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D-MAX D1SPEC Pillow Ball Rear Upper Arm (Toyota 86/GR86/BRZ)

D-MAX D1SPEC Pillow Ball Rear Upper Arm (Toyota 86/GR86/BRZ)

Regular price $662.99 USD
Regular price Sale price $662.99 USD
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Installing this product allows camber adjustment at the upper arm as well, enabling a wider range of suspension setups than ever, and increasing the rear tire contact patch for much better grip. Simply replacing the bushing with a pillow ball eliminates flex and reduces alignment changes, improving unstable behavior and increasing arm rigidity. We also remade samples many times on a 3D printer to reroute the reinforcement bar away from the frame, so it is less likely to hit the frame even when lowered — allowing setups that weren't possible before.

Co-developed with Kawabata, who drives an 86 as his personal car, does demo runs for TOYO Tires and competes in the D1 GRAND PRIX series in a GR86.


Product specifications


Rod diameter Max 35.2Ф / some sections 25.6Ф
Rod thickness 5mm
Pillow ball outer diameter 50Ф
Pillow ball inner diameter 18Ф
Adjustment range Approx. 55mm
*From OEM baseline: just under approx. 10mm to the negative side / just under approx. 50mm to the positive side

Compatible chassis codes


86/GR86 ZN6/ZN8
BRZ ZC6/ZD8
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