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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 88

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Exhaust - Exhaust Parts - Diamond Eye Performance - Diamond Eye Performance, 5" PERFERATED HIGH FLOW- STRAIGHT THROUGH PERFORMANCE MUFFLER - 5" x 5" x 30" - T409 STAINLESS STEEL - Polished - 70050

Diamond Eye Performance, 5" PERFERATED HIGH FLOW- STRAIGHT THROUGH PERFORMANCE MUFFLER - 5" x 5" x 30" - T409 STAINLESS STEEL - Polished - 70050

Exhaust Muffler

Price: $443.51

Sale: $263.45

Diamond Eye Performance , 5" PERFERATED HIGH FLOW- STRAIGHT THROUGH PERFORMANCE MUFFLER - 5"x 5" x 30" - T409 STAINLESS STEEL - 460031

Exhaust Muffler

Price: $396.48

Sale: $218.04

Exhaust - Exhaust Parts - Diamond Eye Performance - Diamond Eye Performance 5" PERFORATED PACKED MUFFLER 20" OVERAL, 14" BODY, 7" CASE 409 STAINLESS STEEL 560020

Diamond Eye Performance 5" PERFORATED PACKED MUFFLER 20" OVERAL, 14" BODY, 7" CASE 409 STAINLESS STEEL 560020

Exhaust Muffler

Price: $392.52

Sale: $215.84

Diamond Eye Performance 4in. Aluminized Quiet Tone Resonator 400405

Exhaust Resonator

Price: $215.00

Sale: $118.23

Diamond Eye Performance -5in. ALUMINIZED 40in. Straight Bumped On One End - 405040

Exhaust Pipe

Price: $160.04

Sale: $88.01

No Image Available

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-5in. 409 STAINLESS STEEL PERFORMANCE ELBOW-5in. 529026

Exhaust Pipe

Price: $149.76

Sale: $88.97

No Image Available

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-4in. ALUMINIZED 48in. STRAIGHT BUMPED ON ONE END 400048

Exhaust Pipe

Price: $128.51

Sale: $70.67

No Image Available

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-5in. ALUMINIZED PERFORMANCE ELBOW-5in. OD X 5in. 529025

Exhaust Pipe

Price: $120.27

Sale: $70.73

No Image Available

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-4in. 409 STAINLESS STEEL PERFORMANCE ELBOW-4in. 529021

Exhaust Pipe

Price: $103.91

Sale: $61.72

Diamond Eye Performance 5in. Aluminized 24in. Long Straight 405024

Exhaust Pipe

Price: $93.10

Sale: $51.21

No Image Available

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-4in. 409 STAINLESS STEEL PERFORMANCE ELBOW-4in. 524521

Exhaust Pipe

Price: $96.94

Sale: $53.31

No Image Available

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-4in. ALUMINIZED 24in. STRAIGHT BUMPED ON ONE END 400024

Exhaust Pipe

Price: $83.81

Sale: $46.09

No Image Available

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-3.5in. ALUMINIZED PERFORMANCE ELBOW-3.5in. OD X 524510

Exhaust Pipe

Price: $78.90

Sale: $43.39

No Image Available

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-4in. ALUMINIZED PERFORMANCE ELBOW-4in. OD X 4in. 524520

Exhaust Pipe

Price: $75.32

Sale: $41.42

Exhaust - Exhaust Parts - Diamond Eye Performance - Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-2.75in. 409 STAINLESS STEEL TORCA LAP-JOINT CLAMP L27SA

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-2.75in. 409 STAINLESS STEEL TORCA LAP-JOINT CLAMP L27SA

Exhaust Clamp

Price: $54.34

Sale: $31.95

Exhaust - Exhaust Parts - Diamond Eye Performance - Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-4in. 409 STAINLESS STEEL TORCA LAP-JOINT CLAMP L40SA

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-4in. 409 STAINLESS STEEL TORCA LAP-JOINT CLAMP L40SA

Exhaust Clamp

Price: $57.98

Sale: $31.89

Exhaust - Exhaust Parts - Diamond Eye Performance - Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-4in. ALUMINIZED TORCA LAP-JOINT CLAMP L40AA

