CV2-6-101 10th Generation Accord Exhaust

First and foremost; THANK YOU for becoming a part of the 27WON Family. We hope to REDEFINE your experience of the aftermarket with the highest level Parts, Customer Service, Packaging, & Support

These instructions were written with a 2021 Accord Sport

Jack up your 10th gen Accord and place your jack stands in the appropriate mounting spots

You can find this in your owners manual

Make sure you have supported your car properly. If done improperly, this could lead to serious injury

The following instructions are shown with no bubble wrap or cardboard for clarity of the installation process

We recommend leaving as much protective bubble wrap/cardboard on the exhaust as possible during install to protect against scratches and dings during the process

Cut holes in the bubble wrap to expose the flanges, hanger rods, and fastening locations

The 27WON packaging is not only designed to get your performance parts to your doorstep safely, but to also provide you with an awesome garage banner and/or comfy cardboard mat to lay on under your car for installation

You can cut out the banner as shown with the orange square

Or you can use the entire unfolded box as a mat to lay under your vehicle

Remove the staples from the box as they don't feel great on your backside...

Locate the Skidtray

Use a #2 Philips head screwdriver to remove the six (6) Philips pan head screws shown in red circles

Use a flathead screwdriver or a prying tool to remove the two (2) plastic push-clips circled in orange

We recommend using a prying tool like the one shown by the green square if you have one

Push clips found in location of orange arrow

Use a large flat head screw driver or prying tool to remove the push-clip from each front wheel well

Once all screws and clips are removed your skid plate will hang as shown. It is not required to remove the entire skid plate

Remove (4) bolts with 12mm ratchet and socket shown

Using a 14mm socket, remove the (3) bolts shown to unbolt the front pipe (not shown) from back part of exhaust (shown)

While not required it's helpful to set up a bungee cord under the front part of the exhaust to support it as the rest of the system is disconnected

Put each end of the cord in the silver pick-up points highlighted in orange circles

We'll show each hanger in the next steps. Hangers can be very difficult to get off. There are a few ways to approach this

First, spray hanger as shown with lubricant. We like foam glass cleaner

Then either use Tongue & Groove Pliers to pry the metal hanger from the rubber bushing/hanger

Or use a exhaust pliers (preferred). You can get these on Amazon for around $20

Using a spray cleaner, lubricate the front hangers and rubber support

Use tongue & groove pliers to press the two outer rods out of the rubber hanger. Leave the hanger on the car for install of the 27WON system later

Shown is the driver-side rear hanger, repeat this for the passenger side

Using a spray cleaner, lubricate the rear hangers and rubber supports

Use tongue & groove pliers to press the rod out of the rubber hanger. Leave the hanger on the car for install of the 27WON system later

Shown is the driver-side forward muffler hanger, repeat this for the passenger side

Using a spray cleaner, lubricate the rear hangers and rubber supports

Use tongue & groove pliers to press the rod out of the rubber hanger, leave the rubber hanger on the exhaust for now. It will be transfer to the 27WON exhaust later

Using a transmission jack, floor jack, or a friend support the OE exhaust in the marked area

If the exhaust is unsupported it will fall and possibly become damaged. If not done yet, make sure you support the OE exhaust

Using a spray cleaner, lubricate the remaining rear hangers and rubber supports

Use tongue & groove pliers to press the rod out of the rubber hanger. Leave rubber on car for install later

With the exhaust unbolted and removed from the hanger supports, remove from the car and set aside

27WON exhaust shrouds are made out of FRP, (Fiber Reinforced Polymer) a common material for many aftermarket body and dress-up components

References for prep, care, and maintenance of FRP and Gel Coat are widely available on the internet

The shrouds arrive in a Gel Coat finish. We recommend they be painted or otherwise protected prior to install

Because these parts are all hand made it is common to see small imperfections. These are not a sign of a defective part and are usually resolved during the preparation for protective painting

While you can install these parts with just the Gel Coat, it's not a very durable finish and the shrouds will quickly show cosmetic defects and fading

For any questions about install or care of this FRP product reach out to our team at 571-271-0271

If you will install shrouds as shipped then skip to step 19

Let shrouds sit in the sun or otherwise warm them up a bit. Don't do this in a damp environment

Make sure the shrouds are dry and stay dry during the preparation process

Lightly scuff the Gel Coat surface. A Scotch Brite pad works well for this. 400 grit sand paper works too

Do not sand through the black Gel Coat

Wipe off particles with a dry cloth

Prime the shrouds with spray primer. Two coats recommended

Select a primer suitable for Gel Coat and Fiberglass

If shroud surface doesn't look good enough, you can sand the primer with 400 grit sandpaper

Apply first coat of finishing paint

Sand lightly with 400 grit sand paper

Let paint dry

Apply second coat of finishing paint

If finish is not as desired, let dry, wet sand with 1000 grit sandpaper and recoat

The next steps will show how to remove an OEM exhaust shroud and replace it with a 27WON shroud

Take a moment to observe the gap between the OE shrouds and the bumpers. This will be helpful later when assessing fitment of 27WON shrouds

The passenger side shroud is shown. Repeat steps 20 to 24 for the driver side shroud before moving on to step 25

Use a flathead screwdriver or panel removal tool to remove the push clip and set aside for later

