Piper Exhaust | Sport Cat Downpipe | Ford Fiesta ST180
TECHNICAL DATA
Unlock Hidden Power | Piper 3" Sports Cat Downpipe for Fiesta ST180
The first major restriction in your Fiesta ST180's exhaust isn't the muffler it's the factory downpipe. OC Motorsport presents the Piper 3" Sports Cat Downpipe, the definitive catalyst for unleashing significant power gains, sharper throttle response, and a truly aggressive exhaust note from your turbocharged engine.
Engineered for performance, this downpipe replaces the restrictive OEM unit with a high-flow 200-cell sports catalyst and massive 3" (76.2mm) stainless steel tubing. This critical upgrade dramatically reduces backpressure, allowing your turbo to spool faster and your engine to breathe more efficiently, paving the way for major gains when paired with a custom remap.
Engineered for Maximum Performance:
Significant Power & Torque Gains: By eliminating the primary exhaust restriction, this downpipe is one of the most effective bolt-on mods for releasing hidden power, especially when tuned.
Faster Turbo Spool: The reduced backpressure allows the turbocharger to spin up more quickly, drastically improving throttle response and reducing lag.
High-Flow 200-Cell Sports Cat: Strikes the perfect balance between massive flow gains for power and environmental consideration, with a deep, race-inspired tone.
Mandatory for Stage 2+ Tunes: This is an essential foundation upgrade for anyone pursuing serious power targets and a full performance exhaust system.
Premium UK Construction: Hand-built from T304 stainless steel for a lifetime of durability and backed by Piper's renowned lifetime guarantee.
**Please note this part will only fit with piper cat back exhaust - it cannot be used with original exhaust system or other cat back exhausts**
It is not designed to be used with the stock exhaust system.
OC Motorsport Exclusive:
This downpipe is precision-built to order to ensure perfect fitment and quality. Please allow 10-14 working days for manufacturing before dispatch.
Specifications:
Product Type: Downpipe with High-Flow Sports Catalyst
Tube Size: 3" / 76.2mm
Flange: 12mm Laser-Cut Mild Steel for a perfect seal
Material: T304 Stainless Steel
Weight: 7 kg
The Foundation of Your Build:
Ready to transform your ST180's response and power? Click 'Add to Cart' to secure this essential performance upgrade. For guidance on building your complete setup, the experts at OC Motorsport are here to help.
Disclaimer: This product is designed for off-road and competition use only. It is the purchaser's responsibility to ensure compliance with all local laws and regulations regarding vehicle modifications and emissions standards for on-road use.
Warranty
Stainless Steel Systems – Lifetime Guarantee*
Manifolds – 18-month Guarantee*
Sports Catalysts – 6-month Guarantee*
Thank you for choosing Piper Exhausts
We guarantee that any part supplied by us will, at our discretion, be repaired or replaced free of charge in the event of an exhaust part which fails solely because of defective materials or faulty manufacturing.
The Purchaser’s statutory rights are not affected by this warranty.
CONDITIONS
- Not valid unless posted or completed online within 21 days of purchase with copy of sale invoice from dealer or entry of a valid invoice or order number to the online form.
- Engine mounts must be checked before the exhaust is fitted.
- In the event of any problem, you are requested to contact the dealer from where the Piper Exhaust was purchased.
- Any part which is subject to a claim must be returned to us promptly at the expense of the customer with:
- A return note including details of fault (this will be sent to you on request).
- Copy of proof of purchase from dealer if not returned with warranty card.
- The failure of any part resulting directly or indirectly from any of the following is specifically excluded from the guarantee:
- Misuse, accident or faulty engine mount, hangers or clamps, excessive vibration, internal explosion or fitting to a vehicle that has been altered from standard.
- Non-standard use, or the fitting of the part to a vehicle for which it was not intended.
- We accept no responsibility for the cost of carriage or in any work involved in reinstalling a new or repaired part.
- If there is a fitting problem, the exhaust must be returned unused and undamaged for inspection. The warranty will be invalidated if the part is modified in any way either by excessive force or heat.
- Exhaust hangers, engine mounts and clamps must be checked at least once every 12 months and repaired as necessary, with details thereof promptly recorded on the back of the guarantee. We accept no responsibility for the cost of these inspections or repairs.
*This guarantee applies for as long as the vehicle remains in the ownership of the original purchaser.
The fitting kit is not covered by this warranty.
WARRANTY REGISTRATION
Existing customers can register their warranty online.
REGISTER WARRANTY

