As the largest vehicle specific take apart, monotube shock on earth, the Dirt Logic 4.0 continues to expand its applications to include a remote reservoir style for GM HD's. The Dirt Logic 4.0 will provide the ultimate in hardcore offroad dampening capacity with superior highway comfort. Nothing else comes close.

• 4.0" OD Steel body
• 3 5/8" OD Billet Aluminum Piston
• 1.25" Hardened SteelPiston Rod
• Adjustable Coilover construction
• 3/4" Spherical Ball mounting ends
• 4.0" OD Piggyback Reservoir

2.5 Specs

Derived from our desert racing circuit the Dirt Logic 2.5 is an exceptional performance shock that has been developed for a variety of Coilover applications. The Dirt Logic 2.5 will provide incredible dampening capacity for aggressive offroad driving.

• 2.50" OD Steel body
• 2.25" OD Billet Aluminum Piston
• 7/8" Hardened Steel Piston Rod
• Adjustable Coilover construction
• 5/8" Spherical Ball and ureth