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Ships within 48 hours · Estimated delivery Jul 9 - Jul 14
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Description
Main Caps Tall Boy Billet IE 4140 (VW 4 CYL)The tall boy VW 4 cylinder main caps are carefully crafted, in house, from USA 4140 alloy steel. They provide extreme rigidity to the main bearing and crankshaft, and a flat foundation for a bedplate or crankshaft girdle installation. These main caps are special because they are designed to work with a crankcase bedplate girdle. Typically, the installation of those products requires machining small spacers, which go between the main cap and the
The tall boy VW 4 cylinder main caps are carefully crafted, in-house, from USA 4140 alloy steel. They provide extreme rigidity to the main bearing and crankshaft, and a flat foundation for a bedplate or crankshaft girdle installation.
These main caps are special because they are designed to work with a crankcase bedplate / girdle. Typically, the installation of those products requires machining small spacers, which go between the main cap and the girdle, bringing it up to the same level as the pan rails. What we found is that these spacers are very difficult to machine to the correct height. Even when done with extreme care, this compromises the installation and results in a warped girdle. Our solution to this is these Tall Boy Main Caps. These stand slightly proud of the pan rail as they come out of the box. They are then machined level with the pan rail, resulting in a perfectly flat surface for the installation of your bedplate / girdle, and the most rigid foundation for your crankshaft possible. In addition, the large profile and high strength material is much stronger and stiffer than the factory main caps.
If you are not using a girdle, please purchase our standard VW 4 Cylinder billet main caps.
Requires machine work including align bore & hone for fitment.
Main journal housing bore size: 2.3228"-2.3236".
These main caps are special because they are designed to work with a crankcase bedplate / girdle. Typically, the installation of those products requires machining small spacers, which go between the main cap and the girdle, bringing it up to the same level as the pan rails. What we found is that these spacers are very difficult to machine to the correct height. Even when done with extreme care, this compromises the installation and results in a warped girdle. Our solution to this is these Tall Boy Main Caps. These stand slightly proud of the pan rail as they come out of the box. They are then machined level with the pan rail, resulting in a perfectly flat surface for the installation of your bedplate / girdle, and the most rigid foundation for your crankshaft possible. In addition, the large profile and high strength material is much stronger and stiffer than the factory main caps.
If you are not using a girdle, please purchase our standard VW 4 Cylinder billet main caps.
Requires machine work including align bore & hone for fitment.
Main journal housing bore size: 2.3228"-2.3236".
About Integrated Engineering: Merging decades of experience with hundreds of hours of prototyping, engineering, dyno testing and daily usage evaluation has output exhaust systems that are the ultimate compliment to your performance car. IE products are proudly engineered, designed, and manufactured in-house, in Salt Lake City USA.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 1414 reviews
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Product Reviews
★★★★★ 5
Absolutely would buy again
Color: Orange
I love this, my pup loves this.
Strong, sturdy. Shakes all over the place.
Pup loves to chew on it, I think the vibration comforts her gums from teething.
Perfect size
You must take the outer skin off and pop open the white power button to charge it.
Total fun!
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Reviewed in the United States on March 22, 2026
★★★★★ 4
Rubber blue cover won't come off.
Color: Orange
If you want to keep the blue cover on that your dog chews off every other ball that is similar, get this one. Most dogs will not chew it off. It stretches when the chew on it so it can't be chewed or stretched off the ball. I've got a blind dog and she will kick it around for an hour at a time. It keeps her active and having fun.
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Reviewed in the United States on November 8, 2025
★★★★★ 3
Nice, but...
Color: Orange
It's a good idea & keeps my 1yr old Staffy/Pit occupied, BUT... The rubber around the ball is either too easy to chew through or my pup is just an aggressive chewer. Either way, it's a plus that it does come with an additional rubber, but it would be nice to also be able to buy additional ones vs having to buy the whole toy again & again! Oh, & if you think about letting them play with it without the rubber please be on the lookout for the rubber covering where you would charge it because my pup managed to locate & destroy that cover piece as well haha!
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Reviewed in the United States on August 27, 2025
★★★★★ 5
Good quality
Color: Orange
This interactive dog ball has been a fun and engaging toy for my dog. It entertained much longer than regular toys.
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Reviewed in the United States on April 22, 2026
★★★★★ 5
Entertains my husky!
After some research, I decided on this interactive toy for my young husky. I chose it over others because I liked that it was wrapped in a silicone cover so it wouldn't be as hard on her teeth, or my floors. It also seems to have helped with durability. She's never had this sort of automated toy before to engage with and it surprised her at first, but then she really got into it: pawing and nosing and sometimes howling at it. I was worried it would drive her and/or me crazy, but so far so good. She will play with it for a good 10 minutes at a time and it seems to provide some good mental stimulation since it rolls and spins unpredictably. It is easy to charge and was ready to use right out of the box. It has proved durable in the first week surviving my crazy pup and multiple trips down the stairs. I am also happy to report that it has worked pretty well on the carpet/rug areas of the home. It should work pretty well unless you have a very thick shag carpet. We'll see how long it lasts, but highly recommend so far.
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Reviewed in the United States on July 1, 2025