Ferrari SF90 Rear Window

the Rear Window (Engine Compartment Lid Glass) for the Ferrari SF90 Stradale and Spider is a specialized component designed to showcase the 4.0L V12 hybrid powertrain while managing the intense heat of the “Hot V” turbo configuration.

Unlike standard glass, the SF90 rear window is an aerodynamic and thermal management piece.

1. Technical Identification & Variants

There are two primary versions of the rear glass depending on whether you have the standard car or the track-focused package:

• Stradale/Spider Standard Glass: A high-clarity, tempered safety glass with specific thermal coatings to prevent heat-related cracking from the engine.

• Assetto Fiorano Lightweight Glass: Part of the “AF” weight-reduction package. This is often made from a thinner, high-strength material (sometimes chemically toughened or Lexan-based) to save weight and lower the car’s center of gravity.

• Spider Specific: The SF90 Spider features a distinct vertical rear window that can be electronically lowered independently of the roof, allowing engine sound into the cabin even when the top is up.

2. 2026 Market Pricing (Estimated USD)

Replacing this glass is expensive, not just for the part but for the specialized adhesive and labor required to ensure a perfect seal against engine bay heat.

3. Common 2026 Issues: Thermal Stress

The SF90’s engine bay is one of the hottest in the Ferrari lineup. By 2026, owners have noted two main issues:

• Heat Cracking: If the engine bay cooling fans fail or if the car is pushed hard in high-ambient temperatures and then shut off immediately, the glass can undergo “thermal shock,” leading to hairline stress cracks.

• Bonding Failure: Following the 812 Superfast recall for rear window detachment, Ferrari updated its bonding procedures. However, in 2026, it is still vital to ensure that any replacement uses the high-temp-specific urethane rather than standard windshield adhesive.