WEAPON-X.800 (Stage 4) Installed with Warranty [CTS V gen 3, LT4]

Vendor: WEAPON-X Motorsports


$9,474.00 $10,469.00
If you're looking at this package, you're after as much bolt on HP as possible without cracking the motor.  We've done extensive testing on the LT4 wet sump platform to...
Ceramic Coating
Limited Warranty

If you're looking at this package, you're after as much bolt on HP as possible without cracking the motor.  We've done extensive testing on the LT4 wet sump platform to ensure this is the best and safest combo on pump gas!  The X800 package focuses on air into the engine, overdriving the supercharger, and air out.  This stage 4 package requires a tune, will get you approximately an extra 150 HP!  If you need help with a tune, we offer remote tuning services as well.


  1. WEAPON-X SuperFlow-2 Carbon Intake
  2. WEAPON-X LT 87mm Ported Throttle Body
  3. IW Balancer and WEAPON-X Stage 4 Pulley
  4. 2" Headers - American Racing, Kooks, or Stainless Works
  5. WEAPON-X Triple X Heat Exchangers
  6. WEAPON-X 160* Thermostat
  7. Brisk Spark Plugs
  8. Magnecor 85kv Spark Plug Wires
  9. WEAPON-X Custom Valve Covers
  10. Elite E2X Catch Can
  11. WEAPON-X "X800" Badges
  12. WEAPON-X "X800" Floor Mats
  13. Amsoil Signature Series Synthetic 5w-30 Oil Kit
  14. Amsoil Ea Oil Filter
  15. Amsoil Coolant Kit


  • WEAPON-X SuperFlow-2 Carbon Intake:  Our wildly popular stage 2 intake picks up nearly 35 HP and the carbon fiber air bridge also dresses up the engine bay.  Includes powder coated heat shield kit and custom Green USA air filter.

  • WEAPON-X LT 87mm Ported Throttle Body:  These new ported throttle bodies have picked up as much as 15 HP in our initial testing on the LT1 C7 Corvette back in 2014.  These are all done in house by the our porter and the inlet is smoothed to promote proper transition and reduce the restriction seen by the stepped lip.  You will notice an immediately improved throttle response and we guarantee your satisfaction!  Drive it for a week, if you don't like it, simply return it.

  • IW Balancer and WEAPON-X Stage 4 Pulley:  This is the completely Interchangeable Crank Pulley Kit for the GM LT4 engine with pulley. The lower balancer is much lighter than the stock unit allowing for less rotational mass robbing your positive displacement blower of less HP per revolution. If you already have our kit installed on your car, you can buy rings separately for a quick and easy change to the boost level.

  • 2" Headers and off road X pipe:  Your choice between American Racing, Kooks, and Stainless Works.  All quality made in American systems!

  • WEAPON-X Triple X Heat Exchangers:  Three carefully designed and thoroughly tested heat exchangers to cool the boosted LT4 engine.  Even stock boost CTS Vs can benefit grealty with 150% MORE fluid than the OEM system.  Calculated fin density, core thickness, internal tubing diameter, and core dimensions all go into making this system the hands down BEST on the market.  

  • WEAPON-X 160* Thermostat:  Allow your engine to run cooler so you can push more timing when it's needed.  This is a direct fit replacement.

  • Brisk Silver Spark Plugs:  Brisk Silver Racing Spark Plugs are the best solution for high performance and racing engines. Silver Spark Plugs provide many unique and beneficial characteristics, Silver is taking sparkplug technology to a whole new level, here are many reasons why our Brisk Silver Racing SparkPlugs are beneficial for your engines performance. 

  • Magnecor 85kV Spark Plug Wires:  Hi-Performance LT spark plug wires built to our standards, which mean they are built specifically for gen 5 LT engines and have the necessary heat protection for your long tube header installation. Our LT performance spark plug wire sets begin with a heat shielded Magnacor wire. Magnecor's exclusive 2.5mm high capacity Metallic Inductance EMI Suppressed conductor consists of a stainless steel wire precisely wound at 200 turns per inch over a ferromagnetic core. 

  • WEAPON-X Custom Valve Covers:  Powder coated any color including color matched to brake calipers which is popular.  Our billet valve covers are machined in-house and were designed from the OEM GM LT valve cover CAD file, and even reuse the OEM valve cover gaskets.  These include coil brackets to mount them above the valve covers or you can opt to relocate the coils to completely expose the valve covers.  These with the focus on improving the looks and the performance of your PCV system.  We have added ports in the baffling and enlarged the outlet ports for improved airflow.  This reduces the restriction seen by the crank case pressure which can lead to leaking front cam and rear main seals commonly found on higher HP LS and LT engines.  We have been private labeling these for the top LS and LT performance shops across the country and have gotten nothing but rave reviews!

  • Elite E2X Catch Can:  Catch cans are imperative on parasitic engines that ingest the PCV oily air back through the motor.  The direct injection removes the fuel that ran through the cylinder head ports, which cleaned the back of the valves on previous LS engines; however, even they needed catch cans to filter that oily air and prevent oil from pooling inside the supercharger and caking and drying inside of the intercooler bricks.  

  • WEAPON-X "X800" Badges:  Our classy badges are subtle and designed to compliment the car, while sporting your newfound power.  

  • WEAPON-X "X800" Floor Mats:  Standard stitching color is silver with a red X; however, you can customize the colors upon ordering as well.  We know what you're thinking, your CTS V has nice mats from the factory, but trust us, we have these private labeled by the best in the industry!  The ultra plush material is three times heavier than standard automotive carpeting.  The multi layer backing and urethane core provides extra cushioning helps insulates against heat and road noise and come standard with factory compatible anchoring devices.

  • Amsoil Signature Series Synthetic Oil 5w-30 Oil Kit (10qts):  Develops a strong fluid film that keeps metal surfaces separated while its robust anti-wear additives further reduce wear in metal-to-metal contact regions for maximum engine life. The Sequence IVA Engine Test, which must be passed to meet the industry-standard API SN specification, simulates extended periods of stop-and-go driving. For 100 hours, the test engine cycles between 50 minutes of idling and 10 minutes of elevated rpm – conditions that encourage engine wear. The camshaft is then measured for wear in 84 locations and an average score is determined. We used Signature Series 0W-20, the lightest viscosity in the line, to further increase the severity of the test. AMSOIL Signature Series Synthetic Motor Oil provided 75 percent more engine protection against horsepower loss and wear than required by the industry standard, extending the life of vital components like pistons and cams.

  • Amsoil Ea Oil Filter:  Features advanced full-synthetic media that traps and holds a greater amount of small, wear-causing contaminants compared to conventional filters. They provide extended service intervals for increased convenience, while helping reduce engine wear.

  • Amsoil Coolant Kit (2 gal):  Independent tests reveal AMSOIL Antifreeze/Coolants greatly surpass standards for metallic corrosion and erosion, achieving nearly perfect scores in ASTM corrosion and erosion testing on cast aluminum cylinder heads, steel, copper, solder, brass and cast iron and aluminum water pumps.

X800 Package with WEAPON-X Professional Installation:


  1. WEAPON-X Standard Limited Warranty
  2. WEAPON-X Supplemental Warranty 1 year/10,000 miles
  3. WEAPON-X Supplemental Warranty 3 year/30,000 miles


(Per Heat Exchanger) The manufacturer is in the process of moving to a bigger facility which has caused delays in manufacturing. They are working their best to resume production to get open orders out as quickly as possible.

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