SHW BRR48504 Rear Right Cross-Drilled Lightweight Rotor 385x24 BMW X5M X6M

Vehicle Fitment

• 2015-2018 BMW X5 M (F85) - 4.4L S63 twin-turbo V8, all configurations
• 2015-2018 BMW X5 M Competition (F85) - 4.4L S63 twin-turbo V8
• 2015-2019 BMW X6 M (F86) - 4.4L S63 twin-turbo V8, all configurations
• 2015-2019 BMW X6 M Competition (F86) - 4.4L S63 twin-turbo V8

Fitment Notes

• F85 X5M production ended after the 2018 model year; F86 X6M production ran through 2019; these are separate chassis codes despite sharing the same underpinnings and brake specification
• Rear right (passenger side) only - one rotor per order; the matching rear left rotor is SHW BRL48503 (OE# 34212284903); a complete rear axle replacement requires one of each
• Sold individually - one rotor per order
• OE replacement - replaces BMW OE part number 34212284904; SHW is the OEM supplier of this rotor to BMW for the F85/F86 rear brake specification
• Verify brake specification - confirm your vehicle's standard iron brake configuration; if equipped with optional M Carbon Ceramic Brakes, a different rotor specification is required and the BRR48504 is not compatible
• Not interchangeable with F95/F96 rear rotors - the successor F95 X5M / F96 X6M (2020+) uses a different rear rotor specification (380mm x 28mm, BRR43508); despite visual similarity, these rotors are not cross-platform compatible

Features

• True OEM-source rotor - SHW (Schwabische Huttenwerke) is the direct OEM supplier of this rotor to BMW as factory-installed equipment on the F85 X5M and F86 X6M rear brake system; the BRR48504 is the same part produced at the same facility to the same specification as the rotor installed on these vehicles in production; the SHW Performance consumer product line provides access to this factory-correct part without the dealer price premium
• Cross-drilled lightweight composite construction - the BRR48504 uses a lightweight composite design with cross-drilled friction surface; the cross-drilled holes provide outgassing channels for brake pad vaporization byproducts during sustained heavy braking, maintaining consistent friction surface contact and reducing the gas cushion effect that can momentarily reduce pad bite during prolonged high-temperature braking cycles; the lightweight composite construction reduces unsprung rotational mass at the rear axle compared to an equivalent full-iron monobloc rotor at this diameter
• 385mm x 24mm ventilated disc - the 385mm rear diameter on the F85/F86 X5M/X6M is a large rear rotor specification appropriate for these vehicles' considerable mass and performance demands; the ventilated internal vane structure provides continuous cooling airflow through the rotor body under driving conditions, drawing heated air away from the friction faces and maintaining more stable rotor temperatures during repeated braking cycles; the 24mm ventilated thickness on this rear rotor is thinner than some front rotor specifications, reflecting the rear axle's lower heat generation relative to the front under most braking scenarios while still providing meaningful thermal mass for track and aggressive street use
• SHW manufacturing quality - every SHW rotor is produced at SHW's integrated German facility where raw material sourcing, iron foundry, machining, and inspection are all performed under the same quality management system that supplies BMW's OEM production lines; dimensional accuracy, metallurgical consistency, and surface finish are controlled to the same standards whether the rotor ships to a BMW assembly plant or to a consumer through the SHW Performance distribution network
• Directional rear-right specific design - the internal ventilation vane geometry is optimized for the rotational direction and position of the right rear wheel; install on the right rear position only; do not install on the left rear

Specifications

• Part Number: BRR48504
• Brand: SHW Performance (Schwabische Huttenwerke, Germany)
• Product: Cross-Drilled Lightweight Composite Ventilated Disc Brake Rotor
• Position: Rear Right (Passenger Side)
• Rotor Diameter: 385mm
• Rotor Thickness: 24mm (ventilated)
• Surface: Cross-Drilled
• Construction: Lightweight Composite
• Application: 2015-2018 BMW X5M / X5M Competition (F85); 2015-2019 BMW X6M / X6M Competition (F86)
• OE Part Number: 34212284904
• Matching Left Rear Rotor: SHW BRL48503 (OE# 34212284903)
• Quantity: Sold individually (1 rotor per order)

Included Components

• 1x SHW BRR48504 Rear Right Cross-Drilled Lightweight Composite Brake Rotor

Product Description

The SHW BRR48504 is the rear right cross-drilled lightweight composite brake rotor for the 2015-2018 BMW X5M (F85) and 2015-2019 BMW X6M (F86) - measuring 385mm in diameter and 24mm in thickness. SHW (Schwabische Huttenwerke) is the direct OEM supplier of this rotor to BMW as factory-installed equipment on the F85/F86 rear brake system, and the SHW Performance consumer product line makes this same OEM-specification part available directly to end consumers.

The BRR48504 uses a lightweight composite construction with a cross-drilled friction surface - the factory specification for the F85/F86 X5M rear brakes. The cross-drilled holes maintain consistent friction surface contact and provide outgassing channels during sustained high-temperature braking, while the lightweight composite design reduces unsprung rotational mass compared to an equivalent full-iron monobloc rotor of the same diameter. The internal vane structure provides continuous cooling airflow through the rotor body during operation. The right rear position is directional and position-specific; the matching left rear rotor is BRL48503 (OE# 34212284903).

The BRR48504 is specific to the first-generation high-performance X5M/X6M (F85/F86, 2015-2018/2019); it is not interchangeable with the successor F95 X5M / F96 X6M (2020+), which uses a different rear rotor specification (380mm x 28mm, BRR43508). Replaces BMW OE part 34212284904. Sold individually; a complete rear axle replacement requires one BRL48503 and one BRR48504. Standard iron brake system only.