Porsche 718 Cayman & Boxster Turbo Downpipe & Exhaust System – Stainless Steel - RaggDoll Motorsports

Porsche 718 Cayman & Boxster Stainless Steel Turbo-Back Exhaust System

Maximize Flow, Sound, and Performance with a True and proper 3.5” Turbo-Back Design then axel back can either be 3.0 or 3.5” depending on your preference. 

Drop Weight. Boost Power. Eliminate Restrictions.

Transform your Porsche 718 Cayman or Boxster with the RaggDoll Motorsports Stainless Steel Turbo-Back Exhaust System, engineered for high-output street and track builds. This system starts directly at the turbocharger with a true 3.5-inch downpipe as it should (and is the only correct way whether you have a 2.0L or 2.5L), eliminating factory bottlenecks and maximizing exhaust gas velocity from the very first inch.

Designed for the 2.0T Base, 2.5T, and 2.5T GTS platforms, this is a no-compromise exhaust solution for owners chasing real power, sharper response, and a raw motorsport sound.

Why This Turbo-Back Exhaust Exists

Purpose-Built for Unmatched Exhaust Flow

Unlike stepped or necked-down systems, this exhaust maintains a full 3.5” diameter through the most critical section before branching into two optimized configurations based on your horsepower goals:

•  3.0” Mid-Pipe Configuration – Ideal for builds under ~500 HP
• Full 3.5” System – Maximum flow for high-output turbo setups
  

Both configurations delete the restrictive factory Y-pipe and exit through dual 4.0” slash-cut Stainless Steel tips, delivering a clean, aggressive finish.

Why Bigger Matters: Exhaust Flow = Power

Real-world testing at 24 PSI confirms what physics already tells us — pipe diameter and continuity directly impact turbo efficiency and horsepower, even at the same boost pressure.

Test Results:

• 3.0” Downpipe + 3.0” Exhaust = 513 WHP
• 3.0” Downpipe + 3.5” Exhaust = 533 WHP
• 3.5” Downpipe + 3.0” Exhaust = 548 WHP
• 3.5” Downpipe + 3.5” Exhaust = 569 WHP

Takeaway: Larger, uninterrupted exhaust flow unlocks more power, faster spool, and reduced backpressure. 

Key Features & Benefits

• True 3.5” turbo outlet to first V-band (no reducers)
• Titanium or stainless steel construction options
• Saves 65+ lbs vs OEM (titanium configuration)
• Optional 3.0” or 3.5” mid-pipe with resonator
• Dual 4.0” slash-cut titanium exhaust tips
• Raw motorsport tone with no highway drone
• Direct bolt-on fitment for all Porsche 718 models
• Custom catalytic and resonator options available

Who This Is For

Ideal for tuned 718s, upgraded turbo builds, ethanol setups, and track-focused cars looking for maximum exhaust flow, faster spool, and consistent power delivery.

Install & Tuning Notes

Professional installation is recommended. ECU tuning is strongly recommended to fully take advantage of the increased exhaust flow and reduced back-pressure, especially when paired with upgraded turbochargers or fueling modifications.

What’s Included

• 3.5” Stainless Steel downpipe (catted or catless)
• 3.0” or 3.5” mid-pipe with optional resonator
• Dual 4.0” Stainless Steel exhaust tips
• V-band clamps, mounting hardware, and accessories

Optional/required extras: ECU calibration, upgraded turbocharger, high-flow intake and inlet components

Performance, Sound & Reliability Improvements

• Faster turbo spool and sharper boost response
• Increased power across the entire RPM range
• Reduced exhaust gas temperatures and backpressure
• Massive weight reduction over stock exhaust
• OEM-level fitment with zero cutting or modification

Construction & Fitment

• High-grade stainless steel construction
• Precision-welded for strength and longevity
• Designed to withstand high heat and sustained boost
• Direct bolt-on fitment for all 2017+ Porsche 718 Cayman & Boxster
• Compatible with 2.0T and 2.5T engines
• Works with stock and aftermarket turbochargers

Built for Drivers Who Demand More

For Porsche 718 owners chasing serious horsepower, reduced weight, and an unmistakable motorsport sound, the RaggDoll Stainless Steel Turbo-Back Exhaust System delivers without compromise.

Why Choose RaggDoll Motorsports

RaggDoll Motorsports exhaust systems are engineered solutions—not sound-only upgrades.

Real flow improvements.
Track-tested durability.
OEM-level fitment with motorsport intent.

Built differently—because exhaust flow is the foundation of turbo performance.