Introduction: Why the AWE Track Edition Exhaust for the F87 M2

The BMW F87 M2 is already a celebrated performance coupe, but many owners find its factory exhaust too restrained. The AWE Track Edition Exhaust offers a significant upgrade for those who prioritize weight savings, a more aggressive tone, and track-oriented performance. Designed as a cat-back system, it replaces the restrictive factory muffler and resonator with a straight-through, valveless design that maximizes flow and reduces weight. Unlike the AWE SwitchPath, which incorporates a valved bypass, the Track Edition is a dedicated single-mode system that delivers a raw, uninhibited exhaust note—ideal for weekend track days or drivers who want maximum auditory feedback without electronic complexity.

Installation is a straightforward process that can be completed with basic hand tools, but attention to detail is required to ensure perfect fitment and sealing. This guide expands on the factory installation notes to provide torque specifications, alignment tips, and post-installation checks that will help you achieve a leak-free, rattle-free install. Whether you are a seasoned DIYer or a first-time exhaust swapper, following these steps will give you the confidence to upgrade your M2’s sound and performance.

Tools and Materials Needed

Essential Tools

  • Metric socket set: 13mm, 15mm, and 18mm sockets
  • Metric combination wrenches: 13mm and 15mm
  • Torque wrench capable of 15–45 ft-lbs
  • Floor jack and two jack stands (minimum 3-ton capacity)
  • Rubber mallet (for aligning hangers)
  • Pair of work gloves and safety glasses
  • Penetrating oil (e.g., WD-40 or PB Blaster)
  • Exhaust hanger removal tool (steel pry bar or dedicated hanger pliers)
  • Flat-blade trim removal tool (for rear bumper cover if removal is needed)
  • Digital calipers or ruler (for verifying flange alignment)
  • Anti-seize compound (for exhaust hanger rods)
  • Shop rags and brake cleaner (for cleaning flange surfaces)

Hardware Included with the AWE Track Edition

  • Stainless steel clamp(s) for mid-pipe connections
  • Bolts and nuts for downpipe attachment
  • Replacement gaskets (if not using factory gaskets)

Note: The AWE Track Edition is a cat-back system; it attaches directly to the factory downpipes. No cutting or welding is necessary. All mounting points use the factory hanger locations.

Preparation: Safe Jacking and Underside Access

Park the F87 M2 on a level concrete surface and engage the parking brake. Disconnect the battery’s negative terminal only if you plan to remove any electronic modules (not required for exhaust installation, but good practice if working near sensors).

Locate the factory rear jacking points: the rubber lift pads on the side sills, just behind the front wheels and just ahead of the rear wheels. Place the floor jack under one of the rear side lift pads and raise the vehicle until the tire is off the ground. Place a jack stand under the designated lift point on the rear subframe or factory jack pad area. Repeat for the other side. Never work under a vehicle supported only by a jack.

Once the car is stable on stands, give the underside a visual inspection. Spray penetrating oil on all exhaust hanger rubber mounts and on the flange bolts connecting the factory exhaust to the downpipes. Allow it to soak for 5–10 minutes before loosening.

Step 1: Remove the Factory Exhaust System

1.1 Loosen the Downpipe Flange Bolts

Using a 15mm socket and wrench, loosen the two bolts securing the factory mid-pipe to each downpipe (four bolts total). Do not remove them completely yet; leave them threaded a few turns. If the bolts are rusted, apply more penetrating oil and use a breaker bar. The factory bolts are torqued to approximately 35 ft-lbs.

1.2 Disconnect the Factory Hangers

Under the rear of the car, you will find four rubber hanger mounts supporting the exhaust system—two on the rear muffler section and two on the mid-pipe. Using an exhaust hanger removal tool or a long flat-head screwdriver, pry the rubber mount away from the metal hanger rod. Work slowly to avoid tearing the rubber. If the rubber is stubborn, spray with lubricant.

Tip: Label the hangers or take a photo for reference. The AWE system uses the same hanger locations, so orientation matters for final alignment.

1.3 Lower the Factory Exhaust

With all hangers detached and the downpipe bolts loosened, support the muffler section with your hand or a helper. Remove the downpipe bolts completely. Lower the factory exhaust carefully—it is heavy and can swing unexpectedly. Slide it out from under the vehicle. The stock muffler alone weighs approximately 35–40 lbs; the full cat-back system is around 50 lbs.

Note: Be mindful of the oxygen sensor cables. On F87 M2 models, the secondary O2 sensors are mounted in the mid-pipe section. Disconnect the sensor connectors inside the cabin or along the frame rail if necessary. However, most aftermarket cat-back systems reuse the same sensor ports; you may simply unclip the sensors from the factory exhaust and transfer them later.

Step 2: Prepare for AWE Track Edition Installation

2.1 Clean the Flanges and Hanger Rods

Use brake cleaner and a rag to clean the downpipe flanges where the new exhaust will attach. Remove any old gasket material or carbon deposits. Inspect the downpipe flanges for warping or damage. If using new AWE-provided gaskets, ensure they match the flange shape. Factory gaskets may be reused if in good condition.

2.2 Test-Fit the AWE System

Before tightening any bolts, loosely assemble the AWE Track Edition sections on the ground to verify alignment. The system typically ships in two pieces: a mid-pipe and a rear muffler section. Slide the connecting clamp over the mid-pipe end but do not tighten. Ensure the hanger rods on the muffler section correspond to the factory rubber mounts. If any rod appears misaligned, use a rubber mallet to gently adjust it.

