Mercedes Benz C63 AMG W205 4.0L V8 14-21 – Decat Downpipes

Original price was: £499.99.Current price is: £395.00.

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High-performance 76mm de-cat downpipes for Mercedes C63/C63S AMG (W205/S205/C205). Increases power, improves turbo spool, and delivers a louder, more aggressive exhaust note. Made from TIG-welded T304 stainless steel.

Off-road / motorsport use only. This part removes or alters emissions-control equipment. It is not legal for use on public roads in the UK and a vehicle fitted with it will fail its MOT. Sold strictly for off-road and competition use.

Fitting available at SD Performance

Want your parts fitted? Our Ilford workshop at 96 Goodmayes Road can fit everything in your order. Choose free collection at checkout, then call 020 8194 6688 or WhatsApp 07494 916329 to book a fitting slot.

Categories: C-Class, Downpipes & De-cats Tag: Off-Road Use Only

C63 / C63S AMG De-Cat Downpipes – 76mm T304 Stainless Steel (W205/S205/C205)

Unlock the true potential of your Mercedes-AMG with our high-performance 76mm de-cat downpipes, engineered for maximum power, sound, and turbo efficiency. Designed for W205, S205, and C205 C63 and C63 S AMG models, these downpipes are built from premium T304 stainless steel and TIG welded in-house for race-grade durability.

Performance Benefits:

+20BHP gains with stock tune
Up to +115BHP with Stage 2 mapping
Faster turbo spool and sharper throttle response
Aggressive exhaust note with deep, race-inspired tone
Reduced backpressure & lower EGTs for enhanced turbo performance
Significant weight savings over factory catalytic converters

Product Details:

CNC-machined from 76mm mandrel-bent T304 stainless steel
Direct fit to factory V-band turbo flange
Includes stainless mid-pipe clamp, bolts, and bracket hardware
Compatible with:
- C63 AMG (W205 / S205 / C205)
- C63 S AMG (W205 / S205 / C205)

Note: Professional installation is recommended due to slight variations in OEM exhaust alignment.

Perfect for serious enthusiasts and tuners, this is a must-have upgrade to unleash the full performance and sound of your C63 or C63S AMG.

Delivery & returns

Free UK delivery on every order.
Free collection from our workshop at 96 Goodmayes Road, Ilford, IG3 9UZ. Fitting is available, just ask.
14 days to change your mind from the day your order arrives.
Faulty or wrong item? We will put it right under the Consumer Rights Act.

Read our Returns & Refunds policy or call 020 8194 6688.