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Forged Magnesium Wheel Set, 20×9.5 / 21×12.5, GT2 RS / GT3 RS (991)

Manthey's magnesium set, quoted at nearly 32 lb under the standard GT3 RS wheels — the largest unsprung saving in this catalog.

Wheels In production confidence: medium

Manufacturing

Manufacturer Manthey Racing
Origin 🇩🇪 Germany
Vendor head office — place of manufacture not stated
Process Forged
Additively manufactured No
Material Forged Magnesium

Published figures

Basis Published by the manufacturer; not independently verified.
Notes Sources conflict: one retailer quotes nearly 32 lb (14.5 kg) against the standard GT3 RS wheels, another 12.6 kg for the same set. Both are recorded rather than averaged — a 1.9 kg spread suggests different reference wheels, not a rounding difference, and it needs confirming with Manthey before publication.

Fitment

991 GT3 RS, GT2 RS

Sources

  1. Manthey Racing Forged Magnesium Wheel Set for 991 GT2 RS / GT3 RS — Bulletproof Automotive, accessed 2026-08-17