MINI R5x Cooper S JCW & Peugeot THP Stainless Steel Performance Downpipe

Improve the performance and efficiency of your turbocharged MINI or Peugeot with this premium Stainless Steel Performance Downpipe. Designed for selected MINI R55, R56, R57, R58 and R59 Cooper S & John Cooper Works (JCW) models, along with Peugeot 207, 208, 308, 508 and RCZ THP models, this downpipe features a high-flow catalytic converter that reduces exhaust restriction and improves turbocharger efficiency.

Constructed from premium T304 stainless steel using mandrel-bent tubing, precision TIG welding and CNC-machined flanges, this performance downpipe delivers outstanding durability, corrosion resistance and excellent fitment. It is an ideal upgrade for enthusiasts looking to maximise the performance of their turbocharged Prince/THP engine.

Key Features

• Premium T304 stainless steel construction.
• Integrated high-flow catalytic converter.
• Mandrel-bent tubing for maximum exhaust flow.
• Precision TIG welded construction.
• CNC-machined flanges for accurate fitment.
• Designed for turbocharged MINI and Peugeot THP engines.
• Corrosion-resistant finish for long service life.
• Suitable for standard and performance-tuned vehicles.

Benefits

• Improves turbocharger spool time.
• Reduces exhaust back pressure.
• Enhances throttle response.
• Supports increased horsepower and torque.
• Produces a deeper, more aggressive exhaust note.
• Excellent upgrade for Stage 1 and Stage 2 ECU tuning.
• Improves overall engine efficiency and performance.

Vehicle Compatibility

• MINI Clubman R55 Cooper S & JCW.
• MINI Hatch R56 Cooper S & JCW.
• MINI Convertible R57 Cooper S & JCW.
• MINI Coupe R58 Cooper S & JCW.
• MINI Roadster R59 Cooper S & JCW.
• Peugeot 207 GT / GTi THP.
• Peugeot 208 GTi THP.
• Peugeot 308 THP / GT / GTi.
• Peugeot 508 THP.
• Peugeot RCZ THP.

Please verify compatibility using your VIN, engine code and existing exhaust configuration before purchasing. Fitment may vary depending on production year, engine variant and emissions specification.

Performance Advantages

• Improves exhaust gas flow immediately after the turbocharger.
• Reduces turbo lag and improves boost response.
• Supports Stage 1, Stage 2 and Stage 3 ECU tuning.
• Works with upgraded intercoolers, intake systems and turbochargers.
• Improves engine breathing throughout the rev range.

Installation Information

• Professional installation is recommended.
• ECU tuning is recommended to maximise performance gains.
• Software calibration may be required to prevent catalyst efficiency fault codes.
• Replace exhaust gaskets and mounting hardware during installation.
• Ensure compliance with local emissions regulations before installation.

Why Upgrade to a Performance Downpipe?

A high-flow performance downpipe is one of the most effective upgrades for turbocharged MINI and Peugeot THP engines. By reducing exhaust restriction immediately after the turbocharger, it improves spool time, throttle response and power delivery while producing a more aggressive exhaust note. Manufactured from premium T304 stainless steel, this downpipe offers exceptional durability, OEM-style fitment and excellent performance for both daily-driven and enthusiast vehicles.