# Restoring A Rare 90’s MTB You Can't Get Parts For

Source: https://www.youtube.com/watch?v=TgHBve0NNg8
Recap page: https://rapidrecap.app/video/TgHBve0NNg8
Generated: 2026-06-26T15:33:42.769+00:00

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## Quick Overview

This video details the successful restoration of a 1997 Slingshot mountain bike, a rare bicycle that lacks available replacement parts. The project focuses on replacing the critical and proprietary 'dogbone' link, which provides the bike's unique suspension system. After failing to source a replacement, the creator uses 3D printing and precision manufacturing services to create a custom, durable link, ultimately proving the bike's rideability on the trail.

**Key Points:**
- The 1997 Slingshot mountain bike relies on a proprietary 'dogbone' link made of G10 Garolite for its suspension system.
- The creator successfully restores the bike by 3D printing and manufacturing a custom, high-strength replacement dogbone link after finding the original was no longer available.
- Initial attempts to remove the old, stuck link involved heating, penetrating oil, and using a chain as a slide hammer, which damaged the workbench.
- A 3D-printed plastic prototype served as a temporary stand-in to hold the frame together while the final, durable part was manufactured.
- The restoration process required extensive cleaning and servicing of the 30-year-old elastomer suspension fork.
- The final, custom-made dogbone link successfully allows for a smooth, functional ride on the trail, proving the bike's viability as a collector's item.

![Screenshot at 00:07: The 1997 Slingshot mountain bike, highlighting the unique dogbone link and steel cable suspension system.](https://ss.rapidrecap.app/screens/TgHBve0NNg8/00-00-07.jpg)

**Context:** The Slingshot mountain bike is a unique vintage bicycle from the 1990s that replaces the traditional down tube with a steel cable and spring system, paired with a flexible 'dogbone' link made of G10 Garolite. This design provides a unique suspension feel but creates a significant maintenance challenge because replacement links are no longer manufactured, forcing owners to find creative, custom solutions to keep these bikes in rideable condition.

## Detailed Analysis

The restoration of this vintage Slingshot bike serves as both a technical challenge and a case study in preserving obsolete cycling technology. The primary obstacle was the proprietary dogbone link, a critical component that acts as the bike's flexible suspension pivot. When the original link failed, the creator was forced to reverse-engineer the part. This involved precise measurement and 3D modeling, which were then used to commission a custom part from a professional CNC machining service. The project also highlights the difficulty of maintaining 30-year-old suspension components, specifically the elastomer fork, which required careful disassembly and lubrication. Through persistence, the creator successfully restored the bike to a fully functional, rideable state, demonstrating that even rare, discontinued equipment can be kept alive through modern manufacturing techniques like 3D printing and CNC machining.

### Restoration Challenges

- Locating a discontinued dogbone link
- Removing a seized, 30-year-old component from the frame
- Servicing an obsolete elastomer suspension fork

### Technical Solutions

- Reverse-engineering the dogbone link with 3D modeling
- Commissioning a custom CNC-machined replacement part
- Utilizing 3D-printed prototypes for temporary frame alignment

### Final Assembly and Results

- Rebuilding the bike with period-correct parts
- Successfully testing the bike on local trails
- Proving the rideability of the custom-manufactured suspension system

![Screenshot at 00:16: Close-up of the original, damaged G10 Garolite dogbone link](https://ss.rapidrecap.app/screens/TgHBve0NNg8/00-00-16.jpg)
![Screenshot at 03:41: Screenshot of the online CNC machining quote for the custom part](https://ss.rapidrecap.app/screens/TgHBve0NNg8/00-03-41.jpg)
![Screenshot at 16:03: Comparison between the original, worn-out link and the new, custom-manufactured replacement](https://ss.rapidrecap.app/screens/TgHBve0NNg8/00-16-03.jpg)
![Screenshot at 19:54: POV shot of the restored bike being successfully ridden on a mountain bike trail](https://ss.rapidrecap.app/screens/TgHBve0NNg8/00-19-54.jpg)