Massi CM 506 adjustable road and mountain bike stem

An adjustable stem for easily customising your position on the bike

The Massi CM 506 adjustable stem is designed for cyclists who want to easily adapt the handlebar position to their body shape, riding style or comfort preferences. Made from aluminium, it allows you to adjust the angle of the handlebars within a range of up to 60°, enabling you to achieve a more aggressive position or, conversely, a more upright one.

Available in 90 mm or 110 mmversions , with handlebar clamp diameters of 25.4 mm or 31.8 mm, the CM 506 is suitable for a variety of bike set-ups, including road, mountain, touring, fitness and city cycling.

Key features of the CM 506 Massi

• Adjustable angle up to 60° to customise your riding position.
• Robustaluminiumconstruction .
• Available in 90 mm and 110 mmversions .
• Compatible with 25.4 mm or 31.8 mmhandlebars , depending on the version.
• Handlebar clamped with 4 Allen screws.
• Compatible with a 1-1/8"fork steerer tube on Ahead versions.
• An attractive solution for improving the ergonomics of the handlebar set-up.
• Suitable for various disciplines: road cycling, mountain biking, trekking, fitness and city cycling.
• A sleek black finish that blends in easily with most bikes.

An adjustable stem for improved comfort

The main advantage of the CM 506Massi e lies in its angle adjustment. By changing the stem’s angle, the cyclist can bring the handlebars closer or raise them to adopt a less stretched-out position.

This feature is particularly useful for bikes used over long distances, fitness bikes or set-ups designed for cycle touring. It also allows you to fine-tune your position without having to replace the handlebars straight away.

An adjustable stem can therefore be a useful solution when a cyclist wishes to gradually find a more comfortable position or adapt their bike to different uses.

A versatile model for road, mountain and city bikes

The CM 506 is available in various diameter and length configurations. The 31.8 mmversion , often referred to as ‘Oversize’, corresponds to the clamp diameter of many modern handlebars. A 25.4 mm version is also available for standard-diameter handlebars.

Before purchasing, it is therefore essential to check the diameter of the handlebar and that of the fork steerer tube, as well as the desired length.

Adjustment range from 0 to 60°

The adjustment range is this stem’s key selling point. According to the available technical specifications, the CM 506 allows adjustment from 0 to 60°.

This range allows you to significantly adjust the height and angle of the handlebars. A position with a slight rake will maintain a relatively sporty feel, whilst a steeper angle will raise the riding position further.

However, the adjustment must be carried out with care and the tightness of the screws checked regularly.

Technical specifications