Now available to the public is our proprietary CNC port for the M5x/S5x cylinder head. There are gains realized from 0.100" to 0.550" lift which is a direct result of the proper development that went into the port. This will result in a power increase across the whole RPM range and not sacrifice any power for naturally aspirated applications and also greatly benefit forced induction applications. We are proud to say that the most powerful BMWs in the US use our cylinder head.

Recent tests revealed a 130+rwhp/110+rwtq gains when we combined our 'Stage 3' offering and billet camshafts on a PT-76 powered E36 M3.

Included with the cylinder head is the following:

- Custom CNC Porting for maximum flow delivery
- Springs are tested for accuracy and consistency
- Resurfacing
- Brand New Valvetrain, which consists of the following:
- High Performance Springs
- Titanium Retainers
- High Performance Stainless Steel Valves
- Bronze Valve Guides
- New Valve Seals
- New Valve Keepers

Inconel exhaust valves are available as an upgrade for those who are running forced induction applications which see higher EGTs.

The 'Stage 3' option is also available for those who are looking to get every bit of flow from the head. It requires further modification which in turns add a bit to the price but an increase in flow of more than 15%.
Offered here is the best flowing cylinder head currently on the market for the E30 M3's S14 engine. We are very happy with the results that we were able to achieve as things looked promising since the early stages of port development. There are gains of over 40CFM at 0.400" lift which is ideal for a high revving engine such as the S14 that uses high performance camshafts.

Included with the cylinder head is the following:

- Custom Porting for maximum flow delivery
- Flow bench tested to ensure consistency across all four cylinders
- Springs are tested for accuracy and consistency
- Resurfacing
- Brand New Valvetrain, which consists of the following:
- High Performance Springs
- Titanium Retainers
- High Performance Stainless Steel Valves
- Bronze Valve Guides
- New Valve Seals
- New Valve Keepers

Inconel exhaust valves are available as an upgrade for those who are running forced induction applications which see higher EGTs. We've decided offer the custom piston from our '1600HP Piston & Rod Set' to those with standard length connecting rods. We've used the same concept in these pistons which ensures that they are able to handle any power level you desire to reach. This particular piston set was designed with the absolute best in mind and no expense was spared.

A few details from the piston set...

- Large valve pocket area with proper reliefs (allows one to run aggresive camshafts)
- Thicker piston deck (allows extra heat and higher boost levels without consequence)
- Thicker pins (Strength and heat dissipation)
- Custom Rings (Best available)
- Side gas ports We are very happy to also offer our same design/concept from the M5x/S5x piston set for the Non-US engines (S50B30/S50B32). These pistons are capable of holding over 1400hp without second thoughts. They make a great addition to our S50B3x connecting rod set. Coupled with the connecting rods, you are looking at a setup which will be as robust as possible.

A few details from the piston set...

- Large valve pocket area with proper reliefs (allows one to run aggresive camshafts)
- Thicker piston deck (allows extra heat and higher boost levels without consequence)
- Thicker pins (Strength and heat dissipation)
- Custom Rings (Best available)
- Side gas ports Available for sale to the public now, is our custom S14 piston set. We used the same concepts that we do for all of our designs, with the best in mind and no expense spared. These pistons are capable of withstanding 1000hp in boosted applications or any naturally aspirated application. This is the same exact piston we run in our 325+HP S14 shop car.

A few details from the piston set...

- Thicker deck to withstand the extra head and cylinder pressure associated with race engines and turbo applications.
- Large accumulated volume groove to assist in reducing blow by.
- Large valve pocket relief area which allows the use of very aggressive camshafts
- Gas Port
- Custom Total Seal piston rings
- Custom heavy duty piston wrist pin (9310 Steel, 1 micron surface finish, 100% Rockwell tested)
- +/- 1 gram weight tolerance This is the answer to all of those who are looking for a properly engineered/designed solution for their high horsepower demand. We made sure to concentrate on the areas that we felt were overlooked by the other sets of pistons being sold on the market. We contacted Ross Pistons to make us the pistons and Oliver to make us the rods. We have had an extensive relationship with both manufacturers as they have always provided us with great quality products that met our most extreme demands.

