S-Works Specialized Stumpjumper FSR All suspension works is it should, including the extra Fox brain that is the appropriate model year rear shock for this frame, so you have a spare brain! The Brain is automatic lockout that can tell the difference between rider input (inefficient Bob) vs. terrain input. 19 inch large frame fits someone around 6 ft tall give or take. 26-in Wheels. 27 speed SRAM XO componentry with Shimano XTR cranks. Shifts excellent. Shimano hydraulic disc brakes works as they should. Good tubes and tires with plenty of tread and hold air. This bike is tuned up and ready to ride, go race the trails or have a fun XC all mountain bike!