883.53

Exhaust - Exhaust Systems - Diamond Eye Performance - Diamond Eye Performance 2004.5-2007.5 DODGE 5.9L CUMMINS 2500/3500 (ALL CAB AND BED LENGTHS)-4in. 409 ST K4236S

Diamond Eye Performance 2004.5-2007.5 DODGE 5.9L CUMMINS 2500/3500 (ALL CAB AND BED LENGTHS)-4in. 409 ST K4236S

Exhaust System Kit

Price: $1,606.66

Sale: $883.53

Exhaust - Exhaust Systems - Diamond Eye Performance - Diamond Eye Performance 2006-2007 CHEVY 6.6L LBZ DURAMAX 2500/3500 (ALL CAB AND BED LENGHTS)-5in. ALUMIN K5123A

Diamond Eye Performance 2006-2007 CHEVY 6.6L LBZ DURAMAX 2500/3500 (ALL CAB AND BED LENGHTS)-5in. ALUMIN K5123A

Exhaust System Kit

Price: $1,371.08

Sale: $753.98

Diamond Eye Performance 1994-1997.5 FORD 7.3L POWERSTROKE F250/F350 (ALL CAB AND BED LENGTHS) 4in. ALUMI K4308A

Exhaust System Kit

Price: $1,340.47

Sale: $737.14

Exhaust - Exhaust Systems - Diamond Eye Performance - Diamond Eye Performance 1989-1993 DODGE 5.9L CUMMINS 2500/3500 2X4 4" STAINLESS TURBO BACK SINGLE K4209S

Diamond Eye Performance 1989-1993 DODGE 5.9L CUMMINS 2500/3500 2X4 4" STAINLESS TURBO BACK SINGLE K4209S

Exhaust System Kit

Price: $1,315.41

Sale: $723.36

Exhaust - Exhaust Systems - Diamond Eye Performance - Diamond Eye Performance 1994-1997.5 FORD 7.3L POWERSTROKE F250/F350 (ALL CAB AND BED LENGTHS) 5in. ALUMI K5314A

Diamond Eye Performance 1994-1997.5 FORD 7.3L POWERSTROKE F250/F350 (ALL CAB AND BED LENGTHS) 5in. ALUMI K5314A

Exhaust System Kit

Price: $1,283.43

Sale: $705.77

Exhaust - Exhaust Systems - Diamond Eye Performance - Diamond Eye Performance 1994-2002 DODGE 5.9L CUMMINS 2500/3500 (ALL CAB AND BED LENGTHS)-4in. ALUMINIZED K4214A-RP

Diamond Eye Performance 1994-2002 DODGE 5.9L CUMMINS 2500/3500 (ALL CAB AND BED LENGTHS)-4in. ALUMINIZED K4214A-RP

Exhaust System Kit

Price: $1,194.39

Sale: $709.49

Diamond Eye 1994-1997.5 FORD 7.3L Powerstroke F250/F350 4in. 409 SS

Exhaust System Kit

Price: $1,173.56

Sale: $697.11

Diamond Eye 4" Turbo Back Exhaust w/Turn Down 409 SS 1998.5-2002 Ram 5.9L - K4212S-TD

Exhaust System Kit

Price: $1,169.35

Sale: $687.60

Diamond Eye Performance 1994-1997.5 FORD 7.3L POWERSTROKE F250/F350 (ALL CAB AND BED LENGTHS) 4in. 409 S K4306S

Exhaust System Kit

Price: $1,266.79

Sale: $696.63

Exhaust - Exhaust Systems - Diamond Eye Performance - Turbo Back Exhaust 94-02 Dodge RAM 2500/3500 5.9L Cummins 5 Inch SinglePassWithno Muffler Aluminized Diamond Eye

Turbo Back Exhaust 94-02 Dodge RAM 2500/3500 5.9L Cummins 5 Inch SinglePassWithno Muffler Aluminized Diamond Eye

Price: $1,112.26

Sale: $660.70

Diamond Eye 89-93 Dodge 5.9L Cummins 2500/3500 2X4 4" Stainless Turbo Back No Muffler

Exhaust System Kit

Price: $1,144.00

Sale: $629.09

Diamond Eye Performance 1989-1993 DODGE 5.9L CUMMINS 2500/3500 4x4 4in.

