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 C400, C450, C43, E400 & E43
• Crisscross welding to strengthen turbo flange
• One Piece Design
• Machine Welding
• In House Research and Development
• 3D Scanning & Reverse Engineering
• 100% OEM Fitment

R&D and 3D Scanning

Stone Exhaust engineers use reverse engineering by 3D scanning OEM parts to understand their functionality and identify weaknesses. Data has been collected continuously in order to analyze factors such as pipe diameter, route and degrees of the bending angles of the Exhaust System found on the Mercedes-Benz M276 & M276 RHD C400, C450, C43, E400 & E43. 

During R&D, Stone Exhaust utilizes the 3D simulation software to stimulate the exhaust gas flow movement, thermal and pressure rise zone. Progressive improvements were continually made until the optimal performance was achieved.

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. 

M276/M276 RHD Engine

Mercedes-Benz C-Class

• W205 C400 4MATIC (2015+)
• W205 C450 AMG 4MATIC (2015+)
• W205 AMG C43 4MATIC (2016+)
• S205 C400 4MATIC (2015+)
• S205 C450 AMG 4MATIC (2015+)
• C205 C400 4MATIC (2015+)
• C205 AMG C43 4MATIC (2016+)

 Mercedes-Benz  E-Class

• W213 E400 (2016+)
• W213 E450 (2016+)
• W213 E43 (2016+)
• C238 E400 (2016+)
• C238 E450 (2016+)
• C238 E43 (2016+)

M210P (M276)

M210PR (M276 RHD)

Manufactured by

Stone Exhaust

Warranty

Stone Exhaust 2 Year Warranty

Mercedes Benz S205 C43 Turboback STONE EXHAUST Sound