The KLX250/300 suspension is adequate for casual riding but has limitations for aggressive off-road use or heavier riders.
Stock Suspension Specs
| Component | Travel | Spring Rate |
|---|---|---|
| Front Fork | 255mm | 0.36 kg/mm |
| Rear Shock | 230mm | 5.6 kg/mm |
The Problem
Stock springs are too soft for riders over 70kg (155 lbs). This leads to:
- Bottoming out on jumps
- Wallowy handling
- Fork dive under braking
- Rear squat under acceleration
Quick Fixes
Sag Adjustment
Setting sag correctly is free and makes a big difference. See Suspension Setup for the full procedure.
- Static sag: 25-35mm
- Rider sag: 95-105mm
Spring Upgrades
For heavier riders or aggressive riding, stiffer springs transform the bike.
| Rider Weight | Fork Rate | Shock Rate |
|---|---|---|
| 70kg / 155lb | 0.36 kg/mm (stock) | 5.6 kg/mm (stock) |
| 85kg / 187lb | 0.44 kg/mm | 6.4 kg/mm |
| 95kg / 210lb | 0.48 kg/mm | 7.0 kg/mm |
Cost: Under $60 for both springs if you buy used/OEM alternatives.
Detailed Guides
| Topic | Description |
|---|---|
| Suspension Setup | Sag adjustment and damping settings |
| Fork Upgrades | Spring replacement and valving |
| Shock Upgrades | Spring and valving for the rear |
OEM Spring Alternatives
You don't need expensive Race Tech springs. Compatible OEM springs from other models work great:
- Fork: Yamaha Tenere 700 spring (BW3-23141-00) - ~$30
- Shock: Check RaceTech's product search for rate, then find on eBay
Next Steps
- Measure your current sag
- Determine if springs are the issue
- Upgrade springs if needed (biggest bang for buck)
- Fine-tune damping