The stock shock spring at 5.6 kg/mm is too soft even for a 70kg rider. Upgrading transforms rear-end feel.
Stock Spring Rate
5.6 kg/mm - too soft for most adult riders.
Finding Your Rate
Use RaceTech's product search to find the right spring rate for:
- Your weight (in gear)
- Type of riding (trail, dual-sport, aggressive)
Recommended Rates
| Rider Weight | Recommended Rate |
|---|---|
| 70kg / 155lb | 6.0-6.2 kg/mm |
| 80kg / 176lb | 6.4-6.6 kg/mm |
| 90kg / 200lb | 6.8-7.0 kg/mm |
| 100kg / 220lb | 7.2-7.5 kg/mm |
Budget Tip
Once you know your rate from RaceTech:
- Search eBay for that rate spring
- Look for take-offs from other models
- Often 50-70% cheaper than new Race Tech
Installation
The shock spring can be changed with basic tools:
Cost
- OEM take-off spring: $20-40 on eBay
- Race Tech new: $100-120
After Spring Upgrade
- Reset sag - see Suspension Setup
- Adjust preload to achieve target sag
- Fine-tune rebound damping
Combined with Fork Springs
For best results, upgrade both ends together:
| Component | Stock | Upgrade Cost |
|---|---|---|
| Fork springs | 0.36 kg/mm | ~$30 |
| Shock spring | 5.6 kg/mm | ~$30 |
| Total | ~$60 |
Both ends properly set up for under $60 - the best suspension value available.
Related
- Suspension Guide - Overview and setup principles
- Fork Upgrades - Match the front to the rear
- Suspension Setup - Sag and damping adjustment