Product Description
DIAMOND EYE K4258S is a 4.0" 409 stainless DPF-back exhaust engineered for post-DPF flow and a clean dual-split rear look. Mandrel-bent tubing and OE-style hangers deliver a bolt-on install and durable sound without touching emissions equipment.
Fitment note: The manufacturer lists K4258S for 2013–2015 Ram 2500 6.7L long box only. If you have a short box / Mega Cab, verify bed length before ordering.
What you get
- 409 stainless 4" DPF-back tubing
- Dual split-rear tailpipe layout
- Hangers, clamps, and hardware for a direct bolt-on
Benefits
- Lower backpressure vs. stock post-DPF piping
- Durable 409 stainless construction
- Clean dual-exit styling
FAQ: WILL THIS REQUIRE TUNING?
No. This system installs after the DPF and does not require tuning.
FAQ: IS IT STREET LEGAL?
It retains factory emissions equipment (DPF remains). Always follow local and state regulations.
FAQ: WILL IT FIT MY MEGA CAB SHORT BOX?
Per Diamond Eye’s listing, K4258S is for long box. If your truck is short box, confirm bed length and part selection before purchase.
Fitment Details
- Vehicle: Ram 2500 6.7L Cummins
- Years (manufacturer listing): 2013–2015
- Bed length: Long box only
- Configuration: DPF-back, single in / dual split rear out
- Material: 409 stainless steel
Cross-Reference / Alternatives (MBRP only)
- MBRP S6168AL 4" Cool Duals Filter-Back (aluminized) — dual exit look
- MBRP S61640409 5" Filter-Back Single Side (T409 stainless) — stainless alternative, single exit
Specifications
| Brand | Diamond Eye Performance |
|---|---|
| MPN | K4258S |
| Material | 409 stainless steel |
| System Type | DPF-back, 4" single in / dual split rear out |
| Vehicle Fit | 2013–2015 Ram 2500 6.7L Cummins, long box only |
| UPC | 841963105452 |
| GTIN | 0841963105452 (UPC-A) |
| Shipping Weight | ~68 lb |
| Package Dimensions | ~13" W x 21" H x 52" L |
| Country of Origin | USA (per distributor listings) |
| Prop 65 | WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov |
