Specification BikeType : City Bike Brand : Alta BulletPoint : Steel Seatpost BulletPoint1 : Ultralight Carbon Fiber: Made of full 3K T800 carbon fiber -- as known as "black gold" in the industry, Light weight, never rust. BulletPoint2 : Size: Φ27.2 × 350mm (apx. 220g/pc), Total length: 350mm, Tube Length: 325mm, Head Length: 25mm. Strength: maxium of 220lbs ; Setback: 0mm. Adjust tube length of 0 to 320mm. BulletPoint3 : How to Choose Yours: You need to either check your INTERNAL diameter or check the specs on your original seat tube or bike. BulletPoint4 : Adjustable Seat Angle: The seat angle is controlled by how the bolts are tensioned. You can probably get a pretty steep angle by loosing the rear bolt and tightening the front bolt. The recommended maximum torgue force would be 7 Nm, or else the cracks may occur. BulletPoint5 : Wide Application: Suitable for most mountain bikes, road bikes, fixed gear bicycle, downhill bikes, track bikes, MTB, BMX, DH, etc. Color : Black ExternallyAssignedProductIdentifier1 : 0811472037452 ExternallyAssignedProductIdentifier2 : 811472037452 ExternallyAssignedProductIdentifier3 : 00812719026093 GpsrSafetyAttestation : 1 ImportDesignation : Imported IncludedComponents : Screw, pad, tube ItemDisplayDimensions_Height : 3 centimeters ItemDisplayDimensions_Length : 12 centimeters ItemDisplayDimensions_Width : 5 centimeters ItemName : Alta Steel Lay Back Bike Seat Post with Support, Multiple Sizes & Colors (Black, 25.4mm) ItemPackageDimensions_Height : 39.5986 centimeters ItemPackageDimensions_Length : 5.4102 centimeters ItemPackageDimensions_Width : 9.4996 centimeters ItemPackageQuantity : 1 ItemShape : Round ItemTypeKeyword : bike-seat-posts-and-parts Manufacturer : F & R Cycle Material : Alloy Steel ModelName : TPardzg-05 ModelNumber : TPardzg-05 NumberOfItems : 1 PartNumber : 228933-228953 ProductDescription : Ultralight Carbon Fiber: Made of full 3K T800 carbon fiber -- as known as "black gold" in the industry, Light weight, never rust. ProductSiteLaunchDate : 2018-04-02T21:00:00.000Z Size : 25.4mm Style : Remote Light Action Dropper Lever for Sram Matchmaker X SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredDgHzRegulation1 : not_applicable SupplierDeclaredDgHzRegulation2 : not_applicable SupplierDeclaredDgHzRegulation3 : not_applicable SupplierDeclaredDgHzRegulation4 : not_applicable SupplierDeclaredDgHzRegulation5 : not_applicable TeamName : Black 25.4mm UnitCount : 1 UnspscCode : 25170000 WarrantyDescription : 1 Year