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Predator H1 Long Travel Coilover Conversion


“Turn your Hummer H1 or HMMWV into a Long Travel Monster”



Predator Inc. is excited to announce its Long Travel Coilover conversion setup for all model H1 or HMMWV Hummer trucks. With the popularity of Prerunners we wanted to offer a conversion that allows Hummer owners to easily get on the same playing field with a unique Long Travel Coilover conversion setup.

6r2b6389Long Travel setups use A-arms or I-beams to create the type of suspension travel needed to handle desert terrains at high speeds while maintaining dynamic stability. The setup leads to a stance that is undoubtedly recognizable with its wide front-end and massive tire setup.

Predators Long Travel Coilover conversion is fully designed directly from manufacture specs to ensure the best fitment and geometry. The geometry of the conversion is one of the most important factors. With the use of complex r&d, Predator Inc is able to achieve the best possible combination of fitment engineering and suspension geometry.


During the engineering and design phase. Predator Inc gathered all the necessary factory diagrams from AM General which included frame, control arms, knuckle assembly, fender wells and any other parts that may need to be considered during the R&D phase for the long travel conversion.

Sheet metal is then water-jet cut, tubing is bent, and billet parts undergoing CNC machining. Predator Inc.’s quality control process is also a high priority. Each component is inspected upon completion to ensure all dimensions engineered in the custom specs are held to precise accuracy.

All the components and upgraded hardware are used to replace the factory parts. Weak ball joints throughout the suspension system are replaced with Trophy Truck grade Uni-Balls. Upper and Lower control arm are both replaced with our fully tubed and plated units to deliver maximum travel and added strength. The process transforms the complex engineering into fully custom bolt on performance.



Dampening duties are handled by custom-built 10″ King 3.0 coilovers which are fully height adjustable as well as compression adjustable. Eibach springs were used on the coilovers utilizing a combination of a 22-inch 800-pound coil.



Kings bypass valve design and superior tube flow capacity provides accurate flow control over the whole range of adjustment. Shock tubes are honed after plating to assure a tight piston seal and all bypass ports are CNC drilled and hand deburred then polished.


They are used as a primary suspension member to carry the weight of the vehicle and to maintain ride height while providing the adjustable valving and high quality ride characteristics King is famous for.



King bump stops provide an additional level of bottoming control and contain a unique piston design that offers superior flow characteristics. They also use the same quality micro polished shafts and advanced seal technology as their race shocks.


Lightweight hard anodized 6063 aluminum alloy reservoirs with high quality fittings are mated to Aeroquip high pressure hoses which resist abrasion and allow a tighter bend radius without kinking. The aluminum alloy reservoirs dissipate heat quickly and will not rust due to gas charging contamination.

As you can see Predator Inc.’s Long Travel Coilover conversion is developed through tons of hours of engineering and R&D that are put into the design portion of the equation. All components combined offer superior ride quality and handling both on and off road.

We hope this gives you some insight into what it takes to build the front of a Long Travel Coilover Conversion for the Hummer platform.

In part 2 we will show you how we build the rear suspension to complete this conversion on your H1 or HMMWV Hummer.






2006-2010 6.6L GM Duramax




The Allison 1000 has been the standard automatic transmission for the Duramax diesel since its inception in 2001.

Predator’s Stage-4 transmission kit will ensure that your Allison transmission can handle up to 850hp at the crank (approx. 680 rwhp) and up to 1,500 ft lbs of torque without damage. This kit is engineered to handle our Duramax conversions that are equipped with multiple high-performance modifications.

Our Stage-4 package utilize the Heavy Duty version of the Allison LCT-1000. While the Allison LCT-1000 for stock applications has been practically bulletproofed, Predators Stage-4 version has been created to go above and beyond. Numerous Proprietary Components and Modifications have gone into its creation.

Saying a lot of R&D has gone into our conversions would be the understatement of the century. Between the engineering team designing parts that our transmission specialists have developed and the thousands of testing hours on thousands of vehicles around the world, no other transmission has been put through the paces like our conversions have. Our built transmissions are designed and produced for what you want out of it and how you are going to drive.

What sets Predator transmissions apart from the rest can be summed up in two words: innovation and technology.

GM LMM/LBZ  6-Speed Allison LCT-1000 Stage 4 Package.

  • Allison Heavy Duty LCT-1000 6-Speed Transmission w/ Numerous Proprietary Components and Modifications
  • Performance TripleLok Torque converter
  • Billet Flex Plate
  • Ability to hold 1000+ hp!

Clutches – The Predator manufactured clutch design and style in which we build those clutches, are able to add 150% torque capacity increase to the transmission, allowing for more power and heavier loads put on the transmission without compromising reliability.