Locate the 3x 8mm bolts securing the shroud. They are highlighted yellow. The yellow arrows show the two hidden bolts and are then shown more clearly in the other pictures

Use your 8mm wrench or ratchet and socket to remove the 3x bolts. Remove the shroud and then set hardware aside to reuse later

Identify the correct passenger side shroud as shown

Install the 27WON shroud in the reverse order you removed the OEM shroud reusing the 3x 8mm bolts

Torque to snug the 3x bolts

"Torque to snug" is defined as 1/4 to 1/2 more rotation after setting resistance is felt

Reinstall Push Clip by snapping in

Once complete shroud will mount and look as shown

If gap between the bumper and the 27WON shroud does not look good to you or it appears uneven, hold tight. Instructions to correct this come later

Repeat steps 20 to 24 for driver side shroud before moving on to step 25

Skip to step 27 if FRP shrouds fitment is good

Should there be an uneven gap between the top of your shroud and the bumper, the shroud fitment can be adjusted

Cars get in accidents. Bumpers deform over time. There are many reasons why the shrouds may not fit two different cars the same

With the shroud removed from the car grab some small and large pliers. Place the large pliers on a bracket, close to the FRP as shown

Place the small pliers furthest away towards bracket tip end

To adjust the shroud closer to the bumper, bend the small end of the bracket down, to move the shroud away from the bumper bend the small end of the bracket up

Be careful not to apply to much leverage to the bracket when bending as breaking of the FRP can occur

The large pliers are there to keep the force from the small pliers from getting to the FRP

Once the shroud has been adjusted reinstall the shroud and check the fitment

Make sure you are happy with the fitment

Remember how OE fit? These are complex surfaces and gaps can look even from one angle and not another

Shown here is what good fitment looks like from that particular angle

If further adjustment is required repeat step 25 until the desired result is achieved

We recommend connecting the exhaust components as shown rather than installing each component on the car separately

Align the two mid-pipes as shown

Use the hangers for reference

Insert a provided 70mm tri-bolt gasket between the two flanges of the mid-pipes

Align the flanges as shown

Perfect alignment of the flanges is recommended. Even 1mm of misalignment can cause a big fitment issue at the rear of the car

Make sure the exhaust flanges go where the green arrow is indicating when installing hardware in all the flanges of 27WON exhaust system

Install 3 sets of hardware as shown using a 17mm socket and 17mm wrench. Hand-tighten the hardware for now

Use the same tri-bolt gaskets and 3 sets of hardware to attach the driver and passenger side muffler to rearward y-pipe as shown

Install the hardware as using a 17mm socket and 17mm wrench. Hand-tighten the hardware for now

Use tongue and groove pliers or exhaust hanger pliers to remove driver side rubber hanger

Slide hanger onto 27WON exhaust in direction shown

Repeat for other side

Using the same location as before, support the back of your 27WON exhaust with a friend or jack

Support the front section with a bungee chord

Using a spray cleaner, lubricate the rubber hanger

Reinsert the front hanger to the chassis hanger as shown

Use caution not to damage exhaust tips

Using a spray cleaner, lubricate the hanger support for a muffler section

Reconnect the rubber hanger to the exhaust hanger

Repeat this step for the other side

Using a spray cleaner, lubricate the hanger support

Reconnect the rubber hanger to the exhaust hanger

Using a spray cleaner, lubricate the hanger support

Reconnect the rubber hanger to the exhaust hanger

OE Exhaust shown

Repeat on other side

Locate a provided "house gasket" for front-pipe installation

Place "house gasket" on stock front pipe as shown

Place forward mid-pipe over front pipe studs as shown

Torque the three (3) OEM nuts to 32 ft-lbs using the 14mm socket and 3/8 torque wrench

Stand back from the car and verify that the tips are centered and have at least 1/3 inch clearance from the shrouds on both sides

If the tips are sitting high, there may be a rubber hanger that is upside-down. Verify that all hangers are oriented correctly

If the tips are not centered, starting from the rear section, loosen the flange bolts and nuts hardware moving down the system and re-align the flanges

It can be tricky to get all the flanges just so. A very small fitment difference at the front pipe can make a big difference to how the mufflers hang

Once tips are centered, torque down all hardware to 25~30 ft lbs

Check again that exhaust tips are positioned properly

Reinsert the (1) push pins into the mounting spot as shown

Repeat this step on the other side

Reinstall the six (6) Phillips heads screwdrivers circled in orange

Reinstall the two push clips circles in orange

Reinstall the 4x 12mm bolts for the chassis brace and torque to 20 ft/lbs

Start the vehicle to check for leaks or rattles. If none, then take a spin around the block for further verification. If you do find a leak or rattle, please inspect the exhaust further

A leak could be caused by a loose flange bolt, improperly used gasket, or if debris is stuck between the gasket and flange

A rattle could be caused by misaligned pipe or a rubber hanger being orientated incorrectly

Give us a call and we would be happy to help resolve any issues

Exhaust may smoke for the first 30 minutes or so of use. This is normal

Exhaust sound will settle a bit during the first 100 miles of use. This is normal

Your Honda has a cold start system which causes louder exhaust for around 15 seconds when you start your car cold

This completes the installation of your 27WON 10th Generation Accord Performance Exhaust

We hope you were impressed with your 27WON experience and love your new exhaust system for years to come. Email us at sales@27won.com or call us at 571-271-0271 with any questions or concerns

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