Click for Coverage
  • JP Magazine
  • Dirt Sports + Off-Road
  • 4-Wheel & Off-Road
  • Four Wheeler
Subscribe to the Free

Hardcore Fullsize Parts Buyer’s Guide

Posted in How To on September 1, 2012
Share this

While it is true that the staff at Four Wheeler enjoys wheeling our Jeeps, we are also huge fans of fullsize trucks. Fullsize trucks offer bigger size, increased power, and heavier-duty components that smaller 4x4s just can’t match. Fullsize trucks also provide a more challenging experience that can transform a common Jeep trail into a day of excitement. For those of you that love fullsize wheeling as much as we do here is a collection of fullsize-specific gear ranging from kits to builder parts, to help increase your fullsize trail rig’s capability.

What: Ujoint Offroad Do-It-Yourself Solid Axle Conversion For Ford Vans
About: Ujoint Offroad manufactures the industry’s only DIY 4x4 Conversion kit for the ’92 to current Ford E-Series vans. From a stock E-150 work van to a fully loaded E-450 Class C motorhome, Ujoint has the kit you need. What started as a small production run in 2007 has grown into a full product line with over 150 kits sold across the US and Canada. The UJOR conversion kit adapts the ’99-’04 F-Series solid front axle to the van chassis with custom leaf springs, ensuring a good ride while maintaining load capacity. UJOR also offers complete axle builds, so you can buy as little or as much as you need to complete the swap. Lift kits start at four inches for 33-inch tires, and go up from there in 2-inch increments.
Info: Ujoint Offroad, 828/490-1562,

Traction Adder
What: Eaton 14-Bolt Truetrac
About: Work trucks, farm trucks, tow vehicles and even drag trucks can finally get their power to the ground with the popular Eaton Detroit Truetrac performance differential. This new 30-spline Detroit Truetrac will fit 10.5-inch GM 14-bolt axles. Sporting a steel case and a design that has been proven in racecars, medium-duty trucks and even military vehicles, the Truetrac is the perfect traction solution for trucks that spend time on street and the trail. The helical-gear design provides quiet and smooth operation while automatically transferring torque to the wheel with the most traction. Eaton’s Detroit Truetrac has no clutches or cones to wear out and never needs maintenance.
Info: Eaton, 800/328-3850,

Bumper Beef
What: Warn Heavy Duty Bumpers
About: Warn Heavy Duty Bumpers aren’t only tough, but they are contoured to the shape of a vehicle’s grille and body for that integrated look. They feature a one-piece welded design and are made from heavy ¼- and 3⁄16-inch-thick steel with a mounting plate for Warn Heavyweight Series winches, including the massive 16.5ti. These bumpers are available with or without brushguard tubes and additionally feature welded eyelets for D-shackles, clearance for oversized tires, and integrated light ports with a set of included Warn W350F Fog Lights. Extra light mounts are located on the bumper’s top surface. These bumpers wear a black powdercoated finish with a durable undercoat for corrosion resistance. Applications include Chevrolet, Ford, and Ram fullsize trucks.
Info: Warn Industries, 800/543-9276,

Hub Logic
What: SpynTec Hub Conversion Kit
About: Continuing with its heavy-duty lineup of hub conversion kits, SpynTec Industries is releasing a short version for the ’00-’09 Ram 2500 and 3500 pickups as well as releasing both single-rear-wheel and dual-rear-wheel kits for the ’10 and ’11 models. These new kits feature the same all-steel, one-piece hub construction and use an ABS tone ring that is integral with the hub. Kits are shipped complete with the races, needle bearings, and studs pressed in to facilitate easy installation.
Info: SpynTec Industries, LLC, 888/290-2953,

Hi-Po Axle
What: Dynatrac ProROCK80
About: Dynatrac’s ProROCK80 axle delivers unmatched strength, increased ground clearance, and unequaled component quality for ultra high-performance 4x4 vehicles. Made in the USA to the same exacting standards as every Dynatrac product, the new Dynatrac ProROCK80 includes the patented and Dynatrac-exclusive high-ground-clearance design. It is constructed with huge 4-inch-diameter, lightweight axle tubing and utilizes standard Dana 80 11.25-inch ring and pinion gears, 40-spline full-floating axle shafts, and a 37-spline pinion shaft. This axlehousing is ideal for running 40-inch and larger tires on fullsize rigs, eliminating common housing and gear-life problems under severe use. The ProROCK80 axle also supports industry-leading 40-spline differentials including the ARB Air Locker and Eaton’s Detroit Locker and E-Locker.
Info: Dynatrac, 714/596-4461,

