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This Kooks stamped merge slip-on collector is a 2.00" inlet to 4.00" outlet 4-into-1 design formed from 304 stainless. It slips over 2.00" primaries, uses Kooks’ patented scavenging spike to improve merge flow, and transitions to a 4.00" OD outlet while including two A/B-style tabs for attachment. Sold individually, it’s intended for custom header builds and smooth flow consolidation.
Kooks Universal 2in x 4in Merge Collector w/9-10in Long Body. Plus 2in for Slip-On
