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Front Fork Springs (Kit)
The optional front fork springs are available for racing.
1) Front Fork Specifications
Items Original
Rebounded damping setting (Upper) 1 1/2 turns out from the fully clockwise position
Compression damping setting (Lower) 1 1/2 turns out from the fully clockwise position
Fork oil SHOWA SS47
Fork oil level 97 mm
Oil lock Oil lock piece
Oil seal – – –
Spring length 257.0 mm (Free Length)
Spring constant 9.0 N/mm
Sub spring stroke 28 mm
2) Front Fork Spring
P/No. A × B × C (mm) Number of Winding Spring Constant
Original 4.7 × 31.5 × 257.0 17.5 K = 9.0 N/mm
92145-0507 4.6 × 31.6 × 257.0 16.9 K = 8.25 N/mm
92145-0508 4.7 × 31.5 × 257.0 16.6 K = 9.25 N/mm
92145-0509 4.8 × 31.4 × 257.0 17.3 K = 9.75 N/mm
A: Coil Diameter
B: Spring Inside Diameter
C: Spring Free Length
3) Front Fork Spring Replacement
Replace the main spring referring to the Fork Oil Change section of the base Service
Manual.
Identification Mark
The spring constant value is stamped on the one side surface of the spring.
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