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Siberian Bushing™

Premium OEM Standard PU Bushings for daily driving and challenging road conditions

Strongflex™

Bushings for motorsport, drift and racing with a hardness of 80 Sha (red PU) / 90 Sha (yellow PU)

SPL Parts™

High-performance adjustable control arms, camber links, and traction arms for both street and track applications

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The Toyota GR Corolla E210 is built around a high-performance GR-FOUR AWD system that places significant load on the rear differential mounts during hard acceleration, cornering, and track use. Upgrading the factory rubber bushings to polyurethane significantly improves drivetrain control and power delivery.

Standard Performance Option – 80 Sha (Motorsport / Track-Day Focus)

Rear Differential Mount Polyurethane Bushing Kit

Part #: 212075B – Rear Diff Mount, Front Bush
Quantity: 2 pcs
OEM references:
41653-42010
41653-52010
41651-42070
52380-52050

Part #: 212076B – Rear Diff Mount, Rear Bush
Quantity: 1 pc
OEM reference:
41651-52020

Specifications:

  • Material: Polyurethane (PUR / PU)
  • Hardness: 80 Sha
  • Required per vehicle: 1 set (2 front + 1 rear)

Recommended use:
For daily-driven vehicles with occasional track days, spirited street driving, and light motorsport use. The 80 Sha compound offers a strong balance between improved power transfer and manageable NVH levels.

SPORT Option – 90 Sha (Maximum Performance / Competition Use)

For drivers seeking maximum drivetrain rigidity and response, we also offer SPORT-spec bushings with higher hardness:

Part #: 212075A – Rear Diff Mount, Front Bush SPORT
Quantity: 2 pcs

Part #: 212076A – Rear Diff Mount, Rear Bush SPORT
Quantity: 1 pc

Specifications:

  • Material: Polyurethane (PUR / PU)
  • Hardness: 90 Sha

Recommended use:
Ideal for time attack, racing, drift, and dedicated performance projects where drivetrain precision is critical. These bushings provide minimal differential movement and the most direct power delivery to the wheels, with increased vibration and noise expected.

Key Performance Benefits (All PU Options)

  • Reduced rear differential movement under load
  • Faster and more direct throttle response
  • Improved traction and power transfer
  • Enhanced control during aggressive driving
  • Designed for motorsport-oriented GR Corolla builds

Important Note

Polyurethane differential mount bushings are not equivalent to OEM rubber parts. Increased vibration and drivetrain noise are normal, especially with higher hardness compounds. Selection should be based on how the vehicle is used.

For street and mixed-use builds, 80 Sha bushings are generally the better choice. For competition and high-performance applications, 90 Sha SPORT bushings are strongly recommended.