Wishbone Stem (quill)
Patented by Dr Alex Moulton in 1987, the Wishbone Stem is one of the most distinctive components in modern bicycle design. Engineered to complement the open architecture of the Moulton frame, it combines precise steering control with elegant mechanical simplicity.
Crafted from Reynolds steel and finished in polished chrome, the Wishbone stem is both lightweight and exceptionally strong. Its unique twin-arm configuration provides indexed angle adjustment, allowing riders to fine-tune position with remarkable accuracy. From upright comfort to a low, aerodynamic stance, the riding position can be altered quickly using a standard 6mm Allen key.
Unlike a conventional stem, the Wishbone’s centre section is reversible, enabling further adjustment of effective reach. In addition, the adjustable arms allow the handlebars to be rotated in line with the frame, significantly reducing the bike’s pack size for transport or storage.
The Wishbone Quill stem represents patented British engineering at its most practical - adaptable, elegant and unmistakably Moulton.
Key Features
- Steerer Type: 1” threaded (quill fitment)
- Handlebar Clamp Diameter: 26.0mm
- Material: Reynolds 725 heat-treated steel
- Finish: Chrome plated
- Adjustment: Indexed angle adjustment via serrated clamp system
- Reach Adjustment: Reversible centre section
- Arm Length Options: 100mm / 150mm / 170mm
- Pack Function: Rotates in line with frame for reduced storage size
- Tool Requirement: 6mm Allen key
Compatibility
- Suitable only for frames with a threaded steering column. For current models this includes: AM GT, NS Marathon (stainless), NS D-pylon.
- Requires handlebars with a minimum 120mm parallel 26.0mm centre section
- Unsuitable for carbon handlebars
Height Adjustment
Height is adjusted in the traditional quill manner by loosening the expander bolt. Do not exceed the engraved minimum insertion mark.
The current production lead time for the Wishbone Stem (quill) is:
Frequently Asked Questions
Each accessory lists its compatible Moulton models below the product description. If your Moulton was manufactured before 2010, please contact us to confirm compatibility before ordering.
Custom colours are available for selected non-stainless accessories. Where applicable, both standard and custom colour options will be displayed below the product description, allowing you to select your preferred paint finish.
We carry limited stock of our accessories, as they are typically manufactured in small batches and, in some cases, made to order. Stainless steel racks in particular may have longer lead times due to demand and the fabrication process. If you require the most up-to-date availability or have a specific deadline, we recommend contacting us directly before placing your order.