This is a rock shox SID Race Dual Air suspension fork. It has a 1-1/8 Steerer Tube which is just over 18cm long.
This is for a standard hub with 100mm of spacing and cantilever brakes. The base plate is chris king.
The item "Rock Shox SID Race Vintage suspension MTB Fork Dual Air 26 / 1-1/8 Steerer" is in sale since Monday, March 19, 2018. This item is in the category "Sporting Goods\Cycling\Bicycle Components & Parts\Forks". The seller is "amazingfindslosangeles" and is located in Agoura Hills, California. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, Sweden, South Korea, Indonesia, Taiwan, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Russian federation, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Kuwait, Croatia, Malaysia.