Description
Precision suspension setup is non-negotiable when you’re chasing lap times or dialing in handling characteristics. The Coleman Rod Ruler 21790 eliminates guesswork by providing a reliable method to measure and adjust suspension tube lengths with accuracy. Whether you’re building a race car from the ground up or fine-tuning an existing setup, this kit gives you the repeatability and confidence needed for consistent performance.
- Suspension tube measurement tool
- Aluminum construction
- 5/16″ to 3/4″ rod end adapters
- Complete kit format
- Bolt-on installation
- Natural finish
- MPN: 21790








