Speed Force Racing can take your stock automatic transmission that is barely capable of withstanding 400WHP and turn into an incredible transmission that can withstand 750WHP!The secret is the use of 25% more aftermarket clutch packs.

Stage 2 heads feature all of the work of the stage 1 heads except a JWT valve spring and titanium retainer package is used to replace the stock springs and retainers

Stage 3 heads are the best flowing cylinder heads you can buy for your Z or G. They feature 1mm oversize stainless Ferrea valves with the Ferrea race spring and titanium retainer package.

These bolt-on header upgrade for oyur Speed Force Racing Single turbo system for your

Altima are the last component in the exhaust system that must be addressed.We have seen as much as 15 horsepower at the wheels with these bad boys.Ask us about these in 321SS!

These engines are capable of withstanding 1000+WHP.Now you can buy a professionally assembled, balanced and bluprinted, Darton MID sleeved short block with Arias pistons and Pauter rods that is capable of handling in excess of 1000WHP!

In order to run safely past 400-450WHP, an upgraded bottom-end with forged internals is a must.You get your choice of compression ratios ranging from 8.6,9.2,10.5 or 11.5 to 1 depending on whether or not you are going forced induction or keeping it all motor.

In order to run safely past 400-450WHP, an upgraded bottom-end with forged internals is a must.You get your choice of compression ratios ranging from 8.6,9.2,10.5 or 11.5 to 1 depending on whether or not you are going forced induction or keeping it all motor.

This is the SFR aluminum engine cover to use with the SFR High Velocity Intake Manifold.

Speed Force Racing is proud to offer the Haltech Platinum series Plug and Play EMS for the 2003-06 Nissan Altima or Maxima. This is the EMS system that you want to tune your Nissan with.With the ability to accept dual wide-bands and exceptional control of the engine, you cant go wrong. 

This intake manifold eliminates the secondary butterfly system of the stock manifold. By doing this we eliminates the dip in horsepower in the midrange and provide big horsepower gains all the way to redline.Thi si the perfect itnake manifold for direct port nitrous and forced inductions systems.

The cylinders heads are responsible for getting air into your cylinders. To make big power you needs lots of airflow without compromising velocity.Our cylinder heads will outflow the stock heads by as much as 40% while maintaining enough velocity at both high and low rpms to provide substantial torque and power increases.

Speed Force Racing can take your stock VQ35 Maxima and turn it into a tire smoking, turbocharged and intercooled, 315WHP sports sedan. Your car can not only keep up but even beat, many of the sports cars on the road today.

Stage 3 heads are the best flowing cylinder heads you can buy for your Z or G. They feature stainless BC valves with the BC race spring and titanium retainer package.