Rusty Pieces
What: Rusty’s Off-Road Builder Parts
About: Hardcore truck enthusiasts know that real trucks are built, not bought, and many shy away from using off-the-shelf components in favor of custom fabrication. Rusty’s Off-Road offers an enormous selection of custom tabs, brackets, gussets, control arms, track bars, and more that can make fabricating a one-off suspension, rollcage, or other custom project a whole lot easier. Whether it’s a solid-axle swap or a custom long-travel suspension, Rusty’s Builder Parts can be used or adapted to just about anything. In addition to complete brackets, Rusty’s offers over 40 different tabs in a variety of shapes and styles. Rusty’s can also build track bars and control arms to your specifications and with a wide variety of ends, including rod ends, forged Flex Joints, OE rubber, and more. Rusty’s can also build custom steering components, including tie rods and drag links. All of Rusty’s products are Made in the USA and Trail Tested.
Info: Rusty’s Off-Road, 256/442-0607,

Hardcore Shafts
What: RCV Ultimate IFS CV Axleshafts
About: RCV’s Ultimate IFS CV Axleshafts for fullsize pickups and SUV’s provide ultra-high-strength and articulation angles of up to 45 degrees that original-equipment CV axles can’t match. These CV axles are a direct replacement for half-, ¾-, and 1-ton vehicles and provide the axleshaft strength of a straight axle swap, while maintaining the traction, smoothness and control of IFS. High-strength billet-alloy construction, wrapped with RCV’s patented orange spherical sealing technology provides a bulletproof combination. The CV Axles are low maintenance, and backed with a “No Questions Asked” limited lifetime warranty against breakage. RCV can also provide custom lengths and configurations.
Info: RCV Performance Products, 815/877-7473,

Steering Straight
What: Offroad Design Crossover Steering
About: With years of experience making fullsize trucks go where nobody thought they could, the guys at Offroad Design have the necessary equipment figured out. While gearing, suspension, body armor, axles, and other trail mods are all important, the most essential upgrade to get absolutely right is the steering system. Lifted fullsize GM trucks are notorious for steering problems and Offroad Design has them all sorted out with an arsenal of beefy parts. Frame bracing, steering boxes, high-strength steering arms and linkages, HD knuckles, hydraulic assist kits and full hydraulic systems all work to make your truck go where you want when the trails get tight. The most popular upgrade for any straight axle GM is a basic crossover steering system. The truck pictured here is a ’99 GMC with a solid axle swap, crossover steering, HD tie rod and hydraulic assist. Applications are available for any fullsize GM from ’68 to current production.
Info: Offroad Design, 970/945-7777,

Flipped Up
What: Sky Chevy/GMC Rear Shackle Flip
About: Sky’s Off Road Design’s brand new ’88-’98 Chevy/GMC Rear Shackle Flip boasts a smoother ride and adds 4.5-inches of extra lift to your vehicle. The kit fits any truck with 62-inch rear springs, including fullsize SUVs such as the Blazer, Tahoe, and Suburban if new holes are drilled to mount the brackets. Unlike conventional kits, the company has added two additional mounting holes on the bottom of the frame to prevent bending and fatigue. The kit includes two brackets to position shackles in the downward position, ½-inch mounting bolts, SAE flat washers, and Nylock nuts. Made out of ¼-inch steel, the parts are MIG-welded and CNC laser cut and formed. This product is proudly made in the USA out of American steel.
Info: Sky Manufacturing, 541/736-3743,

Solid Swap
What: ORU Solid Axle Conversion Kit
About: Off Road Unlimited’s bolt-on conversion kit will allow you to convert your ’01-’10 GM independent front suspension to a leaf-sprung, straight-axle setup. With the stronger axle in place, you can run a large lift and tires and the added articulation will have you ready for anything the trail has to dish out. This kit contains the necessary brackets to install the axle and springs only. Additional required components are also available from ORU.
Info: Off Road Unlimited, 818/563-1208,

Robust Rods
What: Fabtech ‘01-‘12 GM Heavy-Duty Tie Rods
About: Fabtech’s extra-large-diameter tie rod assemblies for ’01+ GM 2500HDs resist bending and breakage when running large tires. Fabtech tie rods use forged-steel construction and are superior in strength to the small factory tie rods that are prone to bending with just light to moderate off-road use. The Fabtech tie rod assemblies are direct factory replacements and don’t require any modification to the center link or steering knuckles for a fast and easy installation.
Info: Fabtech Performance Suspensions, 877/432-2832,