  • C1 includes: 16 (.067″) HEG 1-sided internal spline friction plates
  • C2 includes: 7 (.069″) Red Eagle friction plates / 7 (.086″) steel separator plates / 1 (.197″) bottom apply plate
  • C3 includes: 7 (.084″) Red Eagle friction plates / 6 (.067″) Kolene steel separator plates /  1 (.125) C3 apply plate with slots / 1 (.426) C3 top presure plate / 1 (.102″) P1 ring gear thrust element spacer / 1 modified apply piston
  • C4 includes: 6 (.084″) Red Eagle friction plates / 4 (.067″) Kolene steel separator plates / 1 (.098″) Kolene steel separator plates / 1 (.250) C4 top presure
  • C5 includes: 8 (.071″/1.80mm, 115 Teeth) HEG friction plates / 8 (.078″/1.98mm) Kolene steel plates

Valvebody – The valve body, while working with the computer, is essentially the brain of the transmission. It is what routes fluid to particular clutch packs based on which gear your truck needs to be in. Long shift duration promotes premature clutch wear in heavy-duty applications. OEM valve and spring configuration do not allow TCM pressure control strategy to adequately raise clutch pressure and shorten shift duration. Needless to say, this is an important part, so naturally it is in need of improvement. This modification alters the trim valves and springs, resulting in a more responsive clutch pressure.

Allison Valve Body Re-calibration Shift Kit; Boost valve, Pump shim, & Gaskets

  • A & B Trim Valves & Springs Allison 1000
  • Firmer and shorter upshifts
  • Firmer TCC engagement
  • Improved engine braking on deceleration
  • Increased clutch torque capacity

Torque Converter – The Predator TripleLok torque converter is engineered with a unique high performance, high-load situations, the torque converter bears the brunt of the engine’s force. Inferior torque converter designs can slip excessively, causing the oil to foam and boil, and the front cover to balloon, even rupture. But Predators TripleLok torque converter was specifically designed to handle the kind of punishment you dish out. Built on our premises in a state-of-the-art transmission facility, our TripleLok torque converters feature triple the clutch material, furnace brazed fins and our own billet aluminum stator design that maximizes low-speed torque. Tested in applications producing up to 1,000 hp and 1500 ft. lbs. of torque, the Predator TripleLok Torque Converter is the ultimate in converter technology.

The heavy-duty billet cover and three locking discs give you unbeatable lock-up performance. 

  • Billet cover with patented square flank drive
  • Triple disc CNC laser cut clutch plates
  • Billet piston
  • Redesigned spring dampener supports increased torque loads
  • Fully welded turbine and impeller vanes
  • CNC stator with high flow windows increase oil flow providing increase efficiency
  • Full roller bearing construction between high load areas
  • CNC cut pump drive hub lock into impeller housing and plasma welded for unsurpassed strength

Recaro Upgrade

Sometimes standard seats don’t cut it and it is time to upgrade! Recaro seats don’t come out of the box ready to install in a HMMWV. That’s when our custom fabrication team takes a few measurements, make a few adjustments and this upgrade is ready to install.

Developing new products, integrating new features, creating solutions based on the customers needs and technology advancements is a passion of Predator Motorsports. Have a problem with your Hummer that you can’t solve or a creature comfort you will like to add? Let Predator Motorsports make it happen for you.

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Adventure Time

Hummer on-top of a hill

Check out our friend Charles and his adventures in his 1985 USMC HMMWV.

Charles put his HMMWV through the wire and definitely has gotten “bang for his buck”. After finding his chariot on Ebay, the allure of owning a true American iconic vehicle was the driving force to purchase her sight unseen. He started their relationship by driving her daily for 10 years! Truly becoming intimate with the inner workings of his HMMWV, he has probably turned every bolt on her at least twice!

Charles, accompanied with friends, answers the call for offroad adventure several times per year. They head to Rausch Creek Offroad Park in Tremont, PA at least 2-3 times a year. In May of 2011, they were exploring a new part of the park that had a bunch of man-made obstacles used for rock crawling event. One in particular caught his eye because a bunch of modified Toyota pickup’s were maneuvering around it. He decided to toss in a little “Good ole American Muscle” and conquered the hill! The Shear drop off on either side, and the lack of visibility of the obstacles in front and to the rear of his HMMWV, It definitely made the adventure more “interesting”. In Fact his 4 tires barely fit!!! Check out a few pictures below from his latest adventure.

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H1 Gear Hub Heat Sinks

Billet Aluminum Geared Hub Heat Sinks

Our Billet Aluminum Geared Hub Heat Sinks set (4) replaces the stock access cover plate of your geared hubs. Machined out of a solid piece of 1 Billet Aluminum, these heat sinks will cool the Geared Hub Oil, extending the life of the oil and bearings inside the Hub. A huge advantage when under heavy loads, towing or high performance applications. Available in your choice of anodized blue or black drain plugs. Custom power coating available upon request.

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Almost There

6.6 Duramax and 6 Speed Allison Transmission paired up perfectly

This conversion is almost done. 6.6 Duramax and 6 Speed Allison Transmission paired up perfectly. Exhaust piping complete. 2WD/4WD/ALL WD selectable transfer-case upgrade ready to rock and roll. Few more things to wire and the body will get dropped down. Soon this vehicle will head to the testing phase. Almost there.

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