Exhaust System Kit

Price: $1,055.26

Sale: $626.85

Diamond Eye Performance 1994-1997.5 FORD 7.3L POWERSTROKE F250/F350 (ALL CAB AND BED LENGTHS) 4in. 409 S K4310S

Exhaust System Kit

Price: $1,143.20

Sale: $628.65

Diamond Eye Performance 1994-1997.5 FORD 7.3L POWERSTROKE F250/F350 (ALL CAB AND BED LENGTHS) 4in. ALUMI K4306A

Exhaust System Kit

Price: $1,055.26

Sale: $626.85

Diamond Eye Performance 1994-1997.5 FORD 7.3L POWERSTROKE F250/F350 (ALL CAB AND BED LENGTHS) 5in. ALUMI K5314A-RP

Exhaust System Kit

Price: $1,138.84

Sale: $626.26

Exhaust - Exhaust Systems - Diamond Eye Performance - Diamond Eye Performance 1994-2002 DODGE 5.9L CUMMINS 2500/3500 (ALL CAB AND BED LENGTHS)-4in. 409 STAINL K4212S-RP

Diamond Eye Performance 1994-2002 DODGE 5.9L CUMMINS 2500/3500 (ALL CAB AND BED LENGTHS)-4in. 409 STAINL K4212S-RP

Exhaust System Kit

Price: $1,173.56

Sale: $645.35

Exhaust - Exhaust Systems - Diamond Eye Performance - Diamond Eye Performance 2006-2007.5 CHEVY/GMC 6.6L DURAMAX 2500/3500 (ALL CAB AND BED LENGTHS) 4in. 409 K4122S

Diamond Eye Performance 2006-2007.5 CHEVY/GMC 6.6L DURAMAX 2500/3500 (ALL CAB AND BED LENGTHS) 4in. 409 K4122S

Exhaust System Kit

Price: $1,143.20

Sale: $628.65

Diamond Eye Performance 1989-1993 DODGE 5.9L CUMMINS 2500/3500 2x4 ONLY-4in. ALUMINIZED

Exhaust System Kit

Price: $1,055.26

Sale: $580.30

Diamond Eye Performance 1994-1997.5 FORD 7.3L POWERSTROKE F250/F350 (ALL CAB AND BED LENGTHS) 5in. ALUMI K5316A

Exhaust System Kit

Price: $1,055.26

Sale: $580.30

Diamond Eye Performance 2011-2015 CHEVY 6.6L DURAMAX 2500/3500 4" ALUM DPF BACK DUAL K4163A

Exhaust System Kit

Price: $1,001.67

Sale: $550.83

Diamond Eye Performance 1994-2002 DODGE 5.9L CUMMINS 2500/3500 (ALL CAB AND BED LENGTHS)-4in. ALUMINIZED K4212A

Exhaust System Kit

Price: $919.21

Sale: $546.03

Exhaust - Exhaust Systems - Diamond Eye Performance - Diamond Eye Performance 2004.5-2007.5 DODGE 5.9L CUMMINS 2500/3500 (ALL CAB AND BED LENGTHS)-5in. ALUMIN K5244A-RP

Diamond Eye Performance 2004.5-2007.5 DODGE 5.9L CUMMINS 2500/3500 (ALL CAB AND BED LENGTHS)-5in. ALUMIN K5244A-RP

Exhaust System Kit

Price: $916.63

Sale: $544.50

Exhaust - Exhaust Systems - Diamond Eye Performance - Diamond Eye Performance 2006-2007.5 CHEVY/GMC 6.6L DURAMAX 2500/3500 (ALL CAB AND BED LENGTHS) 5in. ALUM K5126A-RP

Diamond Eye Performance 2006-2007.5 CHEVY/GMC 6.6L DURAMAX 2500/3500 (ALL CAB AND BED LENGTHS) 5in. ALUM K5126A-RP

Exhaust System Kit

Price: $916.63

Sale: $544.50

Exhaust - Exhaust Systems - Diamond Eye Performance - Diamond Eye Performance 2007.5-2012 DODGE 6.7L CUMMINS 2500/3500 (ALL CAB AND BED LENGTHS) 5in. 409 STAI K5252S