Spring Time
What: Deaver Long-Travel Leaf Springs
About: Any ’74-’91 fullsize Chevy or GMC 4x4 truck can benefit from Deaver’s front long-travel springs, which are available in 4- to 8-inch lift heights. Moving the shackle mount back four to five inches to right under the body mount and boxing it in with a slightly longer shackle will yield approximately 14 inches of total wheel travel. Like all Deaver springs, these are made in the USA with a high leaf count of thin material, military wraps, and Teflon pads on the ends of the leaves.
Info: Deaver Spring, 714/542-370,

Rat Replacement
What: Chevrolet Performance HT502 Crate Engine
About: If you are thinking about re-powering your trusty big-block-powered truck, don’t bother with a rebuild or reconditioned used engine. Chevrolet Performance’s HT502 crate engine is an affordable alternative with more power and greater durability. The HT502 is rated at 377hp and a whopping 512 lb-ft of rock-stomping torque. That is more than the factory ever offered and more than you’ll get with a stock-type rebuild. This engine is uniquely suited to pre-’78 trucks, but can be adapted to a variety of applications. The HT502 is built with a forged crankshaft, rods and pistons for maximum strength; and they are installed in a new version of the big-block engine block. A conservative 8.75:1 compression ratio ensures pump-gas performance at all altitudes and loads. The HT502 assembly comes with heads and a balancer installed and all necessary components to finish the engine are available from Chevrolet Performance.
Info: Chevrolet Performance,

Rockwell Boots
What: Chucks Trucks Neoprene Boots
About: Chucks Trucks offers solid neoprene boots keep the mud and goop out of 2½-ton Rockwell axles. The two newest colors are orange and green, but Chucks Trucks also carries boots in black, red, yellow, dark blue, and light blue.
Info: Chucks Trucks,

Axle Bits
What: West Coast Differentials Axle Parts
About: West Coast Differentials has a huge inventory of axle and differential parts for your fullsize. Whether you need to repair, replace, or upgrade a fullsize axle assembly, West Coast has the parts you need to get the job done right. Available products include ring-and-pinion gear sets, differential rebuild and installation kits, lockers, spools and positraction units, bearings, seals, hubs, diff covers, axleshafts, and more. The experts at West Coast Differentials have the technical expertise to help you choose the perfect setup for your needs and budget, and can usually get parts shipped out the same day you place your order.
Info: West Coast Differential, 800/642-0950,

Hard Pull
What: ComeUp Seal Series Winches
About: The ComeUp Seal Series winches are high-performance, self-recovery winches that were developed with submersible capability in mind. Seal Series winches have a fully sealed transmission system, fully sealed motor with built-in thermal detector, submersible sealed contactor, waterproof remote control, built-in waterproof receiver module for a wireless remote control, and external automatic full-load Cone Brake Structure (CBS). One important feature of the Seal Series is the exclusive “CBS-Brake outside the Drum” brake system that allows the heat from the brake to dissipate easily.
Info: ComeUp,

Linked Up
What: FabWorx ’00-’07 GM HD Four-Link Solid Axle Conversion Kit
About: FabWorx Offroad’s four-link solid axle conversion kit will allow you to mount a front ’78-’79 Ford Dana 60 on ’00-’07 GM Heavy-Duty trucks. These conversion kits are designed to bolt on to your vehicle’s frame using some factory holes. However, some welding and cutting may be required to install this kit and the vehicle ride height will increase by 10 inches. Fabworx kits are made right here in the USA.
Info: FabWorx Offroad, 707/578-9679,

Builder Brackets
What: EVO MFG Builder Brackets
About: EVO MFG offers a full line of custom application suspension and control arm mounting brackets. EVO MFG universal builder brackets are made from 3⁄16-inch laser-cut steel. Used on Jeepsters to GMCs, these brackets are the quickest, simplest, and strongest way to link any vehicle.
Info: EVO MFG, 714/879-8913,

Rock Spider
What: Purple Cranium Spider Differential Rock Guards
About: Spider Differential Rock Guards are available in 48 different models and 65 different powdercoat colors. Designed to protect weak stock differential covers, Spider Differential Rock Guards are completely bolt-on. Stainless steel mounting bolts are also included.
Info: Purple Cranium Products, 517/545-0032,

