Upgrade your vehicle’s performance with our reinforced tubular rear subframe—a precision-engineered solution designed to enhance structural rigidity, reduce weight, and optimize handling. In today’s competitive motorsport environment, using a reinforced tubular subframe is critical. It not only improves chassis stiffness and minimizes flex during high-stress maneuvers, but also reduces overall mass and refines suspension geometry for more precise handling. This advanced engineering approach ensures that your car can handle higher loads and deliver improved performance on the track.
Experience the pinnacle of precision engineering and performance enhancement with our reinforced tubular subframe—a must-have upgrade for serious track enthusiasts and performance drivers. This is our second generation of rear tubular crossmember for Toyota Supra A90.
Reinforced Tubular Rear Subframe
After an extensive development and testing program, we are proud to make this high-performance rear subframe available to enthusiasts and racers alike. The development process involved 3D laser scanning of the car, detailed CAD design, rigorous FEA (Finite Element Analysis) testing, and comprehensive road tests—ensuring that every component meets the highest standards of durability and performance.
Engineered for Excellence:
- High-Performance Materials:
Constructed using the same T45 tubing found in World Rally Championship (WRC) vehicles, our subframe provides exceptional stiffness and a significant mass reduction. T45 tubing is renowned for its superior strength and durability compared to traditional Co-Mo 4130, and is widely utilized in aerospace applications for its ability to withstand extreme G forces. - Lightweight Advantage:
Our subframe is 6.5 kg lighter than the OEM rear subframe—resulting in a 33% weight reduction on the rear axle. This reduction directly translates into enhanced agility and improved performance on the track. - Optimized Component Positioning:
The rear final drive is repositioned 10 mm upward (approximately ⅜”) to better align the drive shafts, reducing excessive loads on the CV joints. This design change helps prevent premature wear and extends the lifespan of your drivetrain components. - Direct Chassis Integration:
By eliminating traditional rubber mounts and implementing a single, direct mounting point with smaller mounting holes, our design prevents unwanted subframe movement under high loads, ensuring consistent performance even in extreme conditions. - Enhanced Adjustability:
An additional bump steer adjustment feature on the subframe allows fine-tuning of the rear toe link pickup point. This adjustment capability is crucial for achieving the optimal suspension geometry, further enhancing the car’s handling and stability during dynamic driving. - Improved Drivetrain Stability:
Factory rear final drive rubber mountings have been replaced with high-performance race car black polyurethane mounts. These 85ShA mounts significantly reduce drivetrain slop, ensuring a more efficient transfer of torque to the wheels.
Key Features:
- Unobstructed Underbody Access:
The design offers increased clearance, making it easier to access and service components beneath the car. - Enhanced Chassis Rigidity:
The tubular frame construction, using T45 (BS4T45 to BS4T100) tubing paired with S355 steel sheets, dramatically increases chassis stiffness for improved handling and performance. - OEM Compatibility:
Retaining all OEM mounting points for wishbones, sway bar, brake line wires, exhaust system, and headlight range sensors, our subframe is a true plug-and-play upgrade. - Precision Engineering:
Designed, fabricated, validated, and rigorously tested in Poland by our expert team. Each subframe undergoes thorough crack detection on welds and comprehensive quality control prior to shipping. - Aesthetic Appeal:
Finished with a sleek powder-coated black exterior—other color options are available at an additional cost.
What’s Included:
- Pre-assembled rear subframe powder coated in black (alternative colors available for an extra 50 euros/USD)
- 24-piece set of steel lockout wishbone positioning shims for rear toe link adjustment (covering -5 to +5 mm adjustments)
- Bolt and nut kit for mounting toe links (zinc-plated, grade 10.9)
- 8-piece set of steel lockout wishbone positioning shims for camber wishbone adjustments (-3.5, 0, +3.5 mm)
- Race-grade polyurethane mounts for the rear differential
- Exhaust system mounting bolt (zinc-plated, grade 10.9)
- Printed installation instructions
Compatibility:
This subframe is engineered for use with select high-performance models, including:
- Toyota Supra A90
- Toyota Supra A91
- BMW Z4 G29
Material Specifications:
T45 Tubing Properties:
- Tensile Strength: 700–900 MPa
- Yield Strength (0.2%): Minimum 620 MPa
- Hardness: 201–262 HB or 210–275 HV
OEM Part Replacements:
- 33316794865
- 33316795830
- 51206WAA04
- 51206WAA05
Important Notices:
- An adjustable toe link is required to correctly set toe alignment, as the subframe utilizes bump steer adjustment in lieu of direct toe adjustments. If you do not have an adjustable toe link, please refer to our provided link for further details.
- This subframe is intended solely for off-road, track, and racing applications. Installation may result in increased noise, vibration, and harshness (NVH). We strongly advise that installation be carried out by a qualified, experienced workshop.