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The 4A-GE is Toyota’s performance 4 cylinder engine jointly developed by Yamaha Motors. It was used in many cars like the Trueno, Levin, MR2 and strangely the Geo Prizm. For most of its life the engine used a 16 valve config until the fourth generation silver top.

Purchase an SR20DET shirt for an additional $5 off.

  • 100% soft ring-spun cotton (heather colors contain 10% polyester), 4.3 oz
  • Shoulder to shoulder taping to maintain shape
  • Limited print run
  • Silk-screen printed graphic & care tag
  • Made & printed in the USA
  • Fits slim

4AGE Shirt

8 reviews

The 4A-GE is Toyota’s performance 4 cylinder engine jointly developed by Yamaha Motors. It was used in many cars like the Trueno, Levin, MR2 and strangely the Geo Prizm. For most of its life the engine used a 16 valve config until the fourth generation silver top.

Purchase an SR20DET shirt for an additional $5 off.

  • 100% soft ring-spun cotton (heather colors contain 10% polyester), 4.3 oz
  • Shoulder to shoulder taping to maintain shape
  • Limited print run
  • Silk-screen printed graphic & care tag
  • Made & printed in the USA
  • Fits slim

  • Sizing

    Measurements based on unwashed garmets, sizes may vary. Garmets will shrink! Please review the chart carefully to ensure an appropriate fit.

    4AGE Shirt 4AGE Shirt
  • Shipping

    Estimated to arrive May 29 - June 4 based on your location (United States).

    Shipped by CanadaPost Parcel. Tracking will be provided for most orders - please view our shipping page for more details.

    Pre-order items require additional manufacturing time and are shipped separately.

  • Reviews

    Leave your own review of this product, submit your order email and order id to receive a discount code for helping others out (valid for tops/hats only)! Unverified reviews will be filtered for spam.


    Past Reviews


    Verified Purchase

    January 11, 2016

    They asked me to review it again and I WILL!
    Since my last review this shirt has transformed me into a master mechanic. Whilst this magical fabric draped upon my chest, I was able to perform unimaginable mechanical feats. Engines rose right out engine bays like balloons from a small childs hands. I sculpted multi cylinder masterpiece engines from single blocks of aluminum.

    Get this shirt.

    For the good of man.


    Verified Purchase

    January 8, 2016

    Great quality and great fit, really nice shirt


    Verified Purchase

    January 6, 2016

    Great quality as usual, my 4th IB tee now. Even got my girl to get one! Also, amazing service!


    Verified Purchase

    January 6, 2016

    Awesomesauce. . Fits great looks even better.
    Superb service.


    Verified Purchase

    January 6, 2016

    Fast shipping, quality product!


    Verified Purchase

    January 6, 2016

    I was in on the original pre-order sale and was notified of the issue with the printing. I was sad that it happened, and opted for a refund. I was SO excited when David announced that he bit the bullet and re-printed them. I instantly grabbed one. It is a great design (my first IB shirt) and I look forward to what he comes up with in the future


    Verified Purchase

    January 6, 2016

    Shirt was amazing! Very comfortable!


    Verified Purchase

    January 6, 2016

    Exceptional quality!! That graphic is amazing. Just what I need for wearing at the track next season!!!

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