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Your cart is empty.Two flywheels in one bikeShift flywheel and single speed flywheel are compatible and interchangeable, having one more choice can release more potential.Installation mode 1: traditional variable speed flywheel, can be adapted to a variety of complex road surfaces.Installation mode 2: single-speed flywheel, simple, lightweight, good maintenance, more suitable for dirt street bike flywheel.Product ParameterProduct Name:Bike Hardtail FrameColor:Black/Purple/Green/Orange/TitaniumMaterial:Aluminum AlloyHead Tube Length:118mmHead Tube:44-56mm(Can Be Equipped with Taper/Straight Tube Fork)Seatpost I.D.:30.9mmSeatpost Clamp: 34.9mmBottom Bracket:73mm Thread(Bc1.37 “x24t L73mm)Rear Wheel Opening Gear:Thru Axle 12*148mmChain Guide:ISCG 05Wire: Internal AlignmentBrakes: Direct Mount Disc BrakesWheelset: 26", Supports up to 2.6 Wide TiresTail Hook: Straight Axle Tail Hook with Teeth PatternBoost Size:26*310mmWeight: About 2250gFeatures:High-Strength Aluminum Alloy/Fish Scale Welding/Competition-Grade Frame/Hidden Internal Alignment/Thru Axle/Metallic Feeling Baking PaintPackage:1* Bike Frame Note:-Please allow slight dimensional tolerances due to manual measurements, lighting in photography may cause color differences from real life.-Please double check the size details in our list according to your actual situation to make sure you buy the right bike frame.Service:-If you encounter any problems before or after purchase or during installation, please contact us for a satisfactory solution and we will do our best to provide our customers with the most sincere service!