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-4in. ALUMINIZED TORCA LAP-JOINT CLAMP L40AA

Exhaust Clamp

Price: $42.16

Sale: $23.18

Exhaust - Exhaust Parts - Diamond Eye Performance - Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-3in. ALUMINIZED TORCA BAND CLAMP BC300A

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-3in. ALUMINIZED TORCA BAND CLAMP BC300A

Exhaust Clamp

Price: $23.13

Sale: $12.72

Exhaust - Exhaust Parts - Diamond Eye Performance - Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-4in. ALUMINIZED TORCA BAND CLAMP BC400A

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-4in. ALUMINIZED TORCA BAND CLAMP BC400A

Exhaust Clamp

Price: $26.49

Sale: $14.57

Exhaust - Exhaust Parts - Diamond Eye Performance - Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-5in. ZINC COATED U-BOLT SADDLE CLAMP 454003

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-5in. ZINC COATED U-BOLT SADDLE CLAMP 454003

Exhaust Clamp

Price: $26.52

Sale: $14.58

Diamond Eye Performance, 3.5" TORCA BAND CLAMP - ALUMINIZED - BC350A

Exhaust Clamp

Price: $23.98

Sale: $13.20

Exhaust - Exhaust Parts - Diamond Eye Performance - Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-3.5in. STANDARD STEEL U-BOLT SADDLE CLAMP 444001

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-3.5in. STANDARD STEEL U-BOLT SADDLE CLAMP 444001

Exhaust Clamp

Price: $17.87

Sale: $9.83

Exhaust - Exhaust Parts - Diamond Eye Performance - Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-4in. ZINC COATED U-BOLT SADDLE CLAMP 454000

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-4in. ZINC COATED U-BOLT SADDLE CLAMP 454000

Exhaust Clamp

Price: $20.07

Sale: $11.04

Diamond Eye Performance Universal Exhaust Stack Kit, 5" Aluminized Exhaust Stack Kit, 150100

Exhaust Stack Pipe

Price: $1,083.29

Sale: $595.71

Exhaust - Exhaust Parts - Diamond Eye Performance - Diamond Eye Performance, 5" LOUVERED HIGH FLOW- STRAIGHT THROUGH PERFORMANCE MUFFLER - 5" x 5" x 26" - ALUMINIZED - 460150

Diamond Eye Performance, 5" LOUVERED HIGH FLOW- STRAIGHT THROUGH PERFORMANCE MUFFLER - 5" x 5" x 26" - ALUMINIZED - 460150

Exhaust Muffler

Price: $496.71

Sale: $273.15

Exhaust - Exhaust Parts - Diamond Eye Performance - Diamond Eye Performance 5" ALUMINIZED LOUVERED HIGH FLOW- STRAIGHT THROUGH PERFORMANCE MUFFLER - 5" I.D. X 5" I.D. - 460100

Diamond Eye Performance 5" ALUMINIZED LOUVERED HIGH FLOW- STRAIGHT THROUGH PERFORMANCE MUFFLER - 5" I.D. X 5" I.D. - 460100

Exhaust Muffler

Price: $404.14

Sale: $222.24

Exhaust - Exhaust Parts - Diamond Eye Performance - Exhaust Pipe 4 Inch 04.5-Early 07 RAM 2500/3500 Second Section Driver Side Stainless Exhaust Tail Pipe Diamond Eye

Exhaust Pipe 4 Inch 04.5-Early 07 RAM 2500/3500 Second Section Driver Side Stainless Exhaust Tail Pipe Diamond Eye

Price: $330.77

Sale: $181.89

Exhaust - Exhaust Parts - Diamond Eye Performance - Exhaust Pipe 4 Inch 04.5-Early 07 RAM 2500/3500 Second Section Pass Stainless Performance Series Exhaust Tail Pipe Diamond Eye

Exhaust Pipe 4 Inch 04.5-Early 07 RAM 2500/3500 Second Section Pass Stainless Performance Series Exhaust Tail Pipe Diamond Eye

Price: $335.69

Sale: $184.61

No Image Available

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-4in. 409 STAINLESS STEEL PERFORMANCE Y PIPE-4in. 420065

