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PLM 4-1 Bisi Exhaust Header (Merge Collector) - B-Series Engine

PLM 4-1 Bisi Exhaust Header (Merge Collector) - B-Series Engine


Regular price $325.00
Regular price $450.00 Sale price $325.00
Sale Sold out
Shipping calculated at checkout.
Experience real power gains with PLM Private Label Mfg. Power Driven (V2) B-Series header's true 4-1 merge collector which optimizes exhaust flow. This 2-piece design maximizes peak horsepower performance!


Hand TIG Welded.

  • CNC machined manifold flanges.
  • Two-piece slip fit design.



  • True 2.65 (ID) inch collector outlet.
  • 18 gauge, 304 stainless steel.

Notes: We strongly recommend you use a flex pipe after the header in your exhaust system. We recommend using our 2.75" extension pipe for an easier installation.


  • Recommended for 1.8L - 2.0L engine displacements.

What's Included?

Install Guide


  • One year manufacturer warranty.


We realize that returns and exchanges are a part of the purchasing process and we do our best to make it as easy as possible. If you are not 100% satisfied with your purchase, you can return your order to Liken Motorsports within 30 DAYS from the invoice date.

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PLM 4-1 Bisi Exhaust Header (Merge Collector) - B-Series Engine

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Frequently Asked Questions

Do you ship overseas?

Yes, we ship all over the world. Shipping costs will apply, and will be added at checkout. We run discounts and promotions all year, so stay tuned for exclusive deals.

How long will it take to get my order?

It varies based on your location. Orders processed here will take 1-7 business days to arrive. Overseas deliveries can take anywhere from 7-16 days. Delivery details and updates will be provided in your order confirmation email.

Any question?

You can contact us through our contact page! We will be happy to assist you.