- Tri-YDouble-stepped 1¾″ → 1⅞″ primaries
- 304Polished. No rust, no coatings
- Bolt-onMates to your Ramjet X-pipe muffler
- Loud/MedChoose your resonators
Ramjet Performance Parts // Bolts on to your Ramjet cat-back
Ramjet Header-Back Kit Ram 1500 5.7L
★★★★★Already running the Ramjet Cat-Back? This is the rest of your system: Tri-Y double-stepped headers, high-flow cats, a race crossover merge and middle resonators, in polished 304 stainless.
- ☎Talk to the team03 9746 6656
Custom dyno tune required +
This kit needs a custom dyno tune once fitted. Without it a check-engine light will appear and you won't get the gains the system is designed for. Book your dyno tune before or straight after install. Need help organising one? Call 03 9746 6656.
Header bolts not included +
You will need M8 × 25mm header bolts, available from your local supplier. Give us a call on 03 9746 6656 if you need a hand.
What's in the box +
Tri-Y headers (double-stepped 1¾″ → 1⅞″), high-flow catalytic converters, connecting pipes, race crossover merge, middle resonators (Loud or Medium), all gaskets and mounting hardware. Not included: header bolts, the Ramjet X-pipe centre muffler, cat-back and tips.
Shipping & returns +
$99 flat-rate delivery Australia-wide on exhaust orders, insured and tracked. Ships worldwide. Unopened items can be returned within 7 days. Not sure it fits? Call 03 9746 6656.
Engineered for power.Not just noise.
The Tri-Y layout delivers mid-range torque right where a 2.5-tonne truck needs it, while keeping the hard-charging top end of a 4-into-1 design.
Why it works
Double-stepped Tri-Y headers
Double-stepped primaries (1¾″ → 1⅞″) maintain exhaust velocity and enhance scavenging, producing strong torque and horsepower gains across the rev range.
Race crossover merge
Balances exhaust pulses between both cylinder banks, sharpening throttle response and improving scavenging. With the X-pipe already in your Ramjet cat-back, it helps reduce the resonance that causes highway drone.
Choose your resonators
The middle resonators set the character of the note. Loud and Medium flow the same and fit the same — only the volume changes.
Built to last
Full high-grade polished stainless steel throughout — no rust, no coatings, no compromises. Designed, developed and dyno-tested by GM Motorsport / Ramjet Performance.
The details
Specifications
- Fits
- Australian-delivered Ram 1500 5.7L HEMI V8 — 2012–2023, Classic (DS) & Limited (DT), standard wheelbase, already fitted with a Ramjet cat-back. Does not suit Crew Cab Long Bed (153.5″ wheelbase).
- System type
- Header-back to cat-back — headers through to the Ramjet X-pipe muffler
- Header design
- Tri-Y, double-stepped primaries 1¾″ → 1⅞″
- Cats
- High-flow catalytic converters
- Mid section
- Race crossover merge + middle resonators
- Material
- Full polished 304 stainless steel
- Sound options
- Loud or Medium resonators
- Hardware
- All gaskets and mounting hardware included. Header bolts are NOT included — you will need M8 × 25mm.
Frequently asked questions
Do I need to already own a Ramjet cat-back? +
Yes. This kit is the section from the headers through to your cat-back. It bolts onto the Ramjet X-pipe centre muffler you already have. If you don’t run a Ramjet cat-back, buy the complete full exhaust system instead and you’ll get everything in one.
Do I need a tune? +
Yes. This kit needs a custom dyno tune once fitted. Without it a check-engine light will appear and you won't get the full gains. Call 03 9746 6656 if you need help organising one.
What’s the difference between Loud and Medium? +
The middle resonators. Both options flow the same and fit the same — only the volume changes. Loud gives full race presence; Medium stays aggressive on throttle but is easier to live with day to day.
Is it a bolt-on fit? +
Yes — no cutting, no welding. Everything mates to the factory mounting points and to the flange on your existing Ramjet cat-back. We recommend your local exhaust shop, though it can be fitted at home with a hoist and mechanical knowledge.
Will it drone on the highway? +
Drone depends on the truck, the load and how it’s driven, so we won’t claim you will never hear any. The race crossover merge balances exhaust pulses between both banks, which — together with the X-pipe in your Ramjet cat-back — helps reduce the resonance that causes cabin drone.
Returns +
Unopened items can be returned within 7 days. Faulty items are fully covered after inspection.
Fitted. Driven. Reviewed.
Verified feedback from Ram 1500 owners running Ramjet.