OZ Atelier Forged

Ultimate Alu

made in italy

As always, the goal of the OZ Tech Lab was very ambitious – the transfer of R&D technologies and production process optimization developed during conceptualization of the limited edition in magnesium to its offspring – the Ultimate ALU.

The resulting rim met every expectation. Ultimate ALU incorporates the foremost technical features of its magnesium parent while adopting an even sleeker design – thanks to the greater density of the aluminum alloy compared to magnesium (the specific weight of aluminum is 2.74 kg/dm3).

Considering the change in material, at comparable applications (central lock exclusively for Porsche 991 GT2 RS and GT3 RS), its weight is record-setting: the Ultimate ALU weighs 8.97 kg, making it the lightest ever OZ forged aluminum wheel. Rigidity and structural strength also set new records – by applying HLT technology to the unprocessed raw material, a phenomenal strength-to-lightness ratio became reality.

Extremely aggressive side cuts were developed for the Ultimate ALU wheel, which was entirely produced using 5-axis mills to ensure it was lightweight yet also rigid, for improved handling on the already ultra-high-performance Porsche models.

Ultimate ALU rims are available for Porsche 991, 992 and GT4 RS, with staggered fitments of 20” front and 21” rear, in the base Grigio Corsa Bright finish and “personal color” on-demand finishes: Gloss Black, Matt Black, Race White, Star Graphite, Matt Bronze, Race Gold and White Gold.

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Grigio Corsa Bright

White Gold

Gloss Black

Matt Black

Race White

Star Graphite

Matt Bronze

Race Gold

Search by colour Search by diameter

Choose between 8 colours

Colours available in

  • Grigio Corsa BrightGrigio Corsa Bright
  • Matt BlackMatt Black
  • Gloss BlackGloss Black
  • Race WhiteRace White
  • Star GraphiteStar Graphite
  • Matt BronzeMatt Bronze
  • Race GoldRace Gold
  • White GoldWhite Gold

Discover all the diameters available and the relative colours

Diameters available for


    Product Details

    Model Monoblock
    Design Multispoke
    Production process Forged
    Material 6082
    Type of use
    Oe cap ready for Porsche Central Lock
    Offset range 41 - 70
    Width range 8,5 - 13
    Holes Central Lock
    Special applications Porsche 991, 992, GT4RS
    Profiles Flat + Concave
    Finishing chosen
    Diameter chosen
    How find product


     9Jx20 H2  Central lock  41  8,95
     9Jx20 H2  Central lock  51  8,77
     9,5Jx20 H2  Central lock  44  9,11
     9,5Jx20 H2  Central lock  46  9,11
     9,5Jx20 H2  Central lock  50  8,97
     12Jx21 H2  Central lock  45  10,71
     12,5Jx21 H2  Central lock  48  10,87
     11,5Jx21 H2  Central lock  67  10,51
     12Jx21 H2  Central lock  70  10,77


    The weights given refer only to specific applications that are indicated on the table and are subject to a tolerance of +/- 5%

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