In order to get even better efficiency for the section of exhaust turbine, as well as to prevent multiple welding positions in the downpipe section, which generates ash in the pipe while welding, causing bad exhaust efficiency, and then generates vaper lock and thus inability to exhaust, Stone Exhaust uses a variety of smart ideas in downpipe design. The company employs flow velocity measurement software in 3D and the technique of one-piece bend pipes, along with mechanical arms which accurately welds without generating ash in the pipe wall in order to further exhaust efficiency of De-Cat downpipes. It is a perfect and effective product which has surpassed all similar products in the market.

• Catless downpipe for A180, A250, CLA200 & CLA250
• Crisscross welding to strengthen turbo flange
• One Piece Design
• Machine Welding
• In House Research and Development
• 3D Scanning & Reverse Engineering
• 100% OEM Fitment

7 Axis CNC Bending Machine

Stone Exhaust System are constructed utilizing a 7 axis CNC Bending Machine which is the ultimate machine for high levels of precision delivery, necessary for industries such as the aerospace and defense industries.

With the state-of-the-art bending machine, Stone Exhaust has achieved the industry’s standard to an impressive 98% roundness, whilst maintaining the wear of the outer bore at only 25% at 180°. Airflow obstruction and welding fracture problems are prevented by utilizing this technology. With the combination of the CNC Bending machine, Reverse Engineering and 3D Design Scanning, Stone exhaust has created an integrally molded exhaust pipe with an accuracy error under 0.025mm. 

Crisscross and Overlapping Welding Technique

The flange between the turbo and the downpipes reaches extreme temperatures (800℃ to 1100℃) which creates stress on the connection point. By utilizing both welding techniques to increases the width and penetration of welds. This increases the endurance and tolerance of these connection points, leading to quality products with reliable performance.

Direct Spot Welding

Our highly skilled engineers perform direct spot welding to increase product strength. This is undertaken by mechanical welding arms, proven to achieve greater precision and penetration in their welds compared to manual welding, resulting in an end product that is a work of art. 

M270 Engine

Mercedes-Benz

A-Class

• W176 A180 BlueEFFICIENCY (2012+)
• W176 A250 BlueEFFICIENCY (2012+)
• W176 A250 4MATIC BlueEFFICIENCY (2013+)
• W176 A250 Sport  (2012+)

CLA-Class

• C117 CLA200 (2013-2018)
• C117 CLA 250 (2013-2018)
• C117 CLA 250 Sport (Coupé only) (2014-2018)
• C117 CLA 250 4MATIC (2013-2018)
• C117 CLA 250 Sport 4MATIC (2014-2018)
• X117 CLA 250 Shooting Brake (2014-2018)

GLA-Class

• X156 GLA200 (2013+)
  
• X156 GLA250 (2013+)

 Infiniti

 H15

• Infiniti Q30 1.6T (2015+)
• Infiniti Q30S 2.0T (2015+)

M203P

Manufactured by

Stone Exhaust

Warranty

Stone Exhaust 2 Year Warranty

Videos

Mercedes Benz AMG M270 C117 CLA250 with Stone Exhaust Catless DP+Valvetronic Catback Sound