The Firepunk F4 Transmission for your 03-04 Dodge 5.9L Cummins is afull billet build. This is a 1000HP capable transmission that will feedyour desire to build a monster and have a transmission that puts thepower to ground. The valve body is more aggressive then...

The Firepunk F5 Transmission for your 03-04 Dodge 5.9L Cummins isfor the ultimate street truck making big power. Suited for a variety ofHigh Horsepower trucks, this transmission is built using oversizedshafts capable of holding extreme HP and torque. This is thetransmission that was used...

Have your original or aftermarket injectors left you stranded? Are you looking for an increase in power? Well, look no further than our 100HP fuel injectors!   These are an upgrade for close to stock trucks that have minimal supporting mods.  The nozzles are...

Have your original or aftermarket injectors left you stranded? Are you looking for an increase in power? Well, look no further than our 50HP fuel injectors!   These are an upgrade for close to stock trucks that have minimal supporting mods.  The nozzles are...

So, you've made some power but now you want more? Do you still want good drivability while running more competitive events? Well, look no further than our 150% over fuel injectors!    The nozzles are enlarged using inhouse micro EDM (Electrical Discharge Machining) and...

So, you've made some power but now you want more? Do you still want good drivability while running more competitive events? Well, look no further than our 200% over fuel injectors!    The nozzles are enlarged using inhouse micro EDM (Electrical Discharge Machining) and...

So, you've made some power but now you want more? Do you still want good drivability while running more competitive events? Well, look no further than our 250% over fuel injectors!    The nozzles are enlarged using inhouse micro EDM (Electrical Discharge Machining) and...

Have your original or aftermarket injectors left you stranded? Are you looking for an increase in power without sacrificing drivability or reliability? Well, look no further than our 30% over fuel injectors!   At 30% over stock, these are an excellent upgrade for close...

Have your original or aftermarket injectors left you stranded? Are you looking for an increase in power without sacrificing drivability or reliability? Well, look no further than our 45% over fuel injectors!   The nozzles are enlarged using abrasive flow honing technology and are...

Are you looking for an increase in power without sacrificing drivability or reliability? Well, look no further than our 60% over fuel injectors!   The nozzles are enlarged using abrasive flow honing technology and are hydraulically flow matched to less than 1%. Each nozzle...

So, you're ready to push the limit of your build and want to find an injector you can trust to take you to the podium? With our background in OE development, manufacturing and pioneers of the performance common rail fuel systems, you can trust...

So, you're ready to push the limit of your build and want to find an injector you can trust to take you to the podium? With our background in OE development, manufacturing and pioneers of the performance common rail fuel systems, you can trust...

Have your original or aftermarket injectors left you stranded? Are you looking for an increase in power without sacrificing drivability or reliability? Well, look no further than our 30% over fuel injectors!   At 30% over stock, these are an excellent upgrade for close...

Core Return: Exergy requires that all cores be returned within 30 days from original purchase of product. If you fail to return the core(s) within 30 days, you will be charged in full for the core(s) ($150 per injector). Cores that have missing and/or...

Are you looking for an increase in power without sacrificing drivability or reliability? Well, look no further than our 60% over fuel injectors!   The nozzles are enlarged using abrasive flow honing technology and are hydraulically flow matched to less than 1%. Each nozzle...

Have your original or aftermarket injectors left you stranded? Are you cautious to use your truck for what its intended for? Want to feel confident in making that long trip across country or hauling that heavy load for work? Well, look no further than...

The Fleece Performance TapShifter allows you to shift your 2001-2005 GM Allison Transmission with the touch of a button just like the 2006 and newer trucks. Perfect for towing, drag racing, daily driving and everything in-between, the TapShifter installs in no time and provides...

Upgrade your fuel system with this fuel distribution block from Fleece Performance Engineering. If you have an aftermarket fuel filtration system such as an Air Dog or a FASS and dual CP3 pumps, this fuel block will allow you to get rid of your...

5.9 CR Stage 1 Cummins Performance Head   Our 5.9 CR Stage 1 Cummins Performance Head is a step up in performance without the extra expense and work involved with an aftermarket intake. This head includes everything in our HP Reman Head along with...

Have your feed tubes been in service for some time?  Might there be a chance that the extended hot cranking you've been experiencing is due to leakage at the feed tube/injector interface? Then we highly recommend that the feed tubes be replaced whenever the...