Diamond Eye Performance 2007.5-2012 DODGE 6.7L CUMMINS 2500/3500 (ALL CAB AND BED LENGTHS) 5in. 409 STAI K5252S

Exhaust System Kit

Price: $902.74

Sale: $536.25

Diamond Eye Performance 1994-1997.5 FORD 7.3L POWERSTROKE F250/F350 (ALL CAB AND BED LENGTHS) 4in. ALUMI K4306A-RP

Exhaust System Kit

Price: $916.63

Sale: $504.06

Diamond Eye Performance 1994-1997.5 FORD 7.3L POWERSTROKE F250/F350 (ALL CAB AND BED LENGTHS) 5in. ALUMI K5316A-RP

Exhaust System Kit

Price: $916.63

Sale: $504.06

Diamond Eye 1989-1993 DODGE 5.9L CUMMINS 2500/3500 4x4-4in. Aluminized No muffler

Exhaust System Kit

Price: $903.68

Sale: $496.94

Diamond Eye Performance 1994-1997.5 Ford 7.3L F250/F350 (All Cabs and Beds) 4in. ALUMI K4310A

Exhaust System Kit

Price: $884.14

Sale: $486.20

Exhaust - Exhaust Systems - Diamond Eye Performance - Diamond Eye Performance 2001-2005 CHEVY/GMC 6.6L DURAMAX 2500/3500 (ALL CAB AND BED LENGHTS)-4in. ALUMIN K4110A

Diamond Eye Performance 2001-2005 CHEVY/GMC 6.6L DURAMAX 2500/3500 (ALL CAB AND BED LENGHTS)-4in. ALUMIN K4110A

Exhaust System Kit

Price: $884.14

Sale: $486.20

Exhaust - Exhaust Systems - Diamond Eye Performance - Turbo Back Exhaust 89-93 Dodge 5.9L Cummins Dodge RAM 2500/3500 2X4 4 Inch Aluminized Diamond Eye

Turbo Back Exhaust 89-93 Dodge 5.9L Cummins Dodge RAM 2500/3500 2X4 4 Inch Aluminized Diamond Eye

Price: $903.68

Sale: $496.94

Diamond Eye Performance 1994-2002 DODGE 5.9L CUMMINS 2500/3500 (ALL CAB AND BED LENGTHS)-4in. ALUMINIZED K4212A-RP

Exhaust System Kit

Price: $786.72

Sale: $432.62

Exhaust - Exhaust Systems - Diamond Eye Performance - Diamond Eye Performance 2004.5-2007.5 DODGE 5.9L CUMMINS 2500/3500 (ALL CAB AND BED LENGTHS)-4in. ALUMIN K4234A-RP

Diamond Eye Performance 2004.5-2007.5 DODGE 5.9L CUMMINS 2500/3500 (ALL CAB AND BED LENGTHS)-4in. ALUMIN K4234A-RP

Exhaust System Kit

Price: $749.97

Sale: $445.50

Exhaust - Exhaust Systems - Diamond Eye Performance - Diamond Eye Performance 2007.5-2012 DODGE 6.7L CUMMINS 2500/3500 (ALL CAB AND BED LENGTHS) 5in. ALUMINIZ K5252A

Diamond Eye Performance 2007.5-2012 DODGE 6.7L CUMMINS 2500/3500 (ALL CAB AND BED LENGTHS) 5in. ALUMINIZ K5252A

Exhaust System Kit

Price: $749.97

Sale: $445.50

Exhaust - Exhaust Systems - Diamond Eye Performance - Diamond Eye Performance 13-14 DODGE 6.7L CUMMINS 5" DIESEL PARTICULATE FILTER BACK SINGLE 409 STAINLESS K5256A

Diamond Eye Performance 13-14 DODGE 6.7L CUMMINS 5" DIESEL PARTICULATE FILTER BACK SINGLE 409 STAINLESS K5256A

Exhaust System Kit

Price: $770.06

Sale: $423.45

Diamond Eye Performance 2001-2005 CHEVY/GMC 6.6L DURAMAX 2500/3500 (ALL CAB AND BED LENGHTS)-4in. ALUMIN K4110A-RP

