Kawasaki KX80, 1986-1987 Shock Absorber Springs (3 Options):
| # | Description |
| 92144A | SPRING-SHOCK ABSORBER L=260mm, K=5.5kg/mm |
| 92144B | SPRING-SHOCK ABSORBER L=260mm, K=6.0kg/mm |
| 92144C | SPRING-SHOCK ABSORBER L=260mm, K=6.5kg/mm |
As for most 80cc motocross machines of the 1980s, the KX80 was designed to suit the median age, weight and height characteristics for the relevant class (boys 9-16 years of age) and median weights of 40kg/90lb (Small Wheel) and 50kg/110lb (Big Wheel). Nonetheless, we got to work and engineered stiffer springs for the guys that still ride them.
Kawasaki listed the stock spring rate at 4.2 kg/mm (4.6 kg/mm for Big Wheel model). Our testing indicates that these spring rates are good (with some additional preload and less than optimal Static Sag*) for up to 70kg/150lb. So we engineered three spring rates to choose from: 5.5, 6.0 & 6.5 kg/mm that will suit riders from 70kg (150lb) and up depending on your riding style, age, skill level and the type of riding you will be doing. Use the following table as a guide to your spring selection:
| 75kg/ 165lb | 80kg/ 175lb | 85kg/ 185lb | 90kg/ 200lb | 95kg/ 210lb | |
| SW/Novice | 5.5 | 5.5 | 6.0 | 6.0 | 6.0 |
| SW/Expert | 5.5 | 5.5 | 6.0 | 6.0 | 6.5 |
| BW/Novice | 5.5 | 6.0 | 6.0 | 6.0 | 6.5 |
| BW/Expert | 6.0 | 6.0 | 6.0 | 6.5 | 6.5 |
SW=Small Wheel, BW=Big Wheel
Each spring has been blasted, zinc-primed and powder-coated in original matt-silver. All springs suit a 35mm KYB shock absorber. May suit other shock absorber brands & models but may require custom spring seats.
* Refer to OEM's blog "All about Sag" for how to measure and set your Sag and recommended Sag settings for your bike.