Product Information

Dirt Logic Shocks

The best shocks only get better with all new Stainless Steel and Aluminum construction. High grade 304 Stainless Steel shock bodies eclipse all other shocks on the market for maximum corrosion resistance. Each Stainless Steel shock body receives a finely detailed machine finish for a stunning appearance.


Dirt Logic Stainless Steel reservoir shocks have been upgraded with black anodized 6061 Aluminum reservoir bodies. This includes both piggyback and remote reservoir shocks. The Aluminum construction allows for greater heat dissipation thereby keeping the shock cooler to reduce fade during aggressive offroad use.


Finally each Dirt Logic piston rod has been upgraded to a NitroSteel® material that is super hard while providing increased corrosion resistance compared to chromed piston rods. Get the finest ride with maximum corrosion resistance only from Dirt Logic shocks.


In addition to the specific Dirt Logics for each suspension system, there is also a line of universal Dirt Logic shocks available in reservoir and non-reservoir styles, ranging from 8 to 16 inches of stroke. These universal shocks are sold with universal hardware kits for easy installation.


Dirt Logic 2.0" and 2.25" shocks feature urethane bushings in the mounting points to reduce road noise and rattling associated with spherical bearings. Dirt Logic coilover shocks utilize spherical bearings at each end for increased strength along with urethane misalignment cups in the top caps. The misalignment cups keep the road noise transferred through spherical bearings to a minimum.


Dirt Logic 2.5" and 4.0" coilover shocks use coil springs made to the highest quality standards possible. All Dirt Logic coils possess the ability to go solid without breaking, settling or bowing. All Dirt Logic coilover shocks come preset with the proper amount of preload so they can be bolted on without any further adjustment necessary.


Dirt Logics are available with or without an external reservoir. External reservoirs are used to accommodate additional oil and nitrogen volume. The additional oil volume helps keep the shock cooler. The additional gas volume helps to keep more consistent control forces over a variety of temperatures.

Dirt Logic Shocks
  • 1. Separate Gas and Oil Construction: Dirt Logic shocks utilize a dividing piston to separate the high pressure nitrogen gas from the oil. This design keeps the shock from fading and helps retain a consistent ride at all times. Some competitor's shocks do not separate the oil and gas with a dividing piston, creating an emulsion shock. Emulsion shocks are not a good design. Performance of an emulsion will decrease quickly with heavy use. Quality Dirt Logic shocks have dividing pistons to separate the gas and oil for the best possible ride and performance.
  • 2. Aluminum Reservoir: The 6061 Aluminum resi construction allows for greater heat dissipation thereby keeping the shock cooler to reduce fade during aggressive offroad use.
  • 3. Ride Tuned: Each Dirt Logic shock has been extensively ride tuned by vehicle suspension application to provide a comfortable highway ride with good offroad damping. Fabtech has taken the time to do this extensive shock tuning to get the most out of the ride. No generic "60/40" or "70/30" valving as others have done.
  • 4. Shock Body Material: High grade 304 Stainless Steel shock bodies eclipse all other shocks on the market for maximum corrosion resistance.
  • 5. Length Specific: The correct length shock by suspension application is paramount for proper functionality. Fabtech is the only manufacturer that builds both suspension and take apart shocks in house for complete compatibility. This is very important as when a suspension system is designed it can have a different rate of travel even if it is for the same vehicle. There is no one shock that fits all 4" or 6" suspension systems on the market for the same application. Only Fabtech has designed the specific length shock that fits the suspension properly without compression or rebound binding issues.
  • 6. Aluminum finish: Fabtech polished black anodized finish is a neutral tone that goes with every color vehicle. It is subtle and is accented by the stainless steal shock body for a high end appearance. Before the black anodizing process takes place the aluminum parts are polished. This additional step of polishing creates a smooth surface for the anodizing to coat leaving a deep black luster.
  • Built in Chino CA, not China: All Dirt Logic shocks are hand built by Fabtech employees in Chino California USA. Not by some factory worker in another country that has taken an American's job away.

Dirt Logic 4.0

Dirt Logic 4.0

The Dirt Logic 4.0 provides the ultimate in hardcore offroad dampening capacity with superior highway comfort in a big package. This massive high end shock is designed for full size vehicles that required the biggest and best Coilover shock in a bolt on configuration. Nothing else comes close.

  • 4.0" OD Stainless Steel Body
  • 3 5/8" OD Billet Aluminum Piston
  • 1.25" NitroSteel® Black Piston Rod
  • Adjustable Coilover Construction
  • 3/4" Spherical Ball Mounting Endsv
  • 4.0" OD Piggyback, Remote Resi or Non Resi

Dirt Logic 2.5

Dirt Logic 2.5

From Fabtech desert racing experience the Dirt Logic 2.5 has been developed for exceptional performance in a variety of Coilover applications. The Dirt Logic 2.5 will provide incredible dampening capacity for aggressive offroad driving.

