BMW F92 M8 — Best Aftermarket Upgrades
The BMW F92 M8 is the most powerful and most luxurious M car BMW has ever produced. Its S63 twin-turbocharged V8 produces 600bhp in standard form and 625bhp in Competition specification — the same engine that powers the F90 M5, but in a two-door grand tourer body that gives the M8 a visual drama and a driving character that the saloon cannot match. The M8 Competition coupe in particular is a car that combines genuine supercar performance with a level of interior luxury that few dedicated sports cars approach — a combination that occupies a unique position in the current performance car market.
The F92 M8 is produced alongside the F91 M8 convertible and the F93 M8 Gran Coupe — a four-door variant that shares most of the coupe's mechanical specification in a more practical body. This guide focuses primarily on the F92 coupe, with relevant notes on parts compatibility with the F91 and F93 variants where applicable.
Understanding the F92 M8 as a Platform
The F92 M8 is built on BMW's CLAR platform — shared with the F90 M5, the 8 Series range, and several other current BMW models. The S63 V8 is shared with the F90 M5 and shares its basic architecture with the S63 units used in previous-generation X5 M and X6 M models — a well-understood and extensively validated engine platform with a deep and mature tuning ecosystem.
The F92's grand tourer proportions — longer and wider than the M4, with a longer wheelbase and a more luxurious interior focus — create a different visual starting point than the more focused M4. The M8's character as a high-speed GT car rather than a pure sports car informs the most appropriate modification directions — upgrades that enhance its grand tourer character and visual presence rather than converting it into something it was never designed to be.
The F92 M8, F91 M8 convertible, and F93 M8 Gran Coupe share most mechanical components but have different body structures. Exterior parts compatibility between variants needs to be verified — always specify your exact body style when ordering exterior components.
Carbon Fiber Front Splitter
The F92 M8's front end is one of the most imposing in BMW's current lineup — the wide lower intake, the prominent M-specific bumper, and the car's considerable width create a front profile that commands attention. A carbon fiber front splitter addition builds on this foundation, extending the lower bumper line and adding visual mass that grounds the M8's large front end and creates a more planted, purposeful stance.
The M8's grand tourer proportions mean that a front splitter serves a different visual purpose than on a compact sports car. The M8 is already a large, imposing car — a carbon splitter doesn't need to be aggressive to have impact. A well-fitted blade splitter that follows the factory bumper line precisely and adds modest projection below creates exactly the right visual statement for the M8's character — performance-oriented without being overtly aggressive.
For M8 Competition owners who want a more overtly aggressive front end treatment, splitter options with integrated canards and a more pronounced extension are available and reference the M8 GTE racing car's more aggressive aero specification directly.
The F92's front bumper geometry is specific to the M8 platform — it is not shared with the F90 M5 or other F-series BMW models. Always verify F92-specific fitment when ordering front splitter components.
Exhaust Upgrades — The S63 at Its Best
The S63 V8 in the F92 M8 is an exceptional engine whose factory exhaust is, as with all BMW M car exhaust systems, significantly restricted by the noise regulation requirements that BMW must meet across multiple global markets. The M8's grand tourer character makes this restriction feel particularly pronounced — a car with this level of performance deserves an acoustic character that matches it, and the factory exhaust's restraint is the single area where the M8's presentation most obviously falls short of its performance credentials.
A valved cat-back exhaust system is the most appropriate and most impactful exhaust upgrade for the F92 M8. In closed mode it maintains the refinement that the M8's luxury GT character requires — appropriate for motorway cruising, urban driving, and any situation where refinement is the priority. In open mode the S63 reveals the deep, authoritative V8 character that the factory system prevents — a sound that is entirely appropriate for a car of this performance level and that transforms the M8's character from refined GT to something considerably more dramatic on demand.
The M8's longer exhaust path — from the front-mounted V8 back to the rear outlets across the car's considerable wheelbase — creates specific installation considerations that make professional fitting by a specialist with F92 experience essential.
High-flow sports cat downpipes for the S63 in the F92 deliver meaningful power gains that, combined with a supporting ECU remap, transform the M8's already impressive straight-line performance into something that genuinely embarrasses dedicated sports cars. The S63's response to downpipes and a quality tune is as well-documented on the M8 platform as on the F90 M5 — the two cars share the engine architecture and the tuning knowledge transfers directly.
Carbon Fiber Rear Diffuser and Boot Spoiler
The F92 M8's rear end is defined by its wide haunches, its quad exhaust arrangement, and its long, flowing boot lid — grand tourer proportions that create a very different visual opportunity than a compact sports car. Carbon fiber aero additions at the rear of the M8 need to respect these proportions — complementing the car's elegance rather than imposing a more aggressive character that conflicts with what the M8 is.
A carbon fiber rear diffuser replacement transforms the lower rear bumper section significantly. The M8's quad exhaust arrangement — twin pipes on each side — creates a visual symmetry that carbon diffuser designs exploit naturally, and a quality carbon replacement adds depth and race-derived detailing that references the M8 GTE racing car's aero specification.
