1. Home » Bikes and Tech » Technical FAQ with Lennard Zinn: Koski Stronghold Deluxe mountain-bike stem

Technical FAQ with Lennard Zinn: Koski Stronghold Deluxe mountain-bike stem

Features: The Koski Stronghold Deluxe is a forged hollow stem of 6061-T6 aluminum with a four-bolt polished silver front plate. The shaft is matte black. The Stronghold Deluxe stem is available in two finishes, called “shot peened black” and “polished silver,” two angles, namely 7 and 15 degrees,and five lengths: 60, 75, 95, 110 and 130mm.

All of the bolts take a 5mm hex key.

Likes: This is a handsome and lightweight stem available in lots of finishes, angles and lengths. It is plenty stiff, and it has a large clamping area with the bar (these two features are probably interrelated).

Dislikes: None.

Test dates: March and April, 2002

Conditions: Mountain bike riding in Boulder and Moab

Weight: 95mm, 15 degrees: 198 grams
110mm, 7 degrees: 214 grams
130mm, 7 degrees; 236 grams

Price: $40Contact: Koski Engineering, 475 Miller Ave., Mill Valley, CA94941; 415/389-6090; Web: www.koskiengineering.com