1977 - 1984
YAMAHA XS 400
Black shock springs for dual shocks
| PROGRESSIVE SUSPENSION
Fits to:
YAMAHA XS 400 Dohc [1983 - 1984
YAMAHA XS 400 Dohc [1982 - 1984
YAMAHA XS 400 R Seca [1982 - 1983
YAMAHA XS 400 S Heritage [1980 - 1982
YAMAHA XS 400 [1977 - 1983
YAMAHA XS 400 Maxim [1982 - 1983]
YAMAHA XS 400 [1978 - 1981]
YAMAHA XS 400 Special 2 [1980 - 1980]
YAMAHA XS 400 II [1978 - 1979]
Specifications
| Manufacturer | PROGRESSIVE SUSPENSION |
|---|---|
| Type | Fits 12.50", 13.00", 13.50" and 14.25" Shock |
| Color/finish | Black |
| Length | 248,00 mm (9,75") |
| Model | 12 Series |
| Units | Pair |
| Mounting position | Rear |
| Duty | Standard |
| Spring type | Single Progressive Rate |
| Progressive spring rate | 1,34 kg/mm - 2,14 kg/mm (75 lb/in - 120 lb/in) |
Product description
12 series shocks are gas-charged for superior, fade-free damping and consistent operation Six-stage, automatic damping designed with a special anti-topping function Double-wall shock body construction for piston protection and long life Standard spring is recommended for bike as sold new, excluding any accessories, rider weight under 200 lb. and passenger use limited to under 50% of the time. Heavy-duty spring is recommended for riders over 200 lb., passenger usage over 50% of the time and/or add-on accessories of considerable weight. These springs must be ordered when ordering 12-series shocks. However, they can be used as replacements for the 412-series shocks