Over the last couple years the priorities in my life have changed. Had Matrix Garage grown big enough to hire enough employees and leave them to running it while I pursued other things I would have happily taken that route but it has generally stayed just big enough to keep me working overtime. 
I have decided to start focusing my carreer and passions elsewhere and that means that supporting the AW, AE, 4A and related communities has had to be moved much lower on the priority list. I have decided to keep the store up to provide parts that only we offer, or other things that are hard to come by elsewhere. You will notice many big name, readily available products have been taken down and we will continue to do so. It's just not worth our time trying to compete with the big corporations selling at cutthroat prices and it just takes up more of my time. 
I will try to keep providing those parts that we make or that we have developed and sell as a service to the community but understand that now this is something I do in my spare time because I don't want to leave people hanging. 
I try to make shipments and process orders at least twice a week. If you want Amazon next day shipping buy from Amazon. I will do my best to keep order time and customer service at a reasonable level but have some understanding. I am not making money on this and it takes away from my other work and other issues that are very important to me right now. 
I have always wanted to make our designs and other information open source and available to the community but to do so properly would take a lot of time making sure that models and drawings were complete, accurate, or properly described. To go through everything and make sure it was something that I felt comfortable releasing to the community. I would love to find someone who was willing to help me do this. Someone in engineering school or passionate about this to help go through 3D scans, CAD designs, and information to prepare it. If you are interested feel free to email me. 




7AFE, 4AFE, 7AGE 6 bolt flywheel



After a long wait the new 6 bolt flywheels are finally here. This is a 6 bolt flywheel that will fit the 4AFE, 7AFE and other 6 bolt A series cranks.

Most lightweight flywheels use the 200mm clutches but we wanted to make a setup that could take more torque and dissipate more heat so we went with the later 212mm 4AGE diameter.

This flywheel weighs 3.6 KG making this one of the lightest flywheels out there. This is slightly offset by the larger diameter clutch which will add a little more weight and moment of inertia than the smaller 200mm clutch. It is also primarily designed for the 7A crank which is heavier and has a greater moment of inertia so we wanted to make this clutch as light as possible to keep the 7A feeling like a light rev happy 4A.

We now offer two styles, one with 6 bolts for most NA builds and light boosted builds and another version with 6 additional holes for higher RPM or higher power builds. These holes are designed for m6 x 1 socket head cap screws (allen wrench) which are countersunk to clear the flywheel bolts. For high power builds these give you more clamping force than the 8 bolt flywheels. This design is much better than the dowels that are sometimes used on 6 bolt flywheels. Dowels are not designed to have force applied to them and don't hold much torque. Clamping force is what keeps a flywheel from moving and these bolts add a lot of clamping force.

These flywheels are rated for and balanced to 10,000 RPM. They can quite likely be spun higher but if you are doing that kind of build you should be spending more than this on your clutch anyway.

At which point you should upgrade to the additional holes is a judgement call depending on a number of variables but if you are using ARP hardware the 6 bolt design should pretty easily hold 250+ HP and likely quite a lot more. If you are going for big power or pushing the revs you may consider the 6+6 version. 

It is recommended to use a manual or CNC mill to make the additional holes for the additional bolts however the kit includes drill bushings that will allow a trained professional to drill and tap the threads by hand. It will also include the additional M6 bolts. 

List price: $0.00
Price: $250.00
Weight: 8 lb
Dimensions: 12 in × 12 in × 1.5 in

courtesy of