Audi A5/S5 B9 (2016-2019) Rears Review — Worth it?
Short answer: If you want a low-cost, quick visual upgrade for the rear lower bumper on an Audi A5/S5 B9 (2016–2019), the KSB Autostyling rear spats/splitters are worth considering. They deliver a sharper look with straightforward installation, but they’re a budget option with trade-offs in fit and long-term durability compared with higher-end alternatives.
Shop NowIntroduction — the problem and why this product exists
Many A5/S5 owners feel the rear profile looks a touch bland stock, especially on models without factory sport packages. Full-body kits and carbon pieces can be expensive and heavy. What many enthusiasts want is a subtle, bolt-on enhancement that adds visual width and a sporty lower diffuser look without a major investment. The KSB Autostyling Audi A5/S5 B9 rear spats aim to fill that niche: lightweight ABS pieces in gloss black that attach to the rear bumper to give a more aggressive stance.
Specifications & Materials
| Product | Audi A5/S5 B9 (2016–2019) Rear Spats / Rear Splitters |
| Brand | KSB Autostyling |
| Material | ABS plastic (lightweight) |
| Finish | Gloss black (paintable) |
| Includes | Rear spats / rear splitters, fixings (self-tapping screws) |
| Fitment | Audi A5 / S5 B9, model years 2016–2019 |
| Installation | Self-tapping screws (basic DIY recommended) |
Real-world experience — Pros & Cons
- Pros
- Immediate visual impact: The gloss black spats visually widen the rear bumper and add a sportier diffuser-like element that suits conservative builds.
- Lightweight and low cost: ABS keeps weight negligible and makes the parts easy to handle during installation.
- Paintable finish: Gloss black works as-is for a subtle look, or it can be prepped and painted to match or contrast your car.
- Kit includes fixings: Comes with self-tapping screws so you don’t have to source hardware separately.
- Simple DIY fitment: With basic tools and a pair of hands, installation can be completed in an afternoon.
- Cons
- Fit and finish variability: As a budget aftermarket piece, expect minor gaps and the need for alignment, trimming, or filler in some cases to achieve a tight OEM-like fit.
- Durability limits: ABS is lightweight and resilient for typical road use, but it’s less impact- and abrasion-resistant than polyurethane or carbon fiber; edges can scuff from curbs or road debris.
- Installation caveats: Self-tapping screws are convenient, but careful drilling or pilot holes are often required. Some installers recommend using 3M double-sided tape plus screws for added security, which isn’t included.
- Gloss black fingerprint and swirl visibility: The gloss finish can show handling marks if not prepped and sealed before installation.
- Not a structural aero upgrade: This is a styling piece — don’t expect measurable aerodynamic gains or high-downforce performance benefits.
Installation notes (practical tips)
- Time: Allocate about 45–120 minutes depending on experience and whether you remove the bumper for easier access.
- Tools: Socket set, screwdrivers, drill with appropriate bits (for pilot holes), masking tape, and optional 3M double-sided tape.
- Prep: Test-fit and mark attachment points before drilling. Clean mounting surfaces and lightly scuff paint where tape or adhesive will contact for better bond.
- Protection: If you plan to paint, do it before installation and allow proper cure time to avoid marring the finish during fitting.
Quick comparison: KSB Autostyling vs. two common alternatives
| Feature | KSB Autostyling Rear Spats | OEM Audi Rear Diffuser/Spats | Maxton Design / Rieger (aftermarket) |
|---|---|---|---|
| Fitment accuracy | Good, may need minor adjustment | Excellent — factory fit | Very good — often better molded, premium fit |
| Material & durability | ABS — lightweight, moderate durability | OEM-grade plastics — high durability | Polyurethane/ABS blends — more impact resistant |
| Finish options | Gloss black (paintable) | Matched factory finishes | Multiple finishes, sometimes matte or gloss |
| Price (general) | Budget-friendly | Premium | Mid to premium |
| Installation | DIY-friendly, screw fitment | Professional fit recommended | Varies; often DIY-friendly but may need shop fitment |
Who is this best for?
- Owners who want an affordable visual upgrade without replacing the bumper.
- DIY enthusiasts comfortable with basic drilling and alignment work.
- Drivers who prioritize styling over track-level aerodynamic performance.
- People on a budget who may later upgrade to higher-end pieces but want a quick aesthetic improvement now.
“A practical, budget-friendly way to sharpen the rear look of a B9 A5/S5, but expect to spend some time on fitment and prep.” — Experienced installer perspective
Final verdict
The KSB Autostyling rear spats for Audi A5/S5 B9 (2016–2019) are a sensible choice if your goal is a cost-effective styling refresh. They deliver the intended visual improvement, are lightweight, and are workable for home installation. However, they’re a budget solution — you should be prepared for minor fitment work and understand that long-term durability will be less than pricier polyurethane or OEM parts. If you want the cleanest fit and longest lifespan, consider OEM or premium aftermarket options; if you want value and a noticeable change, this kit does the job.
Call to action
If you’re ready to upgrade your A5/S5 rear profile, check availability through my store — there are occasional discount codes and special offers available when purchasing through the shop. For best results, plan to paint or prep the pieces before installation and consider adding adhesive tape along with the supplied screws for a secure fit.