Exhaust Pipe

Price: $295.65

Sale: $162.58

Exhaust - Exhaust Parts - Diamond Eye Performance - Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-2.5in ALUMINIZED CROSSOVER PIPE 321099

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-2.5in ALUMINIZED CROSSOVER PIPE 321099

Exhaust Clamp

Price: $263.46

Sale: $144.88

Exhaust - Exhaust Parts - Diamond Eye Performance - Diamond Eye Performance 2001-EARLY 2007 CHEVY/GMC 6.6L DIESEL 2500/3500 (ALL CAB AND BED LENGTHS)-PERFOR 362005

Diamond Eye Performance 2001-EARLY 2007 CHEVY/GMC 6.6L DIESEL 2500/3500 (ALL CAB AND BED LENGTHS)-PERFOR 362005

Exhaust Tail Pipe

Price: $261.10

Sale: $143.57

Exhaust - Exhaust Parts - Diamond Eye Performance - Exhaust Pipe 4 Inch 04.5-Early 07 RAM 2500/3500 First Section Pass Stainless Performance Series Exhaust Tail Pipe Diamond Eye

Exhaust Pipe 4 Inch 04.5-Early 07 RAM 2500/3500 First Section Pass Stainless Performance Series Exhaust Tail Pipe Diamond Eye

Price: $237.14

Sale: $130.41

No Image Available

Diamond Eye Performance 1999-EARLY 2003 FORD 7.3L POWERSTROKE F250/F350 (ALL CAB AND BED LENGTHS)-PERFOR 161002

Exhaust Tail Pipe

Price: $201.21

Sale: $110.65

No Image Available

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-4in. 409 STAINLESS STEEL 48in. STRAIGHT BUMPED O 420048

Exhaust Pipe

Price: $187.97

Sale: $103.37

Exhaust - Exhaust Parts - Diamond Eye Performance - Diamond Eye Tailpipe Assy 2003-EARLY 2007 DODGE 5.9L CUMMINS 2500/3500 (ALL CAB AND BED LENGTHS) 221064

Diamond Eye Tailpipe Assy 2003-EARLY 2007 DODGE 5.9L CUMMINS 2500/3500 (ALL CAB AND BED LENGTHS) 221064

Exhaust Tail Pipe

Price: $186.05

Sale: $102.32

Exhaust - Exhaust Parts - Diamond Eye Performance - Diamond Eye Performance 2001-2007.5 CHEVY/GMC 6.6L DURAMAX 2500/3500 (ALL CAB AND BED LENGTHS)-PERFORMAN 361045

Diamond Eye Performance 2001-2007.5 CHEVY/GMC 6.6L DURAMAX 2500/3500 (ALL CAB AND BED LENGTHS)-PERFORMAN 361045

Exhaust Flange

Price: $168.69

Sale: $92.76

No Image Available

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-4in. 409 STAINLESS STEEL 36in. STRAIGHT BUMPED O 420036

Exhaust Pipe

Price: $150.69

Sale: $82.88

No Image Available

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-4in. 409 STAINLESS STEEL 24in. STRAIGHT BUMPED O 420024

Exhaust Pipe

Price: $122.10

Sale: $67.15

Diamond Eye Performance 2001-2007.5 CHEVY/GMC 6.6L DURAMAX 2500/3500 (ALL CAB AND BED LENGTHS)-PERFORMAN 321045

Exhaust Flange

Price: $111.91

Sale: $61.55

No Image Available

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-3.5in. 409 STAINLESS STEEL PERFORMANCE ELBOW-3.5 529011

Exhaust Pipe

Price: $109.72

Sale: $60.33

Exhaust - Exhaust Parts - Diamond Eye Performance - Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-5in. 409 STAINLESS STEEL PERFORMANCE ELBOW-5in. 524525

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-5in. 409 STAINLESS STEEL PERFORMANCE ELBOW-5in. 524525

Exhaust Pipe

Price: $110.32

Sale: $60.67

No Image Available

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-4in. ALUMINIZED 36in. STRAIGHT BUMPED ON ONE END 400036

