The Toyota GR Corolla (E210) is one of the most exciting modern hot hatches, engineered with true motorsport DNA. Equipped with Toyota Gazoo Racing’s GR-FOUR all-wheel-drive system, the car delivers exceptional traction and handling dynamics. However, when the vehicle is driven aggressively, lowered, or prepared for track use, the factory rear suspension geometry often requires additional adjustment to achieve optimal alignment.
The SPL Parts Rear Upper Camber Arms (RUA E210) provide a precision-engineered solution, allowing drivers to fully optimize rear suspension alignment while eliminating the compliance found in factory rubber bushings.
Toyota GR Corolla (2023+): Key Specifications
The GR Corolla is powered by Toyota’s high-performance turbocharged drivetrain and advanced AWD system.
Engine:
1.6L turbocharged inline-3 (G16E-GTS)
Output (USA market):
300 hp / 273 lb-ft
Transmission:
6-speed intelligent manual transmission (iMT)
Drivetrain:
GR-FOUR all-wheel drive with adjustable torque split modes
Suspension:
MacPherson strut (front)
Double-wishbone multi-link (rear)
Available trims (USA):
- Core
- Premium
- Circuit Edition
- Morizo Edition
Each trim is engineered for performance driving, making suspension tuning and alignment precision especially important for maximizing grip and tire performance.
Why Upgrade to Adjustable Rear Upper Camber Arms?
The factory camber adjustment range is limited, particularly on vehicles that have been lowered or modified for performance driving. The SPL RUA E210 arms provide an extended adjustment range, allowing enthusiasts and racers to dial in the ideal camber settings.
Replacing the OEM rubber bushings with precision spherical bearings eliminates suspension deflection under load. This results in sharper handling feedback and a more predictable chassis response at the limit.
Key Performance Benefits
- Large rear camber adjustment range
- Eliminates factory bushing deflection
- Improves suspension response and chassis feedback
- Enables precise alignment tuning for track or street use
- Helps optimize tire wear and braking stability
Easy On-Car Adjustments
SPL designed these camber arms with an outboard clamp-style double adjuster located near the knuckle for convenient access. Alignment adjustments can be made directly on the vehicle:
- Loosen the 1/4-20 titanium clamp bolts
- Rotate the adjuster to set the desired camber
- Tighten the hardware to lock the setting
This innovative design eliminates jam nuts, preventing alignment settings from shifting during adjustment and simplifying the alignment process.
Materials & Construction
SPL Parts uses aerospace-grade materials and motorsport engineering standards to ensure reliability in demanding conditions.
Key components include:
- 6061-T6 Aluminum arm and clevis (black anodized)
- 6061-T6 aluminum spacers with 360° rotating clamp
- 4130 chromoly steel double adjuster (electroless nickel plated)
- Ti-6Al-4V titanium socket head screws (anodized blue)
- FK PTFE-lined spherical bearings (USA made)
These materials provide high strength, corrosion resistance, and long-term durability, making the arms suitable for daily driving, track days, and competitive motorsports.
Proven Performance
The SPL RUA E210 camber arms have been tested and used on Limit+1’s Gridlife GR Corolla, demonstrating their capability in real motorsport environments.
Fitment
Vehicle:
Toyota GR Corolla (E210) – 2023+
Replaces OEM part numbers:
- 48790-52020
- 48770-52010
Package:
Sold as a pair (one pair required per vehicle)
Manufactured:
Made in the USA
The SPL Parts Rear Upper Camber Arms for GR Corolla are a precision suspension upgrade designed for enthusiasts who want maximum control over their alignment settings. Whether you’re building a track-focused GR Corolla, improving handling on a lowered street car, or optimizing suspension geometry for motorsport, the RUA E210 arms provide the adjustment range and structural rigidity needed to unlock the car’s full performance potential.