A carbon fiber boot lid spoiler is one of the most effective single visual upgrades for the F92 M8. The car's long boot lid creates a large, prominent surface where a well-designed carbon spoiler has a proportionally significant visual impact. Low-profile lip spoilers that follow the boot lid's trailing edge work particularly well on the M8's grand tourer proportions — adding aerodynamic punctuation without conflicting with the car's elegance. For owners building a more aggressive visual package, taller blade spoilers on carbon end plates make a bolder statement that suits builds committed to a comprehensive aero direction.
Carbon Fiber Side Skirts
The F92 M8's long wheelbase creates an extensive flank that carbon fiber side skirt extensions exploit effectively. The M8's wide body and long sill section give side skirts a large surface to work with — the visual lowering effect of well-designed carbon skirts on the M8 is proportionally pronounced given the car's considerable length.
Carbon side skirts on the F92 connect the front and rear aero elements cohesively across the car's long body, creating a complete lower body visual package that transforms the M8's profile from elegant grand tourer to something with a considerably more purposeful, performance-oriented character. Combined with a front splitter and rear diffuser the result is comprehensive and cohesive — a car that looks as fast as it is from every angle.
Suspension Upgrades
The F92 M8's factory adaptive suspension is one of the most sophisticated available in any BMW M car — the combination of the car's long wheelbase, its luxurious character, and BMW's latest adaptive damper technology creates a suspension system that manages the M8's considerable size and weight with impressive competence across a wide range of road surfaces and driving styles.
For road-focused M8 owners the factory suspension is genuinely difficult to improve upon significantly in everyday use. The M8's character as a grand tourer means comfort and compliance are as important as handling precision — and the factory system's ability to deliver both simultaneously is one of its most impressive qualities.
For M8 owners who track their car or who want a more aggressive road setup, quality lowering springs offering a 15–20mm drop improve the visual stance and reduce body roll without the complexity of a full coilover conversion. The M8's size and weight create specific spring rate requirements for any lowering solution — always choose products specifically developed for the F92 M8 rather than adapted from other F-series BMW platforms.
Coilover conversion options for the F92 M8 are available from specialist manufacturers with F92-specific development programs. The M8's weight — heavier than the M4 and M5 due to its additional body structure — requires coilover specifications calibrated for this mass rather than those developed for lighter M cars.
Wheel Upgrades
The F92 M8 uses a staggered wheel fitment — wider rear wheels and tyres than front — that reflects the car's rear-biased power delivery and handling balance. Aftermarket wheel options for the M8 need to account for this staggered specification, with different front and rear dimensions required for each axle.
The M8's considerable width — among the widest in BMW's current lineup — means aftermarket wheels with appropriate offsets can fill the arches dramatically. A wheel package that correctly fills the M8's wide arches front and rear transforms the car's visual presence from imposing to extraordinary, creating a stance that reflects the S63's performance capability more completely than the factory wheel fitment.
The 5x112 bolt pattern shared across modern BMW's lineup gives the M8 access to a wide range of compatible aftermarket wheel options. Forged wheels in appropriate M8 load ratings are the premium choice — the weight saving over cast alternatives is meaningful on a car of the M8's mass, with direct benefits for unsprung weight and handling response.
Carbon Fiber Mirror Caps and Interior Trim
The F92 M8 Competition comes with carbon fiber mirror caps as standard — but standard M8 owners and those who want to extend the carbon theme further will find mirror cap upgrades among the most immediately satisfying modifications available. The M8's wide door mirrors are prominent elements of its exterior design — carbon mirror caps are proportionally visible and impactful, particularly on lighter body colours.
Carbon fiber interior trim for the F92 M8 — dashboard inserts, centre console panels, door card accents, gear selector surrounds, and steering wheel elements — builds on the factory's existing carbon content available on Competition and Individual specification cars. For owners who want a more comprehensively carbon-trimmed interior, aftermarket carbon additions create a cabin that better reflects the car's performance specification alongside its luxury credentials.
The M8's interior is already among the most well-equipped and premium environments in BMW's range — carbon additions to this environment serve a different purpose than on a track-focused M3 or M4. The goal is extending the performance aesthetic into a luxury environment rather than stripping luxury for performance focus.
The M8 Competition — The F92 Worth Building
Among F92 M8 variants the Competition specification is the clear build platform of choice. Its additional 25bhp over the standard M8, its more aggressive suspension tuning, its standard carbon fiber mirror caps and interior elements, and its Competition-specific visual package create a starting point that is closer to the car's performance potential than the standard M8.
A comprehensively built M8 Competition — quality exhaust with supporting tune, carbon aero package, lowering springs or coilovers, and appropriate wheels — is a car whose presence and performance are matched in a way the standard specification cannot quite achieve. The total investment required to build an M8 Competition to this level is significant, but the result — one of the most visually dramatic and dynamically impressive grand tourers available at any price — justifies it completely for the right owner.
At Velocity Exhausts all BMW F92 M8 parts are verified for F92-specific fitment and backed by our fitment guarantee. Browse the full BMW F92 M8 collection and build your M8 with confidence.