R2P Ceramic-Coated Primary Downpipes for BMW M5 F90 / M8 F91 F92 F93 (102mm) – Maximum Performance for S63 V8 Engine

The R2P Primary Downpipes are a high-performance upgrade for BMW M5 F90 and M8 (F91, F92, F93) equipped with the S63 4.4L Twin-Turbo V8 engine. Manufactured from 304 stainless steel with a 1200°C ceramic thermal coating, these downpipes eliminate restrictions from the factory system and improve exhaust flow, allowing the turbos to spool faster. Their 102 mm (4-inch) diameter and full 3D design without internal reductions ensure optimal flow, while the thermal insulation protects sensitive components in the engine bay and keeps intake air temperatures stable.

Features

• Ceramic coating up to 1200°C: Reduces engine bay temperatures, protects wiring and hoses, and improves intake air density.
• 102 mm (4-inch) diameter: Eliminates factory system restrictions for unobstructed gas flow.
• Complete 3D design: No sharp reductions or choke points that compromise performance.
• Hand-crafted 304 stainless steel: Total corrosion resistance and extreme durability, even under intensive track use.
• CNC-machined V-Band connections: Precise fitment and perfect seal without leaks.
• Compatible with OEM heat shields: Retains factory thermal protection.

Technical specifications

• Brand: R2P
• Material: 304 stainless steel
• Coating: Ceramic heat resistant up to 1200°C
• Pipe diameter: 4 inches (102 mm)
• Product type: Primary downpipe set
• Geometry: 3D design without restrictions

Compatibility

S63 4.4L Twin-Turbo V8 engine:

• BMW M5 (F90): 2018 - 2020
• BMW M8 Coupé (F92): 2019 - 2020
• BMW M8 Cabrio (F91): 2019 - 2020
• BMW M8 Gran Coupé (F93): 2019 - 2020

Performance

The R2P downpipes remove the restrictive primary catalytic converters from the factory system, enabling gains of up to 50 HP and 80 Nm of additional torque with Stage 2 tuning. Unlike uncoated alternatives, these downpipes keep intake air temperatures (IAT) stable, preventing power loss from excessive heat. Additionally, the V8 engine sound becomes deeper and more aggressive, highlighting the sporting character of M models.

FAQ

• Is ECU tuning required? Yes. To eliminate the check engine light (CEL) and extract full potential, Stage 2 tuning is recommended.
• What are the benefits of the thermal coating? It protects wiring and hoses from radiant heat from the turbos, and maintains exhaust gas velocity to improve turbo response.
• How does the sound change? Produces a much deeper and more aggressive V8 note, emphasizing the character of M models.

Shipping & warranty

• Availability: In stock for immediate shipping
• Shipping: Fast and secure
• Warranty: Perfect fitment guaranteed and certified thermal resistance

This product is intended for competition or closed-circuit use. Consult local regulations before installation.