To push the boundaries of the newly launched 911, Porsche developed a limited series of race-prepped variants with a singular focus: weight reduction. These ultra-light machines marked the beginning of a legendary motorsport legacy, setting the stage for decades of GT-class dominance.

In the spring of 1967, four prototype cars emerged from Porsche's experimental department. Every non-essential or heavy component was removed or replaced with a lightweight alternative. Body panels — including the doors, hood, engine lid, and bumpers — were recreated in fiberglass. Plexiglass windows replaced standard glass, and the interior was stripped to its bare essentials, sacrificing comfort in pursuit of performance.

The result was the now-iconic 911R, weighing just 810 kg (1,786 lbs) — a dramatic 230 kg (over 500 lbs) lighter than the standard 911 of the era. This extreme weight savings strategy not only unlocked the 911’s full potential but also laid the foundation for Porsche’s enduring success in GT racing. The 911R wasn’t just a car — it was the birth of a motorsport legend.

At Kroon Wire Harnesses, we proudly supply factory-correct wiring solutions even for the rare 911R variant. Whether you're restoring an original example or building a period-correct replica, we offer the precise wiring looms — including the thinner battery cable, ignition wiring,  deleted clock wiring, and the specific loom for the distinctive “R” rear lights !