  • 2.50" OD Stainless Steel body
  • 2.25" OD Billet Aluminum Piston
  • 7/8" NitroSteel® Black Piston Rod
  • Adjustable Coilover Construction
  • 5/8" Spherical Ball Mounting Ends
  • Optional 2.5" OD Aluminum Reservoir w/-8 Stainless Steel O-ring Hose

Dirt Logic 2.25

Dirt Logic 2.25

Dirt Logic 2.25 are designed to replace factory shocks with a larger, more robust configuration. The 2.25 size is what separates it from other replacement take apart shocks for a superior ride, both on and off road. Shocks are pretuned for each Fabtech suspension, accounting for larger tires, providing the finest all around damping.

  • 2.25" OD Stainless Steel Body
  • 2.0" OD Billet Aluminum Piston
  • 7/8" NitroSteel® Black Piston Rod
  • Polyurethane Mounting Ends
  • Optional 2.25" OD Aluminum Reservoir w/-6 Stainless Steel O-ring Hose

Custom Applications

Fabtech custom length Dirt Logic 2.25 shocks come with a preset valving of 60% compression and 40% rebound valving. Shocks include urethane bushings in the mounting eyes. Fabtech offers optional spherical bearings for an upgrade over the urethane and valve shim kits for custom tuning.

Dirt Logic 2.0

Dirt Logic 2.0

The latest in the Dirt Logic shock line is the 2.0" shock designed for applications where Fabtech 2.25 is physically too large to fit. Available for lifted applications in the stock shock position and multiple shock configurations. The Dirt Logic 2.0 is available in a reservoir and non reservoir style with outstanding dampening capacity for both on and offroad.

  • 2.0" OD Steel Body
  • 1 5/8" OD Billet Aluminum Piston
  • 7/8" Induction Hardened Chrome Steel Piston Rod
  • Polyurethane Mounting Ends
  • Optional 2.0" OD Reservoir w/ -6 Stainless O-ring Hose

Dirt Logic 2.25 Bump Stop

Dirt Logic 2.25 Bump Stop

Race quality hydraulic Dirt Logic Bump Stops will aid in cushioning heavy suspension compression in severe use. The Dirt Logic 2.25 Bump Stops are available in kit form for specific applications or individually for custom applications. Also available for custom fabrication use is the Dirt Logic 2.5 Bump Stops for extreme use.

Dirt Logic 2.25 Billet Resi Clamp

Dirt Logic 2.25 Billet Resi Clamp

Constructed of 6061 aluminum, these optional clamps securely attach the Dirt Logic 2.25 reservoir's to the shock body. Anodized and laser etched, these clamps will add a finished look to any vehicles shock system. Sold as an individual clamp.

Dirt Logic 2.25 Steering Stabilizer

Dirt Logic 2.25 Steering Stabilizer

Utilizing Fabtech Dirt Logic 2.25 shock design Fabtech has developed a steering stabilizer that will provide the ultimate in steering dampening for use with oversized tires and wheels. These Dirt Logic Steering Stabilizers are designed for vehicle specific applications and will complete your vehicle's Dirt Logic Shock upgrade.

Stealth Shocks

Stealth Monotube Shocks

Stealth Monotube Shocks

Stealth is the first all black monotube shock absorber, with an identifiable raised metal nameplate, that represents the signature of quality you can rely on for a superior ride at an affordable price.


Stealth monotube shocks are built with a 46mm diameter high flow piston and vehicle specific valving, for a great ride with oversized tires. Each Stealth shock absorber has a free floating piston that separates the nitrogen gas charge from the oil to reduce shock fade in offroad conditions.


All Stealth shock absorbers feature Nitrocarburized piston rods that are superior to chromed rods in durability and corrosion resistance. These "Nitrocarb" piston rods are finished in matte black for a complete "black out" shock package.

  • Monotube construction
  • 50mm OD seamless steel body
  • 46mm High flow piston for best ride
  • Vehicle specific valving designed for oversized tires
  • Full floating piston separates gas from oil for a consistent ride
  • 14mm Nitrocarb piston rod resists rock chips and corrosion
  • All black finish with raised nameplate as a signature of quality
Performance Shocks
Performance Shocks

Fabtech Performance Shocks have been designed to work in conjunction with each of Fabtech suspension systems, resulting in superior ride control. Features include high velocity 9-stage valving for excellent dampening capabilities and a closed cell insert to reduce shock fade at high speeds.

  • Twin Tube Hydraulic Construction
  • 9/16" Hardened Chrome Piston Rod
  • 1 3/8" OD Piston
  • Closed Cell Foam insert
  • High Flow 9 Stage Valving
  • Polyurethane Bushings

A twin tube shock absorber consists of a thin wall inner pressure tube and outer reserve tube. The inner tube houses the valving components, piston and base valve, and is where the damping forces are generated. The outer tube acts as a reservoir for displaced fluid from the shaft volume during the compression stroke. Also contained in the outer tube is a foam sleeve or gas bag that contracts and expands with respect to shaft displacement to eliminate air pockets and increase the performance of the shock.

Performance Front Dual Shocks

Performance Front Dual Shocks

For increased dampening capacity Fabtech offers a Front Dual Shock System.

Performance Rear Dual Shocks

Performance Rear Dual Shocks

Performance Steering Stabilizer

Performance Steering Stabilizer

Using the same construction as Fabtech Performance Shocks these Performance Steering Stabilizers will reduce front end shimmy from oversized tires and wheels. Easy fit heavy duty bracketry allows for a quick installation. Available in single and dual stabilizer applications.