Quick Answer: 2013–2018 Ram 6.7 5-Inch Dual Exhaust
For a 2013–2018 Ram 6.7L Cummins 5-inch dual system, fit the front and intermediate pipes loosely, then hang the splitter and both rear branches. Set the added left and right supports before measuring the center length. Check the turbo connection, brake lines, parking-brake cables and axle vent before tightening from front to rear.
Before you start: Lay out the driver-side and passenger-side pipes separately. The Ram dual-exhaust guide shows both added tailpipe supports and the rear branches; check the cab/box extension arrangement before assembly: 2013–2018 Ram 6.7L 5-Inch Dual Exhaust Installation PDF.
Why Both Rear Branches Need Their Own Supports
A dual system needs two supported rear branches, not just a splitter and matching tips. Find both added tailpipe support mounts and sort the left and right pipes before you start.
The center length matters too. A cab or box mismatch can shift both outlets, so check that layout before trying to fix one low tailpipe at the rear.
U.S. emissions rules prohibit tampering with certified controls. A race-use label alone does not establish an exemption.
Match Your Ram Dual-Exit Configuration
| Vehicle or layout check | What applies here |
|---|---|
| Truck covered | 2013–2018 Dodge Ram 6.7L Cummins. |
| Illustrated front route | Turbo-connected front pipe; a retained-front-pipe version must match its own starting connection. |
| Rear structure | 5-inch dual exit with a splitter and separate left/right over-axle pipes. |
| Rear supports | Added tailpipe support on both frame rails. |
| Length | Cab/box configuration determines the trial extension layout; measure actual engagement before cutting. |
Before You Remove Anything: This guide covers the 2013–2018 Ram 6.7L Cummins 5-inch dual route. The reference illustration replaces the turbo-connected front pipe as well as the rear system. A kit that retains that front pipe must use its own mating connection. Confirm cab, box length and rear suspension clearance before disassembly.
Cab And Box Layout
| Cab and box configuration | Dual-system length plan |
|---|---|
| Crew Cab / short box | Trial-fit the center extension before the Y-pipe. |
| Crew Cab / long box | Trial-fit the center extension plus the added long-cab section. |
| Mega Cab / short box | Trial-fit the center extension plus the added long-cab section. |
| Regular Cab / long box | The reference mentions possible intermediate plain-end trimming. Check that the selected route matches, then measure with both rear branches supported. |
Ram Dual-Kit Parts Arranged By Branch
| Component name | Illustrated manual reference | How to identify or fit it |
|---|---|---|
| Turbo-connected front pipe | 21151 | Illustrated route uses the stock turbo band clamp. |
| Intermediate pipe | 21452NB | Regular-cab/long-box reference may need plain-end trimming. |
| Crew Cab/short-box extension | 50016 | Trial-fit before deciding final length. |
| Additional long-cab extension | 21053 in the steps | Listed for Crew Cab/long box and Mega Cab/short box; omitted from the packing artwork. |
| Y-pipe | Y500 | Fit behind the center extensions, ahead of both rear branches. |
| Driver-side over-axle pipe / tailpipe | 21668 / 21669 | Uses the matching added support. |
| Passenger-side over-axle pipe / tailpipe | 21666 / 21667 | Uses the matching added support. |
| Added tailpipe supports | Two H4 brackets | Metal inside each frame rail; rubber outward and below it. |
Use the shapes, pipe ends and welded supports in this drawing to match the components listed above.
Prepare The Front Clamp And Both Rear Supports
| Tool Or Equipment | What You Need It For |
|---|---|
| Turbo band clamp | Flat screwdriver, as listed for releasing the stock clamp. |
| Supports and alignment | Stands for the center pipe and both rear branches; approved vehicle supports. |
| Trimming and tightening | Measure before using a saw. Match tools to actual fasteners; no numeric torque is given. |
Start with a cold exhaust. Support the truck by the approved method and support each heavy pipe before release. Never work under a jack alone.
Phase 1: Retain The Turbo Clamp And Fit The Front Route
Installer Tip: Keep both branches adjustable until both added tailpipe supports are fitted. One finished outlet is not a reliable reference while the other side is unsupported.
Step 1: Remove The Stock Route And Keep The Clamp
Start cold and support each stock section. Label and release its electrical and pressure-line connections at their proper connectors. On the illustrated full route, loosen and unlatch the turbo band clamp, freeing it evenly from the mating flange. Save the serviceable matching clamp. Open the downstream joints and lower each supported section without pulling on wiring.
Step 2: Fit The Front Pipe Loosely
Seat the front pipe squarely at the turbo and install the retained matching band clamp. Snug it enough to hold the pipe while keeping it adjustable. Check clearance beside the frame and bellhousing before adding the intermediate section.
Step 3: Add The Intermediate Pipe
Join the intermediate pipe behind the front section and seat its hangers. Trial-fit the center and rear layout before marking any trim. The reference mentions possible plain-end shortening for a regular-cab/long-box arrangement; that is a fit instruction for a matching route, not proof that every kit fits that cab.
Phase 2: Confirm The Center Length And Install Both Rear Supports
Step 4: Confirm The Extension Set
The illustrated Crew Cab/short-box route uses the center extension; Crew Cab/long box and Mega Cab/short box add the long-cab section. Identify them in the table, then trial-fit the splitter and both rear branches. A missing extension needs added matching length, not a cut or deeper stretching of the rubber mounts.
