Tomei Titanium exhaust system R33 GTR

The Tomei Expreme Ti Full Titanium Muffler for the Nissan Skyline GT-R R33 (BCNR33) is a high-performance cat-back exhaust system designed for maximum weight reduction and improved gas flow.

It features a “racing layout” with minimal bends to optimize power gains for the RB26DETT engine.

Product Specifications

According to Vivid Racing and Bulletproof Automotive, the system’s specifications are as follows:
Material: Full Titanium construction.

Weight: 15.8 lbs (7.15 kg), providing a significant weight saving of over 25 lbs compared to the stock 41.7 lb system.
Main Pipe Diameter: 3.5 inches (89.1 mm).

Main Pipe Thickness: 1.0 mm.

Exit (Tip) Diameter: 4.53 inches (115 mm) with a blue gradation burnt finish.

Design: 3-section assembly using slide joints with springs and clamps instead of traditional flanges and gaskets to further reduce weight.

Sound and Performance
Reviewers from YouTube and product descriptions from Vivid Racing highlight several key characteristics:

Exhilarating Tone: Described as producing a rich, throaty growl that brings the GT-R to life.

Extreme Volume: One long-term user noted the sound is “amazing” but “extremely loud,” effectively acting like a straight pipe.

Drone: Some testers reported unbearable drone between 3,000 and 5,000 RPM, which can interfere with radio listening or conversation during cruising.

Durability: Uses long-fiber wool in the silencer, which Tomei claims outlasts traditional fiberglass under high-temperature racing conditions.

Tomei Titanium exhaust system R33 GTR
Tomei Titanium exhaust system R33 GTR
Tomei Titanium exhaust system R33 GTR