Key difference: The AWE Track Edition uses a straight-through muffler design with no Helmholtz resonator. This means potentially more drone inside the cabin at highway speeds. Drivers who frequently commute may prefer the AWE SwitchPath, but the Track Edition is built for pure sound and weight savings.

Step 3: Install the AWE Track Edition

3.1 Mount the Mid-Pipe

Lift the mid-pipe section into position and loosely attach it to the downpipe flanges using the provided bolts. Hand-tighten only. Attach the rubber hanger mounts to the mid-pipe hanger rods.

3.2 Attach the Rear Muffler Section

Slide the rear section’s connecting pipe into the mid-pipe. Align the muffler hanger rods with the remaining rubber mounts. You may need to push the muffler forward or backward to achieve a symmetrical tip position relative to the bumper cutouts. Use a rubber mallet to adjust the hanger angles.

Fitment tip: The F87 M2’s rear bumper valance has distinct left and right exhaust cutouts. AWE’s dual 3-inch tips should sit centered and slightly recessed—not protruding. Rotate the tips before tightening the clamp to fine-tune the look.

3.3 Connect and Tighten All Fasteners

Once the tips are positioned correctly, tighten the following in order:

  • Downpipe-to-mid-pipe bolts: 35–40 ft-lbs using a torque wrench.
  • Mid-pipe-to-muffler clamp: 40 ft-lbs (or as specified by AWE; usually a T-bolt clamp).
  • Hanger rods: No torque spec—ensure the rubber mounts are firmly seated and the metal rod is fully through the mount’s opening.

Critical: Recheck all connections after 100–200 miles of driving, as exhaust components may settle.

Step 4: Lower the Vehicle and Perform Leak Check

Remove the jack stands and lower the car to the ground. Start the engine and let it idle. Walk around the vehicle and listen for any hissing sounds indicating exhaust leaks at the flanges or clamps. If you suspect a leak, use a shop rag to carefully block the tailpipes—listening for escaping gas upstream. Tighten clamps or bolts as needed.

Rev the engine gently to 2000–3000 RPM and listen for unusual rattles. Ensure the exhaust does not contact the underbody, heat shields, or chassis. The AWE Track Edition is designed to clear the factory under-traps and rear subframe, but aftermarket diffuser or chassis modifications may require adjustment.

Step 5: Post-Installation Sound and Performance Observations

Sound Character

The AWE Track Edition is one of the loudest cat-back options for the F87 M2. Expect a deep, aggressive tone at idle that builds to a sharp, unrestricted scream at high RPM. The valveless design means there is no quiet mode. Cold starts are notably louder than stock. Inside the cabin, drone is present between 2000–3000 RPM under light load—this is expected given the straight-through muffler. If drone sensitivity is a concern, consider the AWE SwitchPath with its optional drone-canceling resonator.

Weight Savings

The Track Edition saves approximately 15 lbs over the factory system due to its simplified construction (no valves, fewer chambers). While not a massive reduction, it is unsprung mass removed from the rear axle, aiding in acceleration and handling response.

Performance Gains

Dyno tests show a gain of 8–12 horsepower and 10–15 lb-ft of torque on the S55 engine (standard on F87 M2 Competition). Earlier M2 models with the N55 engine may see slightly smaller gains. The increased flow also reduces exhaust gas backpressure, improving turbo spool response.

Maintenance and Long-Term Tips

  • Check hardware after heat cycles: Stainless steel clamp bolts can loosen due to thermal expansion. Re-torque to spec after 200 miles.
  • Clean tips regularly: The 3-inch 304 stainless steel tips are polished but will blue with heat over time. Use a metal polish to maintain appearance.
  • Inspect hanger mounts: Rubber mounts degrade with age and exhaust heat. Replace them every 3–4 years to prevent sagging.
  • Consider a tune: For maximum gains, pair the Track Edition with a stage 1 or 2 ECU tune that adjusts fueling and boost targeting.

Common Questions and Troubleshooting

Will this exhaust trigger a check engine light?

No. The AWE Track Edition is a cat-back system that does not remove catalytic converters. The secondary O2 sensors remain in their factory location, so no CEL should appear.

Can I install the Track Edition with an aftermarket downpipe?

Yes. The mid-pipe attaches to factory or aftermarket downpipes via the same 4-bolt flange. However, aftermarket downpipes may reposition the sensors or alter the flange angle, requiring minor adjustments.

Why does my exhaust tip sit unevenly?

This is usually due to a misaligned hanger rod. Loosen the mid-pipe clamp and rotate the muffler section relative to the hanger rubber. Also check that the downpipe flange is fully tightened; a crooked flange can tilt the entire system.

It depends on local noise ordinances. The system is not equipped with a muffler or resonator; in many areas, it exceeds 95 dB at idle and 100+ dB under throttle. Some track days enforce sound limits. For street use in noise-regulated areas, the SwitchPath with its bypass valve may be a better choice.

External Resources

For further reading and official specifications, consult the following:

Conclusion

Installing an AWE Track Edition Exhaust on your F87 M2 is a rewarding upgrade that delivers immediate auditory and performance benefits. The process requires patience only in the alignment stage; mechanically, it is a direct replacement. By following the expanded steps above—including proper torquing, hanger lubrication, and post-installation checks—you will ensure a leak-free, rattle-free installation that enhances every drive. Whether you are chasing lap times or simply want to hear the S55 or N55 sing, the Track Edition provides an unfiltered connection to your engine’s character.