Exhaust System Kit

Price: $749.97

Sale: $412.43

Exhaust - Exhaust Systems - Diamond Eye Performance - Diamond Eye Performance 2007.5-2010 CHEVY/GMC 6.6L DURAMAX 2500/3500 (ALL CAB AND BED LENGHTS) 4in. ALUM K4130A

Diamond Eye Performance 2007.5-2010 CHEVY/GMC 6.6L DURAMAX 2500/3500 (ALL CAB AND BED LENGHTS) 4in. ALUM K4130A

Exhaust System Kit

Price: $744.02

Sale: $409.14

Exhaust - Exhaust Systems - Diamond Eye Performance - Diamond Eye Performance 2011-2014 FORD 6.7L POWERSTROKE F250/F350 4" DPF BACK SINGLE ALUMINIZED K4376A

Diamond Eye Performance 2011-2014 FORD 6.7L POWERSTROKE F250/F350 4" DPF BACK SINGLE ALUMINIZED K4376A

Exhaust System Kit

Price: $751.95

Sale: $413.51

Diamond Eye Performance 2011-2015 CHEVY/GMC 6.6L Duramax - 4in. AL - K4156A

Exhaust System Kit

Price: $744.02

Sale: $409.14

Exhaust - Exhaust Systems - Diamond Eye Performance - Exhaust Pipe 4 Inch 89-93 Dodge Dodge RAM 2500/3500 RWD First Section Only Single Performance Series Exhaust Tail Pipe Diamond Eye

Exhaust Pipe 4 Inch 89-93 Dodge Dodge RAM 2500/3500 RWD First Section Only Single Performance Series Exhaust Tail Pipe Diamond Eye

Price: $167.57

Sale: $92.14

Exhaust - Exhaust Systems - Diamond Eye Performance - Exhaust Pipe 4 Inch 89-93 Dodge Dodge RAM 2500/3500 2X4 Only Second Section Pass Performance Series Exhaust Tail Pipe Diamond Eye

Exhaust Pipe 4 Inch 89-93 Dodge Dodge RAM 2500/3500 2X4 Only Second Section Pass Performance Series Exhaust Tail Pipe Diamond Eye

Price: $147.00

Sale: $80.84

Diamond Eye Performance 1994-1997.5 FORD 7.3L POWERSTROKE F250/F350 (ALL CAB AND BED LENGTHS) 4in. 409 S K4308S

Exhaust System Kit

Price: $1,847.66

Sale: $1,016.05

Diamond Eye Performance 1994-2002 DODGE 5.9L CUMMINS 2500/3500 (ALL CAB AND BED LENGTHS)-4in. 409 STAINL K4214S

Exhaust System Kit

Price: $1,847.66

Sale: $1,016.05

Diamond Eye Performance 1994-1997.5 FORD 7.3L POWERSTROKE F250/F350 (ALL CAB AND BED LENGTHS) 4in. 409 S K4308S-RP

Exhaust System Kit

Price: $1,679.10

Sale: $923.35

Diamond Eye Performance 1994-2002 DODGE 5.9L CUMMINS 2500/3500 (ALL CAB AND BED LENGTHS)-4in. 409 STAINL K4214S-RP

Exhaust System Kit

Price: $1,679.10

Sale: $923.35

Exhaust - Exhaust Systems - Diamond Eye Performance - Diamond Eye Performance 2006-2007 CHEVY 6.6L LBZ DURAMAX 2500/3500 (ALL CAB AND BED LENGHTS)-5in. SS K5123S

Diamond Eye Performance 2006-2007 CHEVY 6.6L LBZ DURAMAX 2500/3500 (ALL CAB AND BED LENGHTS)-5in. SS K5123S

Exhaust System Kit

Price: $1,663.97

Sale: $915.03

Diamond Eye Performance 2006-2007.5 CHEVY/GMC 6.6L DURAMAX 2500/3500 (ALL CAB AND BED LENGTHS) 4in. 409 K4124S

