Super Sherpa Fork Spring Rates

Details and dimensions on the front suspension components on my North American Model Year 2002 Kawasaki KL250 (Super Sherpa).

Fork Details and Dimensions:

• Front Travel - 9.1" (230 mm)
• Fork Type - Dampening Rod
• Inner Fork Tube Diameter - 1.42" (36 mm)
• Fork Air Pressure - Atmospheric +/- 0 psi
• Fork Oil - 10w, 10.14 oz each per change, 11.93 oz each per disassembly
• Fork Preload Adjustment - None
• Fork Compression Dampening - None
• Fork Rebound Dampening - None
• Spring Length - 573 mm (Service Limit 566 mm)
• Spring Length, My 2002 Model Year, 7,000 miles - 22.5" (571 mm)
• Spring Outer Diameter - 28 mm
• Spring Inner Diameter - 24 mm
• Spring Thickness/Gauge - 4 mm
• Spring Number of Coils- 43
• Spring Rate - Unknown

I am currently running 1 inch spacers on the front forks to compensate for the lack of preload adjustment. 

I recently replaced the seals and wipers with an All Balls Kit P/N No. 56-120. At that time, and after several hundred miles, I replaced the fork oil with Maxima 20w Fork Oil. I had been running a 10w mineral oil.