http://www.ridejbi.com/sdi-elite-fork-free-piston-showa/

SDI Elite Fork Free Piston
Showa SFF 48mm Spring Fork
Showa SFF 49mm TAC Air Fork
Showa 49mm Twin Chamber Spring Fork

• Designed for improved strength
  • Stock plastic unit commonly cracks & breaks
  • Must have for high demanding riders
• Smoother body design
• Puts positive pressure on cartridge damper rod at full extension
• Best replacement option for the broken plastic OEM units
• Comes assembled and ready to install with:
  • Aluminum piston body
  • Piston shaft seal
  • Top and bottom bushings
  • O-Ring and backup ring
• Available for Honda CRF250R, CRF450R, CRF450RX, Kawasaki KX250F KX450F, Suzuki RMZ250 RMZ450 models
• Let Ride JBI Suspension Services install it for you
• Showa SFF (Separate Function fork) coil spring and air fork models are sold as 1 free piston
• Showa twin chamber 49mm spring fork models sold as set