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E53 X5 4.4i Supersprint Front Connecting Pipes (For OEM Cat)All Supersprint alternate connecting pipes are mandrel bent for maximum performance. The alternate pipe is designed to replace a resonator that is standard in that same position. This option will increase sound slightly and reduce overall system cost. The polished pipes are manufactured from 100% 304 stainless steel.
Note: Must be installed as kit with headers 022 787 101.
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