Step 5: Fit The Splitter And Driver-Side Axle Pipe
Fit the Y-pipe behind the center extensions. Add the driver-side over-axle pipe to its matching outlet and seat the stock overhead support. Where required by this illustrated route, move the unused original rubber blocks to the factory supports ahead of the rear axle. Do not add an unexplained pipe because of a stray packing label.
Step 6: Mount Both Added Tailpipe Supports
Fit one added tailpipe support inside each frame rail at the illustrated mounting locations. The rubber faces outward and below the frame. Check both sides before inserting hardware. Seat both supports before fitting and leveling the tailpipes; do not drill another brand’s bracket pattern into this route.
Phase 3: Finish The Two Branches And Set Their Height
Step 7: Finish The Driver Side
Connect the driver tailpipe to its over-axle bend and seat the rod in the added driver-side rubber support. Keep the joint adjustable while fitting the opposite branch.
Step 8: Fit The Passenger Side
Fit the passenger over-axle bend and matching tailpipe to the Y-pipe. Seat the added passenger support, then compare both outlets with the splitter and branch joints still loose.
Use Both Rear Branches to Set the Center Length
Keep the Y-pipe and both branch joints adjustable. Level the outlets with all rear supports seated, then measure the center gap and actual engagement at every extension joint once.
Only trim an allowed plain end after the full trial fit. Keep sockets, bends and welded hangers. Deburr and refit; recheck that rotating one branch does not pull the other outlet out of position.
Step 9: Check Clearances And Tighten
Check the frame and bellhousing near the front. At the rear, check brake lines, parking-brake cables and the axle vent. Tighten the turbo joint first, then the right side and left side, using the proper specs.
Final Check: Two Rear Supports And A Clear Rear Route
- Center route: Cab/box extensions trial-fitted before the splitter is located and any trim is marked.
- Added supports: One inside each frame rail, rubber outward and below the rail.
- Branch pairing: Driver and passenger over-axle/tailpipe pairs match their own routes and supports.
- Clearance: Frame, bellhousing, brake lines, parking-brake cables and axle vent checked with both outlets level.
Before use, have the joints checked for leaks with the proper shop method. Do not run the engine in a closed space. If there is a new rattle, soot trace or loose support, let the exhaust cool and correct the cause. Follow the supplied hardware maker’s heat-cycle recheck instructions.
Troubleshoot The Splitter, Rear Mounts And Exits
| What you find | What to check before changing parts |
|---|---|
| One branch will not reach its support | Check left/right pipe pairing and bracket orientation before changing center length. |
| Center too long on a regular-cab truck | Locate both rear branches first, then measure a permissible plain-end trim. Do not cut a welded hanger or expanded socket. |
| Brake hose or axle vent contacts a bend | Correct pipe rotation and route before tightening. Do not let a brake line hold the exhaust away from the axle. |
Choose Turbo Back Dual / 5'', when the job needs a replacement downpipe and two rear exits. The link opens that option. Confirm the extension contents for your cab and box before ordering. View Turbo Back Dual / 5''
[[product-recommend:1]]Before Use: Calibration And Leak Checks
Arrange the compatible calibration and any device or service your exact package needs before use. Exhaust fitting does not include ECU programming. Diagnose warning lights, reduced power or leaks before operating the truck.
Conclusion
Both outlets should sit level after both added tailpipe supports and all stock mounts are seated. Check the frame, brake lines, parking-brake cables and axle vent before tightening. Finish the right and left branches in the order described above.
For related parts on the same platform, browse 2013–2018 Ram Cummins parts.
Choose The Ram 5-Inch Dual Route
Use the vehicle and option table above to match your build. The collection includes other pipe sizes and layouts, so keep the exact option name with your parts list.
References
MBRP Ram dual-rear installation reference — Cross-check the applicable support and routing notes; do not transfer another system’s cut lengths or hardware settings.
- SPEtuner: "ES08676S5.0 illustrated installation instructions." Available from SPEtuner installation PDF.
- U.S. Environmental Protection Agency: "EPA Fact Sheet re Aftermarket Defeat Devices and Tampering." Available from U.S. Environmental Protection Agency.
- Cover photo: "HJUdall: "16 Ram 2500 Laramie.jpg — CC0. Layout added; vehicle photo retained. http://creativecommons.org/publicdomain/zero/1.0/deed.en." Available from Cover photo: HJUdall.
FAQ
Q: Does The Ram Dual Route Need Added Supports On Both Sides?
A: Yes. This illustrated route uses one added tailpipe support inside each frame rail, with rubber outward and below the rail.
Q: What If The Long-Cab Center Section Is Too Short?
A: Check the extra long-cab extension, pipe order and supported rear position. Crew Cab/long box and Mega Cab/short box use added length in this reference. Cutting cannot fill a missing gap.
Q: Why Does One Ram Tailpipe Move When I Adjust The Other?
A: Both branches join the Y-pipe. Keep that splitter adjustable, seat both rear supports and level the outlets together before locking either branch down.
Q: Which Way Do The Added Rear Rubber Mounts Face?
A: Outward and below the frame in the illustrated arrangement, with the metal brackets inside the frame rails.
Q: How Do I Identify The Driver-Side Rear Branch?
A: Match the driver-side over-axle bend and its tailpipe to the layout drawing and added support. Do not swap them with the passenger pair.
Q: Why Does One Tailpipe Sit Lower?
A: Check both added support positions, rubber seating and the side-specific pipe order. Set both outlet heights while the Y-pipe and branch joints are still loose.
Lars
Diesel Performance Engineer | 15+ Years Experience
"Empower Your Beast: Run Cooler, Pull Harder, Last Longer."
