HMMWV In Scale

Self-Protection Adaptive Roller Kit (SPARK)

The SPARK was designed to be mounted on tactical wheeled platforms. It was used in Iraq on three platforms: the M1114/1151 armored High-Mobility Multipurpose Wheeled Vehicle (HMMWV), the RG-31 and the M900 5-ton truck series.

The SPARK is manufactured by Pearson Engineering (their roller design was already in use on the Stryker). The first production contract was awarded 9 Jan 2007. Soldiers in Iraq received the first roller kits 90 days after contract award. March 2007 combat operations with SPARK began.

SPARK is managed by Product Manager IED Defeat/Protect Force (PM IEDD/PF), which is a part of the Project Manager Close Combat Systems (PM CCS), Program Executive Office Ammunition(PEO Ammo), based at Picatinny Arsenal, NJ.

Two SPARK configurations were initially fielded in Iraq and Afghanistan. The track-width front roller configuration attaches to the frame of the RG-31 and the HMMWV, the two vehicles most commonly used for deliberate route-clearance operations. The full-width configuration attaches both a front and rear roller to the M900 5-ton truck series. This version is intended for use on vehicles that are part of fast-moving logistical convoys.

In both configurations, the front roller consists of two roller banks on the vehicle’s left and right side, its sole purpose being the defeat of any IED. These roller banks provide contact with the ground, causing the IED to detonate on the roller, forcing as much of the blast down and out as possible, as opposed to underneath the vehicle. The purpose of having the two rollers in front and back in the full-width configuration is that the rear roller also has a hydraulic system that controls rollers, allowing the vehicle to move faster down the road and be more stable.

In this photo is an M1151 with a SPARK attached undergoing trials at Yuma Proving Ground.