Flexible Ford
What: Jeff’s Bronco Graveyard 6-inch Standard Flex Suspension Kit
About: If you are looking to upgrade the suspension on your ’78-’79 Ford F-150, check out the 6-inch Standard Flex Suspension lift kit from Jeff’s Bronco Graveyard. Included with this suspension system are SuperFlex rear 12-leaf Deaver springs and front SuperFlex soft-ride linear-rate coils, a 7-degree C-bushing kit, dropped pitman arm, radius arm drop brackets, a track bar drop bracket, an adjustable track bar, polyurethane shackle bushings, 9⁄16-inch U-bolts, D.O.T.-compliant braided stainless steel brake lines, and four Doetsch Tech PreRunner 8000 shocks. Not only does this suspension upgrade give your Ford the flex, but it also fits up to a 36-inch tire on a standard offset wheel.
Info: Jeff’s Bronco Graveyard, 248/437-5060,

Get Covered
What: G2 AAM 11.5-inch Aluminum Differential Cover
About: G2’s latest heavy-duty aluminum differential cover is designed specifically for the popular AAM 11.5-inch axle and is loaded with premium features. The G2 11.5-inch cover comes equipped with magnetic dipstick and drain plug to isolate foreign debris away from the moving parts and bearing cap support bolts for added strength. These covers also have increased fluid capacity for improved cooling and a super-strong ribbed design for enhanced rigidity. G2 covers are available with a raw aluminum finish or a durable black powdercoat and are made in the USA from high-strength, heat-treated aluminum to withstand direct hits.
Info: G2 Axle & Gear, 877/852-7720,

Air Power
What: ARB 2½-ton Rockwell Air Locker
About: After three years of development, ARB offers the baddest ARB Air Locker ever made. The RD145 Air Locker was designed for the storied 2½-ton Rockwell military axle, one of the strongest off-road axles available. Because most vehicles with 2½-ton Rockwells run a 44-inch or taller tire, turning has always been a major challenge, especially when an automatic locker was the only option. With the new RD145 ARB Air Locker, drivers now have the option to select either a locked or open diff to suit their needs and terrain all at the flick of a switch.
Info: ARB, 800/761-8159,

Self Help
What: Badland Winches
About: Badland Winches have it all, including a three-stage planetary gear system for blazing-fast line speed, high-strength aircraft-grade cables, and an efficient, maximum-pull, low-amp-draw Neutron motor. Other standard features are a universal mounting bolt-pattern, a pistol grip controller, an automatic load-holding brake, and a new easy-turn clutch knob. Inside you’ll find a high-alloy-steel geartrain and the exterior’s salt-spray-resistant coating has been tested to withstand the toughest weather conditions. These are professional-grade winches at low Harbor Freight prices.
Info: Harbor Freight,

Suspension Refresh
What: Zone Offroad ’73-’87 GM Suspension Lift
About: Have worn out springs on your ’73-’87 GM truck or SUV? Zone Offroad can help with new 4- and 6-inch lift kits featuring new front leaf packs with antifriction pads and center leaf spacers for a quality ride and consistent spring rate. Kits also include new U-bolts, bushings, shocks, steering arm, rear add-a-leaf and block kit to get your solid axle Chevy/GMC up in the air while improving the ride and handling. Optional accessories include front sway bar shackle link kit and steering stabilizers.
Info: Zone Offroad, 888/998-9663,

Start Here
What: Synergy Suspension Ram 4X4 Starter Suspension System
About: Engineered and manufactured in the USA, the Synergy Suspension Starter System is available for all ’94 and newer Dodge/Ram 1500/2500/3500 trucks and will lift the truck three inches while accommodating up to 37-inch-tall tires. This 100-percent bolt-on system is built to perform with features that include a front adjustable track bar, heavy-duty sway bar links, progressively wound coil springs, heavy-duty rear shackles, and an abrasive-resistant powdercoat finish for maximum durability. To keep the ride smooth, Synergy Suspension offers multiple shock options including all-new Fox Racing Shox 2.0 remote-reservoir Shocks that provide fade-free damping performance.
Info: Synergy Suspension, 805/242-0397,

Deep Gearing
What: High Impact Klune-V David 4 to 1 Extreme Underdrive
About: With the Klune-V David 4 to 1 Extreme Underdrive box, your high range is unchanged for highway driving, but you retain a standard low range for easy wheeling. Then you’ve got a crawl range for rock trails and in addition to all that you get an extreme underdrive range, which is more than twice as low as a low-geared transfer case and four times as low as your standard low range. With the Klune-V, you’ve got gears for all occasions, all at the flick of a lever.
Info: High Impact Transmission & Gear, 888/316-2940,

Connect With Us

Newsletter Sign Up

Subscribe to the Magazine

Browse Articles By Vehicle

See Results