Vintage bike stem ITM Big One

Vintage ITM Big One stem: italian elegance and strength

In the world of classic cycling and high-end bike restoration, some components stand the test of time with unmatched style and function. The vintage ITM Big One stem is one such legendary piece, beloved by enthusiasts for its bold design and riding performance. Let’s take a closer look at this iconic stem that combines retro charm with technical excellence.

ITM: italian craftsmanship for true cyclists

ITM (Italmanubri) is a renowned Italian brand known for producing high-quality cockpit components—stems, handlebars, and headsets—that shaped the look and feel of many top-tier road bikes throughout the 1980s and 1990s.

Among their standout designs, the Big One stem made an immediate impression with its oversized silhouette and cutting-edge specs for its era.

Bold oversized design

The ITM Big One stem features a chunky, oversized clamp diameter that delivers excellent stiffness and responsiveness. Made from forged aluminum, it often comes in a polished silver or matte black anodized finish, combining visual impact with durability.

Key features:

• Material: 7075-T6 forged aluminum for maximum strength-to-weight ratio

• Angle: typically around 10°, optimized for aggressive riding posture

• Lengths: usually available in 110 mm to 140 mm, ideal for classic road bike setups

• Clamp diameter: 31.8 mm (oversized standard), for 1-1/8" steerer tubes

• Weight: around 180 to 200 grams depending on length

The Big One was one of the first stems to embrace a chunky, solid build without compromising on ride balance. It's designed for precise handling, especially during descents and out-of-saddle sprints.

Why choose a vintage ITM stem today ?

If you're restoring a 1990s or early 2000s road bike, or simply want to add a touch of old-school cool to your ride, the ITM Big One stem is a smart and stylish choice. Its aesthetic and build quality elevate any neo-retro build, while its geometry still holds up for modern riding.

Collectors also value its compatibility with period-correct handlebars from ITM, Deda, and others, and appreciate the Italian craftsmanship that rivals today’s high-end components.

The stem: a core piece of the cockpit

Often overlooked, the stem plays a crucial role in the bike’s cockpit setup. It connects the handlebar to the steerer tube, affects riding position, and shapes steering feel and precision. A good stem brings balance between comfort, control, and responsiveness.

The Big One stem does just that—it delivers rigidity without harshness and blends technical function with visual flair, making it a standout in both form and function.

In conclusion

The vintage ITM Big One stem is more than just a bike component—it's a symbol of cycling heritage from a golden era where craftsmanship and performance went hand in hand. Whether you’re a collector, restorer, or simply a fan of beautiful components, the Big One deserves a spot on any well-considered build.