Kit 4x4proyect 2.65 Prerunner Sprinter 906 and 907 3.8-4.5T Tail Heavy

Kit 4x4proyect 2.65 Prerunner Sprinter 906 and 907 3.8-4.5T Tail Heavy

Mercedes Sprinter models with Tail Heavy configurations suffer from compromised handling: excessively light steering, rear-end dive, and dangerous body roll. Our 4x4project 2.65 Prerunner Sprinter 906 and 907 3.8-4.5T Tail Heavy Kit is not a quick fix; it's a comprehensive engineering system designed to replace the original suspension and restore balance, safety, and comfort to your Overland vehicle.

Suitable for W907 / VS30 4×4 (2018-on) and 906 / NCV3 4×4 (2006-2018) , this kit integrates competition technology to manage the most demanding masses.

Rear Support Coilover System

This is the key component for the "heavy rear" Sprinters. The rear shock absorber allows for the installation of a coilover support spring that works in conjunction with the leaf springs.

• Perfect Leveling: Thanks to its wide preload range, it allows you to adjust the rear height perfectly, recovering the suspension travel lost due to weight.

• Dynamic Stability: Eliminates the "boat" effect and improves the response of the front axle by restoring the correct weight distribution.

2.65″ Monotube Technology

We replaced the original equipment with genuine racing performance.

• 60mm pistons: The largest digressive pistons on the market for vans, guaranteeing oscillation control that no conventional shock absorber can offer.

• Chassis Reinforcements: The kit includes bolt-on structural reinforcements that provide the necessary rigidity for the new suspension to work with maximum precision.

CCV Valves (Hydraulic Accelerometer)

In heavy vehicles, heat is the enemy. The CCV valve manages the pressure according to the impact speed:

• Fading Resistance: Multiplies thermal fade resistance by up to 60% , maintaining control even after hours of driving on demanding tracks.

• Impact Protection: Prevents harsh suspension bottoming out after jumps or deep potholes, protecting the furniture and the vehicle structure.

Military Grade Robustness

• 22 and 28 mm shafts: Manufactured with induction hardening and a hardness of 61-63 Rockwell (HRC) . These are the same components used in high-performance shock absorbers for Baja-type races.

• Oversized FK Ball Joints: We equip the largest ball joint available for this caliber, capable of supporting up to 39,000 lbs of radial load, guaranteeing a service life 150% longer than the competition.

Featured Technical Specifications

Components	Technical specification
Installation	Direct-fit (Bolt-on) without structural modifications
Configuration	Complete replacement (not an add-on)
Thermal Management	Separate bottle 30% larger for maximum nitrogen capacity
Material	High-quality steel bottles, 3 mm thick
Silence	Ball joints with PTFE (Teflon) track to prevent noise
Security	Nitrogen pressure system with double safety cap

Pro Options and Customization

This system is 100% detachable and repairable , also allowing:

• Critical Environments: Option of stainless steel ball joints and anti-corrosion ceramic treatment (ideal for coastal routes).

• Control Pro: 2.5″ external compression stop with three stages of hardness.

• Final Adjustment: Custom hoses and fittings to optimize assembly according to the bodywork.

Regain control and stability of your Sprinter Tail Heavy with 4x4proyect design engineering.

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