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- Complete system included downpipes, connector pipes and stainless clamps
- 200 Cell High-Flow Cat
- With Heat Shield
- 100% mandrel bent and TIG welded
- Constructed of low carbon 304 Stainless Steel
- Fits within OEM heat shields
- Bolt-on installation
- Improved exhaust note
- Improved exhaust flow
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Wake up the full power and sound of your twin-turbo V8 with the Untd. Performance Catless Downpipe for the Mercedes-Benz GLC63 AMG. Designed for the M177 4.0L engine, this no-compromise performance upgrade removes the factory catalytic converters, significantly improving exhaust flow, turbo efficiency, and overall engine response—while delivering the raw, aggressive exhaust note that the factory setup hides.
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Unleash the true performance potential of your M276-powered Mercedes SUV with the Untd. Performance Catless Downpipe. Engineered for maximum exhaust flow and rapid turbo response, this race-inspired upgrade removes the restrictive factory catalytic converters—delivering sharper throttle feel, louder and more aggressive exhaust tone, and serious horsepower gains. Whether you drive a GLE 43 AMG or a GLS 450, this is the key to unlocking deeper performance from your 3.0L Bi-Turbo V6.
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Turn up the boost and unlock the true sound and performance of your M270-powered Mercedes with the Untd. Performance Catless Downpipe. Designed for maximum exhaust flow and turbo efficiency, this downpipe removes the restrictive factory catalytic converter—giving your CLA or GLA a sharper throttle response, faster spool, and a far more aggressive exhaust note.