Genetic

Stem Shim 1 1/8" to 1"

The Genetic Stem Shim 1 1/8" to 1" is a simple yet essential solution for riders looking to mix and match fork and stem sizes without compromising performance or safety. Crafted from durable alloy and standing 38mm tall, this shim allows a seamless fit between a 1" threadless fork and a 1 1/8" stem—perfect for restoring a classic frame or fine-tuning a custom build.

This adapter ensures a secure, precise interface between components, eliminating the need for a full fork or stem replacement. It’s the kind of small part that makes a big difference in keeping your cockpit dialed and your ride feeling solid.

Key Features:

• Size Conversion: Adapts a 1" threadless fork to fit a 1 1/8" stem.
• Durable Alloy Construction: Lightweight, strong, and corrosion resistant.
• 38mm Height: Provides a stable and secure clamping surface.
• Easy Upgrade: Ideal for retrofits, restorations, or custom bike builds.

Whether updating a vintage road bike or experimenting with modern cockpit options, the Genetic Stem Shim delivers reliable fit and finish for riders who value precision and performance.