Exhaust Pipe

Price: $105.96

Sale: $58.27

No Image Available

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-3.5in. 409 STAINLESS STEEL PERFORMANCE ELBOW-3.5 524511

Exhaust Pipe

Price: $100.46

Sale: $55.24

No Image Available

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-3.5in. ALUMINIZED PERFORMANCE ELBOW-3.5in. OD X 529010

Exhaust Pipe

Price: $93.32

Sale: $51.31

No Image Available

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-4in. ALUMINIZED PERFORMANCE ELBOW-4in. OD X 4in. 529020

Exhaust Pipe

Price: $80.80

Sale: $44.43

Exhaust - Exhaust Parts - Diamond Eye Performance - Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-V-BAND CLAMP FOR HX40 STYLE TURBO VC400HX40

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-V-BAND CLAMP FOR HX40 STYLE TURBO VC400HX40

Exhaust Clamp

Price: $83.79

Sale: $46.08

No Image Available

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-3in. 409 STAINLESS STEEL PERFORMANCE ELBOW-3in. 529006

Exhaust Pipe

Price: $77.73

Sale: $42.74

Diamond Eye Performance 409 STAINLESS STEEL PERFORMANCE ELBOW-3in. 524526

Exhaust Pipe

Price: $65.55

Sale: $36.05

No Image Available

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-3in. ALUMINIZED PERFORMANCE ELBOW-3in. OD X 3in. 529005

Exhaust Pipe

Price: $66.09

Sale: $36.34

Exhaust - Exhaust Parts - Diamond Eye Performance - Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-3in. 409 STAINLESS STEEL TORCA LAP-JOINT CLAMP L30SA

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-3in. 409 STAINLESS STEEL TORCA LAP-JOINT CLAMP L30SA

Exhaust Clamp

Price: $55.26

Sale: $30.40

No Image Available

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-3in. ALUMINIZED PERFORMANCE ELBOW-3in. OD X 3in. 524505

Exhaust Pipe

Price: $60.56

Sale: $33.30

Exhaust - Exhaust Parts - Diamond Eye Performance - Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-5in. 409 STAINLESS STEEL TORCA LAP-JOINT CLAMP L50SA

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-5in. 409 STAINLESS STEEL TORCA LAP-JOINT CLAMP L50SA

Exhaust Clamp

Price: $61.40

Sale: $33.76

Exhaust - Exhaust Parts - Diamond Eye Performance - Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-2.25in. 409 STAINLESS STEEL TORCA LAP-JOINT CLAMP L22SA

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-2.25in. 409 STAINLESS STEEL TORCA LAP-JOINT CLAMP L22SA

Exhaust Clamp

Price: $52.72

Sale: $28.98

Exhaust - Exhaust Parts - Diamond Eye Performance - Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-2.5in. 409 STAINLESS STEEL TORCA LAP-JOINT CLAMP L25SA

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-2.5in. 409 STAINLESS STEEL TORCA LAP-JOINT CLAMP L25SA

Exhaust Clamp

Price: $53.53

Sale: $29.43

No Image Available

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-5in. 304 STAINLESS STEEL TORCA BAND CLAMP BC500S304

Exhaust Clamp

Price: $53.53

Sale: $29.43

No Image Available

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-4in. 304 STAINLESS STEEL TORCA BAND CLAMP BC400S304

Exhaust Clamp

Price: $48.09

Sale: $26.43

Diamond Eye Performance 3.5" TORCA BAND CLAMP - 304 STAINLESS STEEL - BC350S304

Exhaust Clamp

Price: $45.08

Sale: $24.80

No Image Available

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-5in. 430 BRIGHT STAINLESS STEEL TORCA BAND CLAMP BC500S430

Exhaust Clamp

Price: $44.27

Sale: $24.34

Diamond Eye Performance - 3in. TORCA BAND CLAMP - 304 STAINLESS STEEL - BC300S304

Exhaust Clamp

Price: $43.29

Sale: $23.80

No Image Available

Diamond Eye Performance PERFORMANCE DIESEL EXHAUST PART-2.75in. 304 STAINLESS STEEL TORCA BAND CLAMP BC275S304

Exhaust Clamp

Price: $41.66

Sale: $22.91

Items 1-60 of 88

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