Exhaust System Kit

Price: $1,606.66

Sale: $883.53

Exhaust - Exhaust Systems - Diamond Eye Performance - Diamond Eye Performance 2004-2005 CHEVY 6.6L LLY DURAMAX 2500/3500 (ALL CAB AND BED LENGHTS)-4in. SS K4120S

Diamond Eye Performance 2004-2005 CHEVY 6.6L LLY DURAMAX 2500/3500 (ALL CAB AND BED LENGHTS)-4in. SS K4120S

Exhaust System Kit

Price: $1,525.12

Sale: $838.67

Exhaust - Exhaust Systems - Diamond Eye Performance - Diamond Eye Performance 2006-2007 CHEVY 6.6L LBZ DURAMAX 2500/3500 (ALL CAB AND BED LENGHTS)-4in. SS K4127S

Diamond Eye Performance 2006-2007 CHEVY 6.6L LBZ DURAMAX 2500/3500 (ALL CAB AND BED LENGHTS)-4in. SS K4127S

Exhaust System Kit

Price: $1,525.12

Sale: $838.67

Diamond Eye Performance 2008-2010 FORD 6.4L Pwr Stroke F250/F350-5in. Stainless Steel K5371S

Exhaust System Kit

Price: $1,519.46

Sale: $835.57

Diamond Eye Performance 2015-2016 CHEVY 1500 4.3L & 5.3L 3" STAINLESS CAT BACK DUAL K3126S

Exhaust System Kit

Price: $1,514.79

Sale: $832.99

Exhaust - Exhaust Systems - Diamond Eye Performance - Cat Back Exhaust System Single In/Dual Out 04.5-07 Dodge RAM 2500/3500 4 inch No Muffler409 Stainless Diamond Eye

Cat Back Exhaust System Single In/Dual Out 04.5-07 Dodge RAM 2500/3500 4 inch No Muffler409 Stainless Diamond Eye

Price: $1,444.38

Sale: $794.29

Diamond Eye 4" Turbo Back Exhaust w/ Turn Down for 99-03 Ford F250/F350 7.3L - K4318A-TD

Exhaust System Kit

Price: $784.32

Diamond Eye Performance 1994-1997.5 FORD 7.3L POWERSTROKE F250/F350 (ALL CAB AND BED LENGTHS) 4in. 409 S K4312S-RP

Exhaust System Kit

Price: $1,444.38

Sale: $794.29

Diamond Eye 2007.5-2010 Chevy/GMC 6.6L LMM Duarmax 2500/3500 5in. SS K5131S

Exhaust System Kit

Price: $1,421.60

Sale: $781.76

Exhaust - Exhaust Systems - Diamond Eye Performance - Diamond Eye Performance 1999-2003.5 FORD 7.3L POWERSTROKE F250/F350 (ALL CAB AND BED LENGTHS) 4in. 409 S K4320S

Diamond Eye Performance 1999-2003.5 FORD 7.3L POWERSTROKE F250/F350 (ALL CAB AND BED LENGTHS) 4in. 409 S K4320S

Exhaust System Kit

Price: $781.74

Exhaust - Exhaust Systems - Diamond Eye Performance - Turbo Back Exhaust 89-93 Dodge RAM 2500/3500 5.9L Cummins 2X4 4 Inch Stainless Turbo Back Single Hx40 DPF Diamond Eye

Turbo Back Exhaust 89-93 Dodge RAM 2500/3500 5.9L Cummins 2X4 4 Inch Stainless Turbo Back Single Hx40 DPF Diamond Eye

Price: $1,416.04

Sale: $778.71

Diamond Eye 2008-2010 FORD 6.4L Pwr Stroke F250/F350-4in. Stainless Steel - K4363S

Exhaust System Kit

Price: $1,369.80

Sale: $753.27

Diamond Eye 2008-2010 FORD 6.4L Pwr Stroke F250/F350-5in. ALUMIN K5371A

Exhaust System Kit

Price: $1,356.93

Sale: $746.20

Diamond Eye Performance 1994-2002 DODGE 5.9L CUMMINS 2500/3500 (ALL CAB AND BED LENGTHS)-4in. ALUMINIZED K4214A

Exhaust System Kit

Price: $1,340.47

Sale: $737.14

Items 1-60 of 129

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