Stock fork springs are too soft for riders heavier than 70kg. Upgrading springs is the best bang-for-buck suspension improvement.
Stock Spring Rate
0.36 kg/mm - adequate for ~70kg (155lb) rider, too soft for anyone heavier.
Recommended Rates
| Rider Weight | Recommended Rate |
|---|---|
| 70kg / 155lb | 0.36 kg/mm (stock) |
| 80kg / 176lb | 0.42 kg/mm |
| 90kg / 200lb | 0.48 kg/mm |
| 100kg / 220lb | 0.52 kg/mm |
Use RaceTech's spring calculator for a precise recommendation based on your weight and riding style.
Budget Option: Yamaha Tenere 700 Spring
You don't need expensive aftermarket springs. A single Yamaha Tenere 700 fork spring fits:
- Part number: BW3-23141-00
- Cost: ~$30
- Rate: 0.48 kg/mm (perfect for 90kg rider)
Hybrid Spring Setup
For a 90kg rider, you can run:
- One Tenere 700 spring (0.48 kg/mm)
- One stock spring (0.36 kg/mm)
- Combined rate: ~0.42 kg/mm
Or run two Tenere springs for 0.48 kg/mm.
Installation
Total Cost
Under $30 for the spring upgrade if you use the OEM Yamaha option.
Compare to:
- Race Tech springs: ~$120
- Ohlins springs: ~$150
Related
- Suspension Guide - Overview and sag setup
- Shock Upgrades - Don't forget the rear
- Suspension Setup - Dial in damping after spring upgrade