Bicycle Trinx 20" Junior 3.0 in new condition. Model: Junior 3.0. Lightweight aluminum frame 20"x11" with special tubes. Trinx fork with 30 mm shock absorption. Rear derailleur Shimano Ty21. The bike has a 7-speed Trinx Hi-Ten Steel 14-28T cassette. Brake system X-Spark with aluminum discs. Professional Trinx wheels and tires measuring 20"x2.125". KMC chain and sprocket Trinx 1/2*3/32"*40T*152L. Comfortable seat and handlebars from Trinx. Manufacturer: Trinx. Electric: no.