Product Description
DIAMOND EYE K5126A-RP is a 5" aluminized cat-back system that replaces the factory tail section with a high-flow, single side–exit layout. This version uses a muffler replacement (no muffler) straight-through section for maximum flow and an aggressive exhaust note. Mandrel-bent tubing and OE hanger locations simplify installation while improving backpressure and EGTs.
FAQ: WILL THIS FIT MY TRUCK?
Designed for 2006–2007/2007.5 Chevy Silverado & GMC Sierra 2500/3500 HD, 6.6L Duramax (LBZ), all cab & bed lengths. Many retailers list coverage through 2007.5; always confirm your engine (LBZ) and build date for best results.
FAQ: DOES THIS KIT INCLUDE A MUFFLER?
No. The -RP in the part number denotes a muffler delete / replacement pipe. If you prefer a muffled version, see cross-reference items below.
FAQ: WHAT MATERIAL IS IT?
Aluminized steel (5" OD) for value and durability. A 409 stainless variant is available—see cross-reference.
Fitment Details
- Make/Model: Chevrolet Silverado 2500/3500 HD; GMC Sierra 2500/3500 HD
- Engine: 6.6L Duramax LBZ
- Years: 2006–2007 (Classic) and commonly listed as 2007.5—verify LBZ configuration
- Configuration: Cat-back, single passenger-side exit, uses OE hangers
Cross Reference Items
- Diamond Eye K5126A — same system with muffler, 5" aluminized (cat-back single).
- Diamond Eye K5126S — 5" stainless steel cat-back single (muffled), for the same LBZ fitment.
Specifications
| Brand | Diamond Eye Performance |
|---|---|
| MPN | K5126A-RP |
| System Type | Cat-back, single side exit |
| Tubing Diameter | 5" (mandrel bent) |
| Material | Aluminized steel |
| Includes Muffler | No — muffler replacement pipe included |
| Emissions | Cat-back (behind factory emissions components) |
| UPC | 841963109221 |
| GTIN | 0841963109221 |
| Shipping Weight | ~66.6 lb |
| Package Dimensions | 51.5" x 20.8" x 12.4" |
| Prop 65 | WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov |
