McLaren 600LT Exhaust System 13HA055RP

In 2026, the part number 13HA055RP refers to one of the most distinctive features of the McLaren 600LT: the Top-Exit Exhaust System. This system is not just an aesthetic choice; it is a critical engineering component that reduces weight, improves engine cooling, and creates the “Longtail” signature flame-spitting soundtrack.

1. Technical Overview

The 13HA055RP is the complete rear exhaust section that sits directly above the engine, venting through the rear decklid rather than the bumper.

• Material: Lightweight stainless steel with specialized heat shielding. (Note: Many 600LT owners upgrade to titanium, but this part number refers to the Genuine McLaren Sport Exhaust assembly).

• Weight Saving: By exiting through the top, the exhaust path is significantly shorter than the 570S system, saving approximately 12.6 kg (28 lbs).

• Backpressure: The shortened path reduces backpressure, allowing the 3.8L Twin-Turbo V8 to breathe more freely, contributing to the 600LT’s 592 hp (600 PS) output.