Outback Kitters 2.5" Reservoir Shocks for 2011+ GMC Chev 2500/3500

Control The Heat. Control The Track.

Heavy trucks generate serious heat.

Add a canopy, tools, a caravan or a fully equipped touring setup, then point the truck at hundreds of kilometres of corrugations, and standard shocks quickly reach their limit.

As temperatures rise, damping begins to fade. The truck feels less settled. Body movement increases. Steering confidence drops. The road hasn't changed—the suspension has.

The Outback Kitters 2.5" Remote Reservoir Shocks were engineered for exactly these conditions.

The remote reservoir isn't there for appearance. It's there to manage heat.

By increasing oil capacity and adding a finned external reservoir, these shocks maintain consistent damping throughout long days on rough Australian roads, helping your Silverado or Sierra 2500 HD stay composed under heavy loads.

This is the heavy-duty step beyond a monotube for trucks that work hard and travel further.

Built For The Whole Trip. Not The First 20 Minutes.

Heat is the enemy of every shock absorber.

Every compression forces oil through the internal valving, creating heat. On endless corrugations, that heat builds rapidly. As temperatures climb, damping performance falls away, leaving the truck to wallow and float when control matters most.

The Outback Kitters remote reservoir provides greater oil capacity and additional cooling surface area, allowing the shock to manage heat over sustained punishment.

The result is consistent damping that lasts the distance, keeping your truck planted from the first corrugation to the last.

Why It Works

Remote Reservoir Thermal Management

The finned external reservoir increases oil capacity and cooling surface area, helping maintain consistent damping over long distances, heavy loads and relentless corrugations.

Custom Valved For American Trucks

Specifically tuned for the weight and suspension characteristics of the Chevrolet Silverado 2500 HD and GMC Sierra 2500 HD, delivering controlled suspension movement whether touring, towing or working.

Large 2.5" Zinc-Plated Steel Body

The oversized shock body carries more suspension oil for greater thermal stability, while the zinc-plated finish helps resist corrosion in Australia's harsh conditions.

Flexible Reservoir Installation

Long remote reservoir hoses and rotating hose heads allow simple installation while providing flexibility to position the reservoir for maximum cooling efficiency.

Protected For Australian Conditions

Rubber boots help protect the shock shaft from stones, mud and debris encountered on remote roads and demanding off-road tracks.

Engineered For The Long Haul

The Outback Kitters 2.5" Remote Reservoir Shocks are built for heavy-duty American trucks that spend their time carrying weight, towing loads and covering serious distances.

Whether your Silverado or Sierra is loaded with a canopy, drawers, tools, recovery gear or towing a large caravan, these shocks provide the thermal headroom needed to maintain control when ordinary shocks begin to fade.

Because the real measure of suspension isn't how it performs on the first stretch of road—it's how well it performs after hours of sustained punishment.

More oil. More cooling. More consistency.

Control The Heat. Keep Driving.