Yamaha 1670 ROAD STAR WARRIOR 2005 — Specifications

Somewhere in the mid-2000s, the custom segment cracked under pressure. Big American-style displacement machines could no longer get away with their imposing silhouette without dynamic character to match. Honda was hitting hard with its VTX 1800, Kawasaki was stirring the waters with the Mean Streak 1500, Harley-Davidson was provoking with the V-Rod. In this race for muscle, Yamaha didn't respond with a simple cosmetic evolution. With the Yamaha 1670 Road Star Warrior, the Japanese manufacturer drew something different: a custom that fully owns its sporting ambitions, even at the cost of shaking up the segment's conventions.

The V-twin derived from the Wild Star was bored out to 97 mm with a 113 mm stroke, bringing displacement to 1,670 cc. The result: 86 horsepower at 4,500 rpm and, more importantly, 141.2 Nm of torque at 3,500 rpm — a figure the Suzuki Hayabusa doesn't reach at a comparable rev range. Fuel injection replaces the carburetor, and the engine gains in responsiveness what it loses in folklore. Aesthetically, Yamaha chose the arsenal over the ornamental: a gaping air intake on the left, a massive exhaust on the right whose diameter is more reminiscent of military hardware than a chrome showroom piece. The machine is long, black, and visually heavy. It doesn't try to please everyone, and that's precisely what gives it character.

Beneath the bodywork, the steel double-loop tubular frame borrows its geometry from the Wild Star but in a stiffer iteration. The 41 mm inverted telescopic fork and four-piston front calipers come straight from the R1 catalogue. The rear follows suit with a mono-shock, a swingarm with a sporting cross-section, and a 282 mm disc brake. This is not a custom dressed up as a sportbike — it's a sportbike dressed up as a custom. The distinction matters. The 200/50-17 rear tire plants the machine visually, while the two 298 mm front discs deliver serious stopping power for the claimed 297 kg wet weight.

In the saddle, the engine reveals its true nature. The twin spins smoothly, without hesitation, with those low-frequency vibrations that belong to American riding culture. A slight twist of the wrist is enough to wake the 141 Nm, and the response is honest, direct — no violence, but no delay either. The five-speed gearbox and belt drive contribute to this overall smoothness. But what truly surprises is the cornering behavior. For 297 kg, the machine places itself with a precision that betrays its premium components. The footpegs only scrape when you're genuinely pushing the lean angle, where some competitors start throwing sparks at the slightest bend. The claimed top speed of 190 km/h is not a marketing argument: this machine rides fast and stays stable doing it.

The one dark spot — and it's significant — is the riding position. Arms stretched toward a distant handlebar, forward-set footpegs, arched back: this is pure custom posture, and it comes at a cost in fatigue over long distances. The 730 mm seat height is low and accessibility is good for a range of builds, but the spine makes its disagreement known past the 150-kilometer mark. For a passenger, the space is so limited that the experience is best avoided. The Yamaha 1670 Road Star Warrior is a solo rider's machine, built for the person who wants muscle bike power with the behavior of a real motorcycle. At €13,722 in 2005, it positioned itself as an investment for the demanding rider — a fan of instant torque and serious cornering. Not a beginner, not a tourist, but someone who knows exactly what they're looking for.