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DOC Race Top Mount T3 Manifold - S13/S14 SR20DET

4 Star Rating


DOC Race manifolds are built by highly trained and skilled fabricators who bring years of experience to the table. These high-performance manifolds have been known to produce over 900whp. Sold worldwide, many DOC Race manifolds are used by pro racers across the country competing in NHRA and BOTI SFWD classes. We only use high-quality 304 stainless steel tubing with thick walls so you never have to worry about cracking or warping, even under extreme horsepower applications. Buy this SR20DET top mount manifold with confidence.

Product Features

We custom make our own collectors, and over the years, they’ve evolved to provide the lowest possible angle. This produces minimal exhaust turbulence, which means faster spool and higher horsepower capabilities. All manifolds go through a major port and polish job to guarantee the absolute highest flow possible. The porting process has been dyno proven over and over again to reduce lag and aid in peak power.

  • T3 flange
  • Fits up to GT35R
  • Retains AC

This SR20DET top mount manifold is the same manifold used on our Formula D sponsored S13 driven by Walker Wilkerson with a GT3076 making 470hp 436ft/lbs. It’s available with a 38mm, MVR, or MVS wastegate flange. Please choose from the drop down box when ordering.

Place Your Order Today

If you want serious performance gains and lasting dependability, this SR20DET top mount manifold is an outstanding choice. We firmly believe that each and every part matters when it comes to maximizing the performance of your car, and we refuse to sell products we wouldn’t use in our own builds. If you have any questions about compatibility, installation, or anything else at all, just call our experts at 1-888-SR20DET for immediate answers. Place your order today, and see why the pros choose Enjuku Racing.


  1. Interference Issues

    Posted by John on

    The manifold it's self is a piece of art. Beautiful welds, high-quality material and it bolts right up. The problem is there are a lot of interference issues with the rest of the car. I'm on version 2 down-pipe and it still makes contact with the steering shaft. The turbo and manifold are also right on top of the crank-case venting tubes - necessitating going to a steal wrapped units. No matter how much heat protection you add to the brake booster you'll still get massive heat soak causing the brakes to go soggy. A Pathfinder master and re-routing the lines will be a must.

    In sort - solid piece, it's built to last a life time, but in no-way shape or form is it a "Drop in affair". I suppose this is true for any big-turbo top mount, but buyers just need to be aware of that.

  2. Docrace T3 manifold

    Posted by Rod on

    Fit perfect, bolt right up and awesome tig weld keep up the good work. Project s13 sil80 .T3 docrace manifold w/ T3/t4 turbonetics 60 trim turbo .hope they make Vband Downpipes for this setup

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