Click to open expanded view

Kline Exhaust System McLaren 650S

SKU: KL-MC-650S-RS-I
Price
$6,195.00

Select Material:

Inconel
Currently Backordered - You can still place your order and we'll ship your order as soon as the product is back in stock!

Need some product help?
Installation Services

Don’t worry about the hassle — let our expert team at Forza Motorworks handle the installation for you. Our professional installation ensures everything fits and operates exactly as intended, giving you clean, factory-quality results, proper wiring or mounting, and avoiding the risks of DIY mistakes. You’ll save time, avoid frustration, and get peace of mind knowing the job is done right the first time. Contact us to learn about our installation services and enjoy a seamless upgrade from day one.

FAQ

Shipping Information
For items that are in stock, purchases made after 9am EST will be usually be shipped out in the next 1-2 business days. Please inquire to confirm lead times if you have specific time constraints. Orders will be sent via signature required at our discretion unless otherwise requested.

International Shipping
Any and all customs duties, taxes, import fees, and/or tariffs assessed in connection with the purchase shall be the sole responsibility of the customer/end user.

Return Policy
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return. To be eligible for a return, your item must be in the same condition that you received it, unused and in its original packaging. All returns are subject to a restocking fee based on item and package condition. Buyer is responsible for paying for return shipping costs. If you need a return label, we will email you a return label and deduct cost from refund. Original shipping costs are not refundable. Special order items are not eligible for return.

Cancellation Policy
In order to cancel your order you must email within 24 hours of placing your order or before your order has shipped, whichever occurs first. Special order items are not eligible for cancelation.

Exchange Policy
We have a 30-day exchange policy, which means you have 30 days after receiving your item to request an exchange. To be eligible for an exchange, your item must be brand new in box. Buyer is responsible for paying all shipping costs to exchange product.

Product Description

The Kline Innovation Exhaust System for the McLaren 650S is a high-end performance upgrade designed to transform both exhaust flow and sound character on the 3.8 L twin-turbo V8 supercar. Engineered to replace the restrictive factory exhaust from the midsection rearward, this system features Kline’s signature 1D CLR tight-radius X-pipe and modular catalyst options to deliver a cleaner, louder, and more exotic exhaust note. Premium construction options, including lightweight Inconel 625 superalloy or durable 304 stainless steel, help reduce overall system weight while enhancing exhaust gas velocity and tonal quality. Whether you’re after enhanced throttle response or a race-inspired soundtrack, this exhaust system elevates the auditory and performance presence of the 650S.

Fitment Notes

  • Specifically designed for McLaren 650S (2014–2017) applications.

  • Works with stock or aftermarket downpipe configurations; various downpipe options can be selected (e.g., 100 cell or 200 cell high-flow cats, racing pipe options). 

  • Professional installation recommended to ensure proper alignment and secure fitment. 

Included

  • Kline Innovation full exhaust system for rear section (midpipe and x-pipe integrated). 

  • Mounting hardware for direct installation. 

  • Optional modular high-flow catalysts or racing pipe components (selected at purchase).

Product Specs

  • Construction Materials: Inconel 625 superalloy (lightweight, high strength) or 304 stainless steel (durable, reliable). 

  • Weight (Inconel): ~5.5 kg full system. 

  • Weight (Stainless steel): ~11 kg full system. 

  • X-Pipe Diameter (Racing specification): 70 mm.

  • Catalyst Options: Modular design supporting 100 cell or 200 cell high-flow catalysts, or racing pipes for maximum flow. 

  • Vehicle Compatibility: McLaren 650S with 3.8 L twin-turbo V8.

Product Features

  • Signature 1D CLR X-pipe for optimized exhaust scavenging and exotic tonal quality. 

  • Modular catalyst section allows quick interchange between high-flow cats or racing pipes based on driving goals. 

  • Material choice options:

    • Inconel 625 for maximum strength, heat resistance, and significant weight reduction. 

    • 304 stainless steel for balanced performance and durability. 

  • Performance gains: Up to ~18 hp and 25 Nm with high-flow race catalysts; up to ~35 hp and 40 Nm with racing pipes (figures from Kline Innovation platform). 

  • Enhanced exhaust sound: Freer flow and X-pipe design elevate pitch and presence for a more engaging supercar exhaust note at higher RPMs.