A 40 mm mountain bike stem with a 35 mm handlebar clamp, 0 degree rise, and an oil slick finish. The FSA part number on this listing (175-0055104AC0) is the 40 mm version of FSA's Gradient Team LTD OS35 stem.

What it's for

FSA says this stem was developed for its enduro team riders and is aimed at current frames with long reach and slack head angles, where a short stem keeps the steering in balance. It clamps a 35 mm diameter handlebar to a 1 1/8 in steerer.

Features

• CNC machined: The body and the faceplates are 100% CNC machined alloy.
• No Gap faceplate: FSA's No Gap design at the handlebar clamp is intended to add stiffness and durability at the bar interface.
• Hardware: Chromoly bolts.
• Finish: Oil slick surface treatment.

Compatibility

• Handlebar: 35 mm clamp diameter only. A 31.8 mm bar will not fit.
• Steerer: 1 1/8 in (per product title).
• Stack height: The steerer clamp is 35 mm tall. Check that you have that much steerer above your headset and spacers.
• How to check yours: The clamp diameter is printed at the center of most handlebars. Measure your current stem from the center of the steerer to the center of the bar to compare length.

Setup and installation

• Torque: FSA's product page does not list torque values. Follow the values marked on the stem, or have OMG's bike shop install it.

Specs

• Length: 40 mm
• Bar clamp: 35 mm
• Rise: 0 degrees
• Steerer clamp stack height: 35 mm
• Material: alloy, CNC machined
• Bolts: chromoly
• Finish: oil slick
• Use: MTB
• FSA part number: 175-0055104AC0