Comprehensive overhaul program for Quattroporte V and GranTurismo subframes, addressing the critical rust issues that plague these models due to design flaws and inadequate factory coatings. Over time, these subframes are prone to severe corrosion, particularly at the upper control arm buckets, which rot out due to trapped moisture, dirt, and road salt. Our overhaul process ensures that these subframes are restored to a high standard of performance and durability, addressing the root causes of rust and improving the overall lifespan of the chassis.
Key Features of Our Subframe Overhaul:
- Rust Removal & Repair: Each subframe is carefully blasted to remove all corrosion, followed by thorough inspection for any signs of structural damage. Any areas showing signs of wear or stress are repaired to ensure full integrity before moving on to the next phase.
- Reinforced upper control arm mounts: We've redesigned the upper control arm mounting points they are now 20% thicker and the internal bracing is re-angled to offer more load spread.
- Coating: After repairs are completed, each subframe undergoes coating for a durable, long-lasting finish that offers superior protection against corrosion and harsh environmental factors. The new coating not only restores the subframe's appearance but also significantly enhances its resistance to rust, dirt, and moisture, we fill the frame with a internal chassis wax so all the hollow spaces have a protection layer.
In Stock and Available:
- Quattroporte V ZF (automatic)
- GranTurismo
- Quattroporte V DuoSelect/F1 (2005-2007)
- Alfa Romeo 8C competizione
Limited Stock:
- Quattroporte V 2004 (first production run with small bushing control arms) –
Common Issues with the Original Subframes:
The primary issues arise from poor design and inadequate protection against environmental factors:
- Upper Control Arm Bucket Corrosion: The upper control arm mounts are designed to fit into specific pockets on the chassis rails. Over time, dirt, mud, and moisture get trapped between the chassis and the subframe, particularly in wet or salty environments. This results in significant corrosion that is often not visible until the subframe is removed for inspection. In some cases, a screwdriver can be inserted into the lower supports during an MOT inspection, highlighting the severity of the issue.
- Lack of Drainage: One of the most significant design flaws is the absence of proper water drainage points. The control arm buckets and U-beams connecting the subframe to the chassis trap water, salt, and dirt, which sits inside these pockets, accelerating rust. This stagnation of moisture causes the metal to corrode, leading to severe structural damage over time.
By addressing these design flaws, we provide a reliable solution that restores the structural integrity of the subframe, preventing future issues and extending the life of your vehicle.
Why Choose Our Overhauled Subframes?
- Superior Protection: Our powder-coating and repair process provides the best defense against environmental corrosion, offering better protection than the factory finish.
- Restored Structural Integrity: Through extensive repairs and quality control, we ensure that each subframe meets or exceeds OEM standards for strength and reliability.
- Availability & Custom Solutions: We stock and refurbish subframes for several model years and variants, ensuring that you get the right part for your vehicle. If we don’t have a core frame in stock for your model, we’re actively sourcing additional frames to meet demand.
Whether you're replacing a severely corroded subframe or proactively protecting your vehicle from rust, our overhaul program ensures your Maserati stays in peak condition for years to come.