The benefits of these connecting rods and pistons are many...
* A longer than factory connecting rod is used to reduce piston acceleration which also promotes longer piston pin life and less connecting rod bearing wear.
* The valve pocket area of the piston is made stronger by using more material, which in turn also makes the piston capable of operating with the larger camshafts required to make power at these levels.
* The piston deck is thicker to withstand the extra heat and cylinder pressure at the boost levels required to make 1000+ horsepower.
* A larger accumulated volume groove is used in the piston to help in reducing blow by.
* While upgrading the rod and piston to make it so much stronger, we were still able to maintain the same weight as the factory piston and connecting rods, 955 grams. This kit was designed for those who are looking to raise their engine's ability to rev safely. Included with the kit is everything necessary to convert one's vavletrain to a solid lifter setup and not look back. All components included are of very highly quality, lighter than factory components, and have been engineered/designed for the most extreme conditions.

We've tested the valvetrain kit on our personal E36 M3 shop car to over 9k RPMs in drag racing conditions.

Included with the kit is the following:

- Stainless steel intake and exhaust valves
- Titanium retainers
- Dual valve springs
- Valve keepers
- Buckets with specific shims This kit was designed for those who are looking to raise their engine's ability to rev safely. Included with the kit is everything necessary to convert one's vavletrain to a solid lifter setup and not look back. All components included are of very highly quality, lighter than factory components, and have been engineered/designed for the most extreme conditions.

We've tested the valvetrain kit on our personal E30 M3 shop car to over 9k RPMs without any issues whatsoever.

Included with the kit is the following:

- Stainless steel intake and exhaust valves
- Titanium retainers
- Dual valve springs
- Valve keepers
- Buckets with specific shims We now have the ability to make camshafts to our exact specifications so they can meet our exact needs. No longer are we required to accept what is close enough for our application. Our cast iron billet M5xs/S5x camshafts are made to your exact specifications and require your input so we can design a proper camshaft for your applicaton.

These are the same camshafts that we run in our E36 M3 shop car. We now have the ability to make camshafts to our exact specifications so we no longer are required to accept what is close enough for our application. These are not your typical cast iron camshafts (i.e., Schrick) but rather a billet steel blank which is profiled to your specifications.

We use these exact cams on your E30 M3 S14 shop car which produces 325+hp

We are the only ones to offer billet main bearing caps for the M5x/S5x engine. They are made from billet chromoly steel and then anodized black to ensure a rust free finish. These caps will improve performance and reliability by essentially eliminating cap walk and reducing main bore distortion. They will also strengthen the block and improve bearing life. We feel that they are great addition/upgrade when one decides to reach the 700 horsepower level to further assist our weak blocks. These are a bolt on application that will simply require a line bore after installation to ensure proper clearances. We have tested these main bearing caps on multiple customer engines and they have passed with flying colors. Combined with our custom S14 piston, this connecting rod set is the way to go. With a design capable of holding more than 300rwhp per cylinder, we consider these to be the most robust connecting rods available for the S14 engine on the market today.

These rods are the exact same ones we use in all our S14 engine builds, including our personal E30 M3 which makes 325+hp naturally aspirated.

Specifications:
- H-Beam
- ARP 2000 Bolts
- Meets ISO 901 : 2000 requirements
- Forged Billet German Steel
- 370 horsepower capability per cylinder
- Balanced
- Made In Germany This is a great option for those are aren't looking to break the bank when they pick up a set of connecting rods for their M5x/S5x engine. These connecting rods are designed in house and have been tested to over 150rwhp per cylinder (900rwhp).

A few details about the connecting rods:

- Produced by Carillo's Sister Company, K1 Technologies
- Billet 4340 Steel (Chromoly)
- H Beam Design
- Designed and Finished Honed in the USA
- +/- .0001" tolerances
- Shot Peened for Longer Fatigue Life
- Bronze Wrist Pin Bushings
- ARP 2000 Fastners
- Weigh 504 grams (34 gram weight savings compared to stock)

Fits all M5x/S5x engine with 135mm connecting rods.