Light weight aliminium frame, ridged back, suspension on front, disk brakes as standard and brand new, also brand new on the bike: Brake calipers Brake levers and cables Rear derailleur and rear grip shift Brand new tyres which were 30 pounds to replace The whole bike has had quite a bit spent on it to keep it up to standard, very enjoyable to ride with smooth changing gears and also comfortable. Overall condition is nearly comparable to a brand new bike, only the seat post is a bit rusty but easily rectified by treatment or replacing, The rest of the bike is